Func đầu tiên của bạn là gần như đúng. Chỉ cần xóa cờ 'G' là viết tắt của 'Toàn cầu' (chỉnh sửa) và cho nó một số bối cảnh để phát hiện ra 'R' thứ hai. EDIT: Không thấy đó là 'r' thứ hai trước đó đã thêm '/'. Cần \/ để thoát '/' khi sử dụng regex arg. Cảm ơn vì các upvote nhưng tôi đã sai nên tôi sẽ sửa và thêm chi tiết cho những người quan tâm đến việc hiểu những điều cơ bản của regex tốt hơn nhưng điều này sẽ hoạt động: mystring.replace(/\/r/, '/')
Bây giờ để giải thích quá mức: Khi đọc/viết một mẫu regex, hãy nghĩ về: tiếp theo là tiếp theo là Trong Regex có thể là một lần: /each char in this pattern/
Vì vậy, đọc như E, theo sau là A, tiếp theo là C, v.v. Hoặc một đơn lẻ có thể là các ký tự được mô tả bởi một lớp ký tự: /[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
Hoặc mở rộng để phù hợp với một lượng ký tự (nhưng vẫn tốt nhất để nghĩ như một yếu tố duy nhất theo mẫu tuần tự): /a{2}/
//precisely two 'a' chars - matches identically as /aa/ would
/[aA]{1,3}/
//1-3 matches of 'a' or 'A'
/[a-zA-Z]+/
//one or more matches of any letter in the alphabet upper and lower
//'-' denotes a sequence in a character class
/[0-9]*/
//0 to any number of matches of any decimal character (/\d*/ would also work)
Vì vậy, một loạt các nhóm lại với nhau: var rePattern = /[aA]{4,8}(Eat at Joes|Joes all you can eat)[0-5]+/g
var joesStr = 'aaaAAAaaEat at Joes123454321 or maybe aAaAJoes all you can eat098765';
joesStr.match(rePattern);
//returns ["aaaAAAaaEat at Joes123454321", "aAaAJoes all you can eat0"]
//without the 'g' after the closing '/' it would just stop at the first match and return:
//["aaaAAAaaEat at Joes123454321"]
Và tất nhiên tôi đã bị loại bỏ quá mức nhưng quan điểm của tôi chỉ đơn giản là: /cat/
là một loạt các yếu tố 3 mẫu (một điều tiếp theo là một điều tiếp theo là một điều). Và đây là: /[aA]{4,8}(Eat at Joes|Joes all you can eat)[0-5]+/
Một cách kỳ quặc khi Regex bắt đầu trông giống nhau, tất cả đều bị phá vỡ thành một loạt các thứ (có khả năng đa nhân vật) theo dõi nhau một cách tuần tự. Một điểm cơ bản nhưng một điểm đã mất một thời gian để vượt qua nên tôi đã vượt qua việc giải thích nó ở đây vì tôi nghĩ đó là một điều giúp OP và những người khác mới hiểu được Regex hiểu những gì đang xảy ra. Chìa khóa để đọc/viết Regex là chia nó thành những tác phẩm đó. Phương pháp 1: Sử dụng phương thức thay thế (): Phương thức thay thế được sử dụng để thay thế một ký tự/chuỗi cụ thể bằng ký tự/chuỗi khác. Phải mất hai tham số, đầu tiên là chuỗi được thay thế và thứ hai là chuỗi sẽ được thay thế bằng. Làm cách nào để loại bỏ các ký tự không mong muốn khỏi chuỗi?replace() method: The replace method is used to replace a specific character/string with other character/string. It takes two parameters, first is the string to be replaced and the second is the string which is to be replaced with. In this case, the first
parameter is the character which is to be removed and the second parameter can be given as an empty string. This will remove the character from the string. This method removes the first occurrence of the string. Syntax: string.replace('characterToReplace', '');Example: HTML/each char in this pattern/
1/each char in this pattern/
2/each char in this pattern/
3/each char in this pattern/
4/each char in this pattern/
2/each char in this pattern/
6/each char in this pattern/
4/each char in this pattern/
8/each char in this pattern/
2/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
0/each char in this pattern/
4/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
2/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
3/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
2/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
5
/each char in this pattern/
8/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
7/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
0/each char in this pattern/
4/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
7/each char in this pattern/
6/each char in this pattern/
4/each char in this pattern/
2/a{2}/
//precisely two 'a' chars - matches identically as /aa/ would
/[aA]{1,3}/
//1-3 matches of 'a' or 'A'
/[a-zA-Z]+/
//one or more matches of any letter in the alphabet upper and lower
//'-' denotes a sequence in a character class
/[0-9]*/
//0 to any number of matches of any decimal character (/\d*/ would also work)
4/each char in this pattern/
4/each char in this pattern/
8/each char in this pattern/
2/a{2}/
//precisely two 'a' chars - matches identically as /aa/ would
/[aA]{1,3}/
//1-3 matches of 'a' or 'A'
/[a-zA-Z]+/
//one or more matches of any letter in the alphabet upper and lower
//'-' denotes a sequence in a character class
/[0-9]*/
//0 to any number of matches of any decimal character (/\d*/ would also work)
8 /a{2}/
//precisely two 'a' chars - matches identically as /aa/ would
/[aA]{1,3}/
//1-3 matches of 'a' or 'A'
/[a-zA-Z]+/
//one or more matches of any letter in the alphabet upper and lower
//'-' denotes a sequence in a character class
/[0-9]*/
//0 to any number of matches of any decimal character (/\d*/ would also work)
9/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
2 var rePattern = /[aA]{4,8}(Eat at Joes|Joes all you can eat)[0-5]+/g
var joesStr = 'aaaAAAaaEat at Joes123454321 or maybe aAaAJoes all you can eat098765';
