Hi there everyone how can I detect if the user input has just empty spaces? Show
Detect this:
DO NOT detect this:
I just want to detect if there is a space in the input and that's it? Here is what i have tried:
but this comes up with an error if the name is "john doe"; What way is the fastest to process? How can i achieve this with or without jquery?
asked Apr 22, 2018 at 0:05
0 function
answered Apr 22, 2018 at 0:07
EleEle 32.9k7 gold badges34 silver badges73 bronze badges 1 Visual Studio Code is an editor first and foremost, and includes the features you need for highly productive source code editing. This topic takes you through the basics of the editor and helps you get moving with your code. Keyboard shortcutsBeing able to keep your hands on the keyboard when writing code is crucial for high productivity. VS Code has a rich set of default keyboard shortcuts as well as allowing you to customize them.
Multiple selections (multi-cursor)VS Code supports multiple cursors for fast simultaneous edits. You can add secondary cursors (rendered thinner) with Alt+Click. Each cursor operates independently based on the context it sits in. A common way to add more cursors is with ⌥⌘↓ (Windows Ctrl+Alt+Down, Linux Shift+Alt+Down) or ⌥⌘↑ (Windows Ctrl+Alt+Up, Linux Shift+Alt+Up) that insert cursors below or above.
⌘D (Windows, Linux Ctrl+D) selects the word at the cursor, or the next occurrence of the current selection.
Multi-cursor modifierIf you'd like to change the modifier key for applying multiple cursors to Cmd+Click on macOS and Ctrl+Click on Windows and Linux, you can do so with the The setting can be set to:
There's also a menu item Use Ctrl+Click for Multi-Cursor in the Selection menu to quickly toggle this setting. The Go to Definition and Open Link gestures will also respect this setting and adapt such that they do not
conflict. For example, when the setting is Shrink/expand selectionQuickly shrink or expand the current selection. Trigger it with ⌃⇧⌘← (Windows, Linux Shift+Alt+Left) and ⌃⇧⌘→ (Windows, Linux Shift+Alt+Right). Here's an example of expanding the selection with ⌃⇧⌘→ (Windows, Linux Shift+Alt+Right): Column (box) selectionPlace the cursor in one corner and then hold Shift+Alt while dragging to the opposite corner: Note: This changes to Shift+Ctrl/Cmd when using Ctrl/Cmd as multi-cursor modifier. There are also default key bindings for column selection on macOS and Windows, but not on Linux.
You can edit your Column Selection modeThe user setting Editor: Column Selection controls this feature. Once this mode is entered, as indicated in the Status bar, the mouse gestures and the arrow keys will create a column selection by default. This global toggle is also accessible via the Selection > Column Selection Mode menu item. In addition, one can also disable Column Selection mode from the Status bar. Save / Auto SaveBy default, VS Code requires an explicit action to save your changes to disk, ⌘S (Windows, Linux Ctrl+S). However, it's easy to turn on For more control over
Hot ExitVS Code will remember unsaved changes to files when you exit by default. Hot exit is triggered when the application is closed via File > Exit (Code > Quit on macOS) or when the last window is closed. You can configure hot exit by setting
If something happens to go wrong with hot exit, all backups are stored in the following folders for standard install locations:
Find and ReplaceVS Code allows you to quickly find text and replace in the currently opened file. Press ⌘F (Windows, Linux Ctrl+F) to open the Find Widget in the editor, search results will be highlighted in the editor, overview ruler and minimap. If there are more than one matched result in the current opened file, you can press Enter and ⇧Enter (Windows, Linux Shift+Enter) to navigate to next or previous result when the find input box is focused. Seed Search String From SelectionWhen the Find Widget is opened, it will automatically populate the selected text in the editor into the find input box. If the selection is empty, the word under the cursor will be inserted into the input box instead. This feature can be turned off by setting Find In SelectionBy default, the find operations are run on the entire file in the editor. It can also be run on selected text. You can turn this feature on by clicking the hamburger icon on the Find Widget. If you want it to be the default behavior of the Find Widget, you can set Advanced find and replace optionsIn addition to find and replace with plain text, the Find Widget also has three advanced search options:
The replace input box support case preserving, you can turn it on by clicking the Preserve Case (AB) button. Multiline support and Find Widget resizingYou can search multiple line text by pasting the text into the Find input box and Replace input box. Pressing While searching long text, the default size of Find Widget might be too small. You can drag the left sash to enlarge the Find Widget or double click the left sash to maximize it or shrink it to its default size. Search across filesVS Code allows you to quickly search over all files in the currently opened folder. Press ⇧⌘F (Windows, Linux Ctrl+Shift+F) and enter your search term. Search results are grouped into files containing the search term, with an indication of the hits in each file and its location. Expand a file to see a preview of all of the hits within that file. Then single-click on one of the hits to view it in the editor.
You can configure advanced search options by clicking the ellipsis (Toggle Search Details) below the search box on the right (or press ⇧⌘J (Windows, Linux Ctrl+Shift+J)). This will show additional fields to configure the search. Advanced search optionsIn the two input boxes below the search box, you can enter patterns to include or exclude from the search. If you enter
VS Code excludes some folders by default to reduce the number of search results that you are not interested in (for example: Note that glob patterns in the search view work differently than in settings such as Also note the Use Exclude Settings and Ignore Files toggle button in the files to exclude box. The toggle determines whether to exclude files that are ignored by
your
Search and replaceYou can also Search and Replace across files. Expand the Search widget to display the Replace text box. When you type text into the Replace text box, you will see a diff display of the pending changes. You can replace across all files from the Replace text box, replace all in one file or replace a single change.
Case changing in regex replaceVS Code supports changing the case of regex matching groups while doing Search and Replace in the editor or globally. This is done with the modifiers Example: The modifiers can also be stacked - for example, Search EditorSearch Editors let you view workspace search results in a full-sized editor, complete with syntax highlighting and optional lines of surrounding context. Below is a search for the word 'SearchEditor' with two lines of text before and after the match for context: The Open Search Editor command opens an existing Search Editor if one exists, or to otherwise create a new one. The New Search Editor command will always create a new Search Editor. In the Search Editor, results can be navigated to using Go to Definition actions, such as
F12 to open the source location in the current editor group, or ⌘K F12 (Windows, Linux Ctrl+K F12) to open the location in an editor to the side. Additionally, double-clicking can optionally open the source location,
configurable with the You can also use the Open New Search Editor button at the top of the Search view, and can copy your existing results from a Search view over to a Search Editor with the Open in editor link at the top of the results tree, or the Search Editor: Open Results in Editor command. The Search Editor above was opened by selecting the Open New Search Editor button (third button) on the top of the Search view. Search Editor commands and arguments
There are two arguments that you can pass to the Search Editor commands (
For example, the following keybinding runs the search when the Search Editor is opened but leaves the focus in the search query control.
Search Editor context defaultThe Reuse last Search Editor configurationThe IntelliSenseWe'll always offer word completion, but for the rich languages, such as JavaScript, JSON, HTML, CSS, SCSS, Less, C# and TypeScript, we offer a true IntelliSense experience. If a language service knows possible completions, the IntelliSense suggestions will pop up as you type. You can always manually trigger it with ⌃Space (Windows, Linux Ctrl+Space). By default, Tab or Enter are the accept keyboard triggers but you can also customize these key bindings.
JavaScript and TypeScript developers can take advantage of the npmjs type declaration (typings) file repository to get IntelliSense for common JavaScript libraries (Node.js, React, Angular). You can find a good explanation on using type declaration files in the JavaScript language