joesStr.match(rePattern);
//returns ["aaaAAAaaEat at Joes123454321", "aAaAJoes all you can eat0"]
//without the 'g' after the closing '/' it would just stop at the first match and return:
//["aaaAAAaaEat at Joes123454321"]
1/each char in this pattern/
8/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
7/a{2}/
//precisely two 'a' chars - matches identically as /aa/ would
/[aA]{1,3}/
//1-3 matches of 'a' or 'A'
/[a-zA-Z]+/
//one or more matches of any letter in the alphabet upper and lower
//'-' denotes a sequence in a character class
/[0-9]*/
//0 to any number of matches of any decimal character (/\d*/ would also work)
8/each char in this pattern/
4/each char in this pattern/
8/each char in this pattern/
2 var rePattern = /[aA]{4,8}(Eat at Joes|Joes all you can eat)[0-5]+/g
var joesStr = 'aaaAAAaaEat at Joes123454321 or maybe aAaAJoes all you can eat098765';
joesStr.match(rePattern);
//returns ["aaaAAAaaEat at Joes123454321", "aAaAJoes all you can eat0"]
//without the 'g' after the closing '/' it would just stop at the first match and return:
//["aaaAAAaaEat at Joes123454321"]
8/each char in this pattern/
4/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
2/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
3/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
2/cat/
3/each char in this pattern/
8/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
7 var rePattern = /[aA]{4,8}(Eat at Joes|Joes all you can eat)[0-5]+/g
var joesStr = 'aaaAAAaaEat at Joes123454321 or maybe aAaAJoes all you can eat098765';
joesStr.match(rePattern);
//returns ["aaaAAAaaEat at Joes123454321", "aAaAJoes all you can eat0"]
//without the 'g' after the closing '/' it would just stop at the first match and return:
//["aaaAAAaaEat at Joes123454321"]
8/each char in this pattern/
4/each char in this pattern/
8/each char in this pattern/
2/[aA]{4,8}(Eat at Joes|Joes all you can eat)[0-5]+/
0/[aA]{4,8}(Eat at Joes|Joes all you can eat)[0-5]+/
1/[aA]{4,8}(Eat at Joes|Joes all you can eat)[0-5]+/
0/each char in this pattern/
4/each char in this pattern/
8/each char in this pattern/
2/[aA]{4,8}(Eat at Joes|Joes all you can eat)[0-5]+/
0/each char in this pattern/
4/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
2/[aA]{4,8}(Eat at Joes|Joes all you can eat)[0-5]+/
9/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
2/each char in this pattern/
2string.replace('characterToReplace', '');2 string.replace('characterToReplace', '');3string.replace('characterToReplace', '');2/each char in this pattern/
4
/each char in this pattern/
8/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
7/[aA]{4,8}(Eat at Joes|Joes all you can eat)[0-5]+/
0/each char in this pattern/
4/each char in this pattern/
8/each char in this pattern/
2string.replace(/regExp/g, ''); 2 string.replace(/regExp/g, ''); 3/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
2string.replace(/regExp/g, ''); 5/each char in this pattern/
8/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
7string.replace(/regExp/g, ''); 2/each char in this pattern/
4/each char in this pattern/
8/each char in this pattern/
2// Removing the first character
string.slice(1);
// Removing the last character
string.slice(0, string.length - 1); 2 // Removing the first character
string.slice(1);
// Removing the last character
string.slice(0, string.length - 1); 3/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
2// Removing the first character
string.slice(1);
// Removing the last character
string.slice(0, string.length - 1); 5// Removing the first character
string.slice(1);
// Removing the last character
string.slice(0, string.length - 1); 6// Removing the first character
string.slice(1);
// Removing the last character
string.slice(0, string.length - 1); 7// Removing the first character
string.slice(1);
// Removing the last character
string.slice(0, string.length - 1); 6// Removing the first character
string.slice(1);
// Removing the last character
string.slice(0, string.length - 1); 9// Removing the first character
string.slice(1);
// Removing the last character
string.slice(0, string.length - 1); 6/each char in this pattern/
01/each char in this pattern/
02/each char in this pattern/
03/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
2/each char in this pattern/
05/each char in this pattern/
8/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
7// Removing the first character
string.slice(1);
// Removing the last character
string.slice(0, string.length - 1); 2/each char in this pattern/
4/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
7/a{2}/
//precisely two 'a' chars - matches identically as /aa/ would
/[aA]{1,3}/
//1-3 matches of 'a' or 'A'
/[a-zA-Z]+/
//one or more matches of any letter in the alphabet upper and lower
//'-' denotes a sequence in a character class
/[0-9]*/
//0 to any number of matches of any decimal character (/\d*/ would also work)
4/each char in this pattern/
4/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
7/each char in this pattern/
3/each char in this pattern/
15Output: Phương pháp 2: Sử dụng phương thức thay thế () với biểu thức chính quy: Phương thức này được sử dụng để loại bỏ tất cả các lần xuất hiện của ký tự được chỉ định, không giống như phương thức trước đó. Một biểu thức thông thường được sử dụng thay vì chuỗi cùng với thuộc tính toàn cầu. Nó sẽ chọn mọi lần xuất hiện trong chuỗi và nó có thể được xóa. & NBSP; This method is used to remove all occurrences of the specified character,
unlike the previous method. A regular expression is used instead of the string along with the global property. It will select every occurrence in the string and it can be removed. Syntax: string.replace(/regExp/g, ''); Example: HTML/each char in this pattern/
1/each char in this pattern/
2/each char in this pattern/
3/each char in this pattern/
4/each char in this pattern/
2/each char in this pattern/
6/each char in this pattern/
4/each char in this pattern/
8/each char in this pattern/
2/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
0/each char in this pattern/
4/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
2/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
3/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
2/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
5/each char in this pattern/
8/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
7/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
0/each char in this pattern/
4/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
7/each char in this pattern/
6/each char in this pattern/
4/each char in this pattern/
2/a{2}/
//precisely two 'a' chars - matches identically as /aa/ would
/[aA]{1,3}/
//1-3 matches of 'a' or 'A'
/[a-zA-Z]+/
//one or more matches of any letter in the alphabet upper and lower
//'-' denotes a sequence in a character class
/[0-9]*/
//0 to any number of matches of any decimal character (/\d*/ would also work)
4/each char in this pattern/
4/each char in this pattern/
8/each char in this pattern/
2/a{2}/
//precisely two 'a' chars - matches identically as /aa/ would
/[aA]{1,3}/
//1-3 matches of 'a' or 'A'
/[a-zA-Z]+/
//one or more matches of any letter in the alphabet upper and lower
//'-' denotes a sequence in a character class
/[0-9]*/
//0 to any number of matches of any decimal character (/\d*/ would also work)
8 /a{2}/
//precisely two 'a' chars - matches identically as /aa/ would
/[aA]{1,3}/
//1-3 matches of 'a' or 'A'
/[a-zA-Z]+/
//one or more matches of any letter in the alphabet upper and lower
//'-' denotes a sequence in a character class
/[0-9]*/
//0 to any number of matches of any decimal character (/\d*/ would also work)
9/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
2 var rePattern = /[aA]{4,8}(Eat at Joes|Joes all you can eat)[0-5]+/g
var joesStr = 'aaaAAAaaEat at Joes123454321 or maybe aAaAJoes all you can eat098765';
joesStr.match(rePattern);
//returns ["aaaAAAaaEat at Joes123454321", "aAaAJoes all you can eat0"]
//without the 'g' after the closing '/' it would just stop at the first match and return:
//["aaaAAAaaEat at Joes123454321"]
1/each char in this pattern/
8/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
7/a{2}/
//precisely two 'a' chars - matches identically as /aa/ would
/[aA]{1,3}/
//1-3 matches of 'a' or 'A'
/[a-zA-Z]+/
//one or more matches of any letter in the alphabet upper and lower
//'-' denotes a sequence in a character class
/[0-9]*/
//0 to any number of matches of any decimal character (/\d*/ would also work)
8/each char in this pattern/
4/each char in this pattern/
8/each char in this pattern/
2 var rePattern = /[aA]{4,8}(Eat at Joes|Joes all you can eat)[0-5]+/g
var joesStr = 'aaaAAAaaEat at Joes123454321 or maybe aAaAJoes all you can eat098765';
joesStr.match(rePattern);
//returns ["aaaAAAaaEat at Joes123454321", "aAaAJoes all you can eat0"]
//without the 'g' after the closing '/' it would just stop at the first match and return:
//["aaaAAAaaEat at Joes123454321"]
8/each char in this pattern/
4/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
2/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
3/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
2/cat/
3/each char in this pattern/
8/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
7 var rePattern = /[aA]{4,8}(Eat at Joes|Joes all you can eat)[0-5]+/g
var joesStr = 'aaaAAAaaEat at Joes123454321 or maybe aAaAJoes all you can eat098765';
joesStr.match(rePattern);
//returns ["aaaAAAaaEat at Joes123454321", "aAaAJoes all you can eat0"]
//without the 'g' after the closing '/' it would just stop at the first match and return:
//["aaaAAAaaEat at Joes123454321"]
8/each char in this pattern/
4/each char in this pattern/
8/each char in this pattern/
2/[aA]{4,8}(Eat at Joes|Joes all you can eat)[0-5]+/
0/[aA]{4,8}(Eat at Joes|Joes all you can eat)[0-5]+/
1/[aA]{4,8}(Eat at Joes|Joes all you can eat)[0-5]+/
0/each char in this pattern/
4/each char in this pattern/
8/each char in this pattern/
2/[aA]{4,8}(Eat at Joes|Joes all you can eat)[0-5]+/
0/each char in this pattern/
4/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
2/[aA]{4,8}(Eat at Joes|Joes all you can eat)[0-5]+/
9/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
2/each char in this pattern/
2string.replace('characterToReplace', '');2 string.replace('characterToReplace', '');3string.replace('characterToReplace', '');2/each char in this pattern/
4/each char in this pattern/
8/each char in this pattern/
2string.replace(/regExp/g, ''); 2 string.replace(/regExp/g, ''); 3/each char in this pattern/
8/each char in this pattern/
2string.replace(/regExp/g, ''); 2 string.replace(/regExp/g, ''); 3/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
2string.replace(/regExp/g, ''); 5/each char in this pattern/
8/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
7string.replace(/regExp/g, ''); 2/each char in this pattern/
4/each char in this pattern/
8/each char in this pattern/
2// Removing the first character
string.slice(1);
// Removing the last character
string.slice(0, string.length - 1); 2 // Removing the first character
string.slice(1);
// Removing the last character
string.slice(0, string.length - 1); 3/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
2// Removing the first character
string.slice(1);
// Removing the last character
string.slice(0, string.length - 1); 5// Removing the first character
string.slice(1);
// Removing the last character
string.slice(0, string.length - 1); 6// Removing the first character
string.slice(1);
// Removing the last character
string.slice(0, string.length - 1); 7// Removing the first character
string.slice(1);
// Removing the last character
string.slice(0, string.length - 1); 6/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
04// Removing the first character
string.slice(1);
// Removing the last character
string.slice(0, string.length - 1); 6/each char in this pattern/
01/each char in this pattern/
02/each char in this pattern/
03/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
2/each char in this pattern/
05/each char in this pattern/
8/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
7// Removing the first character
string.slice(1);
// Removing the last character
string.slice(0, string.length - 1); 2/each char in this pattern/
4/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
7/a{2}/
//precisely two 'a' chars - matches identically as /aa/ would
/[aA]{1,3}/
//1-3 matches of 'a' or 'A'
/[a-zA-Z]+/
//one or more matches of any letter in the alphabet upper and lower
//'-' denotes a sequence in a character class
/[0-9]*/
//0 to any number of matches of any decimal character (/\d*/ would also work)
4/each char in this pattern/
4/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
7/each char in this pattern/
3/each char in this pattern/
15Output:  Phương pháp 2: Sử dụng phương thức thay thế () với biểu thức chính quy: Phương thức này được sử dụng để loại bỏ tất cả các lần xuất hiện của ký tự được chỉ định, không giống như phương thức trước đó. Một biểu thức thông thường được sử dụng thay vì chuỗi cùng với thuộc tính toàn cầu. Nó sẽ chọn mọi lần xuất hiện trong chuỗi và nó có thể được xóa. & NBSP; The slice() method is used to extract parts of a string between the given parameters. This
method takes the starting index and the ending index of the string and returns the string in between these indices. If the ending index is not specified, it is assumed to be the length of the string. The first character could be removed by specifying the beginning index to be 1. It extracts the string from the second character up to the end of the string. The last character could be removed by specifying the ending index to be one less than the length of the string. This extracts the string from
the beginning of the string to the second to last character. Syntax: // Removing the first character
string.slice(1);
// Removing the last character
string.slice(0, string.length - 1); Example: HTML/each char in this pattern/
1/each char in this pattern/
2/each char in this pattern/
3/each char in this pattern/
4/each char in this pattern/
2/each char in this pattern/
6/each char in this pattern/
4/each char in this pattern/
8/each char in this pattern/
2/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
0/each char in this pattern/
4/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
2/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
3/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
2/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
5/each char in this pattern/
8/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
7/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
0/each char in this pattern/
4/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
7/each char in this pattern/
6/each char in this pattern/
4/each char in this pattern/
2/a{2}/
//precisely two 'a' chars - matches identically as /aa/ would
/[aA]{1,3}/
//1-3 matches of 'a' or 'A'
/[a-zA-Z]+/
//one or more matches of any letter in the alphabet upper and lower
//'-' denotes a sequence in a character class
/[0-9]*/
//0 to any number of matches of any decimal character (/\d*/ would also work)
4/each char in this pattern/
4/each char in this pattern/
8/each char in this pattern/
2/a{2}/
//precisely two 'a' chars - matches identically as /aa/ would
/[aA]{1,3}/
//1-3 matches of 'a' or 'A'
/[a-zA-Z]+/
//one or more matches of any letter in the alphabet upper and lower
//'-' denotes a sequence in a character class
/[0-9]*/
//0 to any number of matches of any decimal character (/\d*/ would also work)
8 /a{2}/
//precisely two 'a' chars - matches identically as /aa/ would
/[aA]{1,3}/
//1-3 matches of 'a' or 'A'
/[a-zA-Z]+/
//one or more matches of any letter in the alphabet upper and lower
//'-' denotes a sequence in a character class
/[0-9]*/
//0 to any number of matches of any decimal character (/\d*/ would also work)
9/each char in this pattern/
8/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
7/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
0/each char in this pattern/
4/each char in this pattern/
8/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
7/a{2}/
//precisely two 'a' chars - matches identically as /aa/ would
/[aA]{1,3}/
//1-3 matches of 'a' or 'A'
/[a-zA-Z]+/
//one or more matches of any letter in the alphabet upper and lower
//'-' denotes a sequence in a character class
/[0-9]*/
//0 to any number of matches of any decimal character (/\d*/ would also work)
8/each char in this pattern/
4/each char in this pattern/
8/each char in this pattern/
2 var rePattern = /[aA]{4,8}(Eat at Joes|Joes all you can eat)[0-5]+/g
var joesStr = 'aaaAAAaaEat at Joes123454321 or maybe aAaAJoes all you can eat098765';
joesStr.match(rePattern);
//returns ["aaaAAAaaEat at Joes123454321", "aAaAJoes all you can eat0"]
//without the 'g' after the closing '/' it would just stop at the first match and return:
//["aaaAAAaaEat at Joes123454321"]
8/each char in this pattern/
4/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
2/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
3/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
2/cat/
3/each char in this pattern/
8/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
7 var rePattern = /[aA]{4,8}(Eat at Joes|Joes all you can eat)[0-5]+/g
var joesStr = 'aaaAAAaaEat at Joes123454321 or maybe aAaAJoes all you can eat098765';
joesStr.match(rePattern);
//returns ["aaaAAAaaEat at Joes123454321", "aAaAJoes all you can eat0"]
//without the 'g' after the closing '/' it would just stop at the first match and return:
//["aaaAAAaaEat at Joes123454321"]
8/each char in this pattern/
4/each char in this pattern/
8/each char in this pattern/
2/[aA]{4,8}(Eat at Joes|Joes all you can eat)[0-5]+/
0/[aA]{4,8}(Eat at Joes|Joes all you can eat)[0-5]+/
1/[aA]{4,8}(Eat at Joes|Joes all you can eat)[0-5]+/
0/each char in this pattern/
4/each char in this pattern/
8/each char in this pattern/
2/[aA]{4,8}(Eat at Joes|Joes all you can eat)[0-5]+/
0/each char in this pattern/
4/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
2/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
79/each char in this pattern/
8/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
7/[aA]{4,8}(Eat at Joes|Joes all you can eat)[0-5]+/
0/each char in this pattern/
4/each char in this pattern/
8/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
7/[aA]{4,8}(Eat at Joes|Joes all you can eat)[0-5]+/
0/each char in this pattern/
4/each char in this pattern/
8/each char in this pattern/
2/[aA]{4,8}(Eat at Joes|Joes all you can eat)[0-5]+/
0/each char in this pattern/
4/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
2/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
95Phương pháp 3: Loại bỏ ký tự đầu tiên hoặc cuối cùng bằng phương thức Slice (): Phương thức Slice () được sử dụng để trích xuất các phần của chuỗi giữa các tham số đã cho. Phương thức này lấy chỉ mục bắt đầu và chỉ mục kết thúc của chuỗi và trả về chuỗi ở giữa các chỉ số này. Nếu chỉ mục kết thúc không được chỉ định, nó được coi là độ dài của chuỗi. Ký tự đầu tiên có thể được xóa bằng cách chỉ định chỉ mục bắt đầu là 1. nó trích xuất chuỗi từ ký tự thứ hai cho đến cuối chuỗi. Ký tự cuối cùng có thể được xóa bằng cách chỉ định chỉ mục kết thúc là một ít hơn độ dài của chuỗi. Điều này trích xuất chuỗi từ đầu chuỗi đến ký tự thứ hai đến cuối cùng. /each char in this pattern/
8/each char in this pattern/
2string.replace(/regExp/g, ''); 2 string.replace(/regExp/g, ''); 3/each char in this pattern/
8/each char in this pattern/
2string.replace(/regExp/g, ''); 2 string.replace(/regExp/g, ''); 3/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
2string.replace(/regExp/g, ''); 5/each char in this pattern/
8/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
7string.replace(/regExp/g, ''); 2/each char in this pattern/
4/each char in this pattern/
8/each char in this pattern/
2// Removing the first character
string.slice(1);
// Removing the last character
string.slice(0, string.length - 1); 2 // Removing the first character
string.slice(1);
// Removing the last character
string.slice(0, string.length - 1); 3/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
2// Removing the first character
string.slice(1);
// Removing the last character
string.slice(0, string.length - 1); 5// Removing the first character
string.slice(1);
// Removing the last character
string.slice(0, string.length - 1); 6// Removing the first character
string.slice(1);
// Removing the last character
string.slice(0, string.length - 1); 7// Removing the first character
string.slice(1);
// Removing the last character
string.slice(0, string.length - 1); 6/a{2}/
//precisely two 'a' chars - matches identically as /aa/ would
/[aA]{1,3}/
//1-3 matches of 'a' or 'A'
/[a-zA-Z]+/
//one or more matches of any letter in the alphabet upper and lower
//'-' denotes a sequence in a character class
/[0-9]*/
//0 to any number of matches of any decimal character (/\d*/ would also work)
25// Removing the first character
string.slice(1);
// Removing the last character
string.slice(0, string.length - 1); 6/a{2}/
//precisely two 'a' chars - matches identically as /aa/ would
/[aA]{1,3}/
//1-3 matches of 'a' or 'A'
/[a-zA-Z]+/
//one or more matches of any letter in the alphabet upper and lower
//'-' denotes a sequence in a character class
/[0-9]*/
//0 to any number of matches of any decimal character (/\d*/ would also work)
27/a{2}/
//precisely two 'a' chars - matches identically as /aa/ would
/[aA]{1,3}/
//1-3 matches of 'a' or 'A'
/[a-zA-Z]+/
//one or more matches of any letter in the alphabet upper and lower
//'-' denotes a sequence in a character class
/[0-9]*/
//0 to any number of matches of any decimal character (/\d*/ would also work)
28/a{2}/
//precisely two 'a' chars - matches identically as /aa/ would
/[aA]{1,3}/
//1-3 matches of 'a' or 'A'
/[a-zA-Z]+/
//one or more matches of any letter in the alphabet upper and lower
//'-' denotes a sequence in a character class
/[0-9]*/
//0 to any number of matches of any decimal character (/\d*/ would also work)
29// Removing the first character
string.slice(1);
// Removing the last character
string.slice(0, string.length - 1); 6/a{2}/
//precisely two 'a' chars - matches identically as /aa/ would
/[aA]{1,3}/
//1-3 matches of 'a' or 'A'
/[a-zA-Z]+/
//one or more matches of any letter in the alphabet upper and lower
//'-' denotes a sequence in a character class
/[0-9]*/
//0 to any number of matches of any decimal character (/\d*/ would also work)
31/each char in this pattern/
02/a{2}/
//precisely two 'a' chars - matches identically as /aa/ would
/[aA]{1,3}/
//1-3 matches of 'a' or 'A'
/[a-zA-Z]+/
//one or more matches of any letter in the alphabet upper and lower
//'-' denotes a sequence in a character class
/[0-9]*/
//0 to any number of matches of any decimal character (/\d*/ would also work)
33// Removing the first character
string.slice(1);
// Removing the last character
string.slice(0, string.length - 1); 6/a{2}/
//precisely two 'a' chars - matches identically as /aa/ would
/[aA]{1,3}/
//1-3 matches of 'a' or 'A'
/[a-zA-Z]+/
//one or more matches of any letter in the alphabet upper and lower
//'-' denotes a sequence in a character class
/[0-9]*/
//0 to any number of matches of any decimal character (/\d*/ would also work)
35/each char in this pattern/
02/a{2}/
//precisely two 'a' chars - matches identically as /aa/ would
/[aA]{1,3}/
//1-3 matches of 'a' or 'A'
/[a-zA-Z]+/
//one or more matches of any letter in the alphabet upper and lower
//'-' denotes a sequence in a character class
/[0-9]*/
//0 to any number of matches of any decimal character (/\d*/ would also work)
37/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
2/each char in this pattern/
05/each char in this pattern/
8/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
7// Removing the first character
string.slice(1);
// Removing the last character
string.slice(0, string.length - 1); 2/each char in this pattern/
4/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
7/a{2}/
//precisely two 'a' chars - matches identically as /aa/ would
/[aA]{1,3}/
//1-3 matches of 'a' or 'A'
/[a-zA-Z]+/
//one or more matches of any letter in the alphabet upper and lower
//'-' denotes a sequence in a character class
/[0-9]*/
//0 to any number of matches of any decimal character (/\d*/ would also work)
4/each char in this pattern/
4/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
7/each char in this pattern/
3/each char in this pattern/
15Output:
Phương pháp 4: Loại bỏ một ký tự cụ thể tại chỉ mục đã cho bằng phương thức Subr (): Phương thức này có thể được sử dụng để xóa một ký tự khỏi một chỉ mục cụ thể trong chuỗi. Phương thức chuỗi con () được sử dụng để trích xuất các phần của chuỗi giữa các tham số đã cho. Phương thức này có hai tham số, một là chỉ mục bắt đầu và một là chỉ mục kết thúc của chuỗi. Chuỗi giữa các chỉ số này được trả về. Phần của chuỗi trước và sau khi ký tự được loại bỏ được tách ra và kết hợp với nhau. Điều này loại bỏ ký tự khỏi chỉ số cụ thể. This method can be used to remove a character from a particular index in the string. The substr() method is used to extract parts of a string between the given parameters. This method takes two parameters, one is the starting index and the other is the ending index of the string. The string between these indices is returned. The portion of the string before and after the character to be removed is separated and joined together. This removes the character from the specific
index. Syntax:Syntax: /each char in this pattern/
0Example: HTML/each char in this pattern/
1/each char in this pattern/
2/each char in this pattern/
3/each char in this pattern/
4/each char in this pattern/
2/each char in this pattern/
6/each char in this pattern/
4/each char in this pattern/
8/each char in this pattern/
2/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
0/each char in this pattern/
4/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
2/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
3/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
2/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
5/each char in this pattern/
8/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
7/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
0/each char in this pattern/
4/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
7/each char in this pattern/
6/each char in this pattern/
4/each char in this pattern/
2/a{2}/
//precisely two 'a' chars - matches identically as /aa/ would
/[aA]{1,3}/
//1-3 matches of 'a' or 'A'
/[a-zA-Z]+/
//one or more matches of any letter in the alphabet upper and lower
//'-' denotes a sequence in a character class
/[0-9]*/
//0 to any number of matches of any decimal character (/\d*/ would also work)
4/each char in this pattern/
4/each char in this pattern/
8/each char in this pattern/
2/a{2}/
//precisely two 'a' chars - matches identically as /aa/ would
/[aA]{1,3}/
//1-3 matches of 'a' or 'A'
/[a-zA-Z]+/
//one or more matches of any letter in the alphabet upper and lower
//'-' denotes a sequence in a character class
/[0-9]*/
//0 to any number of matches of any decimal character (/\d*/ would also work)
8 /a{2}/
//precisely two 'a' chars - matches identically as /aa/ would
/[aA]{1,3}/
//1-3 matches of 'a' or 'A'
/[a-zA-Z]+/
//one or more matches of any letter in the alphabet upper and lower
//'-' denotes a sequence in a character class
/[0-9]*/
//0 to any number of matches of any decimal character (/\d*/ would also work)
9/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
2 var rePattern = /[aA]{4,8}(Eat at Joes|Joes all you can eat)[0-5]+/g
var joesStr = 'aaaAAAaaEat at Joes123454321 or maybe aAaAJoes all you can eat098765';
joesStr.match(rePattern);
//returns ["aaaAAAaaEat at Joes123454321", "aAaAJoes all you can eat0"]
//without the 'g' after the closing '/' it would just stop at the first match and return:
//["aaaAAAaaEat at Joes123454321"]
1/each char in this pattern/
8/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
7/a{2}/
//precisely two 'a' chars - matches identically as /aa/ would
/[aA]{1,3}/
//1-3 matches of 'a' or 'A'
/[a-zA-Z]+/
//one or more matches of any letter in the alphabet upper and lower
//'-' denotes a sequence in a character class
/[0-9]*/
//0 to any number of matches of any decimal character (/\d*/ would also work)
8/each char in this pattern/
4/each char in this pattern/
8/each char in this pattern/
2 var rePattern = /[aA]{4,8}(Eat at Joes|Joes all you can eat)[0-5]+/g
var joesStr = 'aaaAAAaaEat at Joes123454321 or maybe aAaAJoes all you can eat098765';
joesStr.match(rePattern);
//returns ["aaaAAAaaEat at Joes123454321", "aAaAJoes all you can eat0"]
//without the 'g' after the closing '/' it would just stop at the first match and return:
//["aaaAAAaaEat at Joes123454321"]
8/each char in this pattern/
4/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
2/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
3/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
2/cat/
3/each char in this pattern/
8/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
7 var rePattern = /[aA]{4,8}(Eat at Joes|Joes all you can eat)[0-5]+/g
var joesStr = 'aaaAAAaaEat at Joes123454321 or maybe aAaAJoes all you can eat098765';
joesStr.match(rePattern);
//returns ["aaaAAAaaEat at Joes123454321", "aAaAJoes all you can eat0"]
//without the 'g' after the closing '/' it would just stop at the first match and return:
//["aaaAAAaaEat at Joes123454321"]
8/each char in this pattern/
4/each char in this pattern/
8/each char in this pattern/
2/[aA]{4,8}(Eat at Joes|Joes all you can eat)[0-5]+/
0/[aA]{4,8}(Eat at Joes|Joes all you can eat)[0-5]+/
1/[aA]{4,8}(Eat at Joes|Joes all you can eat)[0-5]+/
0/each char in this pattern/
4/each char in this pattern/
8/each char in this pattern/
2/[aA]{4,8}(Eat at Joes|Joes all you can eat)[0-5]+/
0/each char in this pattern/
4/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
2/[aA]{4,8}(Eat at Joes|Joes all you can eat)[0-5]+/
9/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
2/each char in this pattern/
2string.replace('characterToReplace', '');2 string.replace('characterToReplace', '');3string.replace('characterToReplace', '');2/each char in this pattern/
4/each char in this pattern/
8/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
7/[aA]{4,8}(Eat at Joes|Joes all you can eat)[0-5]+/
0/each char in this pattern/
4/each char in this pattern/
8/each char in this pattern/
2string.replace(/regExp/g, ''); 2 var rePattern = /[aA]{4,8}(Eat at Joes|Joes all you can eat)[0-5]+/g
var joesStr = 'aaaAAAaaEat at Joes123454321 or maybe aAaAJoes all you can eat098765';
joesStr.match(rePattern);
//returns ["aaaAAAaaEat at Joes123454321", "aAaAJoes all you can eat0"]
//without the 'g' after the closing '/' it would just stop at the first match and return:
//["aaaAAAaaEat at Joes123454321"]
22/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
2string.replace(/regExp/g, ''); 5/each char in this pattern/
8/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
7string.replace(/regExp/g, ''); 2/each char in this pattern/
4/each char in this pattern/
8/each char in this pattern/
2// Removing the first character
string.slice(1);
// Removing the last character
string.slice(0, string.length - 1); 2 // Removing the first character
string.slice(1);
// Removing the last character
string.slice(0, string.length - 1); 3/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
2 var rePattern = /[aA]{4,8}(Eat at Joes|Joes all you can eat)[0-5]+/g
var joesStr = 'aaaAAAaaEat at Joes123454321 or maybe aAaAJoes all you can eat098765';
joesStr.match(rePattern);
//returns ["aaaAAAaaEat at Joes123454321", "aAaAJoes all you can eat0"]
//without the 'g' after the closing '/' it would just stop at the first match and return:
//["aaaAAAaaEat at Joes123454321"]
34// Removing the first character
string.slice(1);
// Removing the last character
string.slice(0, string.length - 1); 6// Removing the first character
string.slice(1);
// Removing the last character
string.slice(0, string.length - 1); 7// Removing the first character
string.slice(1);
// Removing the last character
string.slice(0, string.length - 1); 6 var rePattern = /[aA]{4,8}(Eat at Joes|Joes all you can eat)[0-5]+/g
var joesStr = 'aaaAAAaaEat at Joes123454321 or maybe aAaAJoes all you can eat098765';
joesStr.match(rePattern);
//returns ["aaaAAAaaEat at Joes123454321", "aAaAJoes all you can eat0"]
//without the 'g' after the closing '/' it would just stop at the first match and return:
//["aaaAAAaaEat at Joes123454321"]
38// Removing the first character
string.slice(1);
// Removing the last character
string.slice(0, string.length - 1); 6 var rePattern = /[aA]{4,8}(Eat at Joes|Joes all you can eat)[0-5]+/g
var joesStr = 'aaaAAAaaEat at Joes123454321 or maybe aAaAJoes all you can eat098765';
joesStr.match(rePattern);
//returns ["aaaAAAaaEat at Joes123454321", "aAaAJoes all you can eat0"]
//without the 'g' after the closing '/' it would just stop at the first match and return:
//["aaaAAAaaEat at Joes123454321"]
40// Removing the first character
string.slice(1);
// Removing the last character
string.slice(0, string.length - 1); 6 var rePattern = /[aA]{4,8}(Eat at Joes|Joes all you can eat)[0-5]+/g
var joesStr = 'aaaAAAaaEat at Joes123454321 or maybe aAaAJoes all you can eat098765';
joesStr.match(rePattern);
//returns ["aaaAAAaaEat at Joes123454321", "aAaAJoes all you can eat0"]
//without the 'g' after the closing '/' it would just stop at the first match and return:
//["aaaAAAaaEat at Joes123454321"]
42/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
2/each char in this pattern/
05/each char in this pattern/
8/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
7// Removing the first character
string.slice(1);
// Removing the last character
string.slice(0, string.length - 1); 2/each char in this pattern/
4/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
7/a{2}/
//precisely two 'a' chars - matches identically as /aa/ would
/[aA]{1,3}/
//1-3 matches of 'a' or 'A'
/[a-zA-Z]+/
//one or more matches of any letter in the alphabet upper and lower
//'-' denotes a sequence in a character class
/[0-9]*/
//0 to any number of matches of any decimal character (/\d*/ would also work)
4/each char in this pattern/
4/[123!y]/
//any one of these
/[^123!y]/
//anything but one of the chars following '^' (very useful/performance enhancing btw)
7/each char in this pattern/
3/each char in this pattern/
15Output: Phương pháp 4: Loại bỏ một ký tự cụ thể tại chỉ mục đã cho bằng phương thức Subr (): Phương thức này có thể được sử dụng để xóa một ký tự khỏi một chỉ mục cụ thể trong chuỗi. Phương thức chuỗi con () được sử dụng để trích xuất các phần của chuỗi giữa các tham số đã cho. Phương thức này có hai tham số, một là chỉ mục bắt đầu và một là chỉ mục kết thúc của chuỗi. Chuỗi giữa các chỉ số này được trả về. Phần của chuỗi trước và sau khi ký tự được loại bỏ được tách ra và kết hợp với nhau. Điều này loại bỏ ký tự khỏi chỉ số cụ thể.
Làm cách nào để loại bỏ một ký tự khỏi chuỗi trong HTML?
Phương pháp 1: Sử dụng phương thức thay thế (): Phương thức thay thế được sử dụng để thay thế một ký tự/chuỗi cụ thể bằng ký tự/chuỗi khác. Phải mất hai tham số, đầu tiên là chuỗi được thay thế và thứ hai là chuỗi sẽ được thay thế bằng.Using replace() method: The replace method is used to replace a specific character/string with other character/string. It takes two parameters, first is the string to be replaced and the second is the string which is to be replaced with.
Làm cách nào để loại bỏ các ký tự không mong muốn khỏi chuỗi?
Bạn có thể sử dụng một biểu thức thông thường và phương thức thay thế () của lớp java.lang.String để xóa tất cả các ký tự đặc biệt khỏi chuỗi.use a regular expression and replaceAll() method of java. lang. String class to remove all special characters from String.
Làm cách nào để loại bỏ 5 ký tự đầu tiên khỏi chuỗi?
Sử dụng phương thức String.SubString () để xóa N các ký tự đầu tiên khỏi chuỗi, ví dụ:const result = str.Subring (n).Phương thức chuỗi con sẽ trả về một chuỗi mới không chứa các ký tự N đầu tiên của chuỗi gốc. substring() method to remove the first N characters from a string, e.g. const result = str. substring(N) . The substring method will return a new string that doesn't contain the first N characters of the original string.
Làm cách nào để loại bỏ 3 ký tự cuối cùng khỏi một chuỗi?
Bạn có thể sử dụng chuỗi.Chất nền và cung cấp cho nó chỉ số bắt đầu và nó sẽ nhận được bộ nền bắt đầu từ chỉ mục đã cho đến cuối.Để xóa ba ký tự cuối cùng khỏi chuỗi, bạn có thể sử dụng String.SubString (Int32, Int32) và cung cấp cho nó chỉ mục bắt đầu 0 và chỉ mục kết thúc ba so với độ dài chuỗi.string. Substring(Int32, Int32) and give it the starting index 0 and end index three less than the string length. | 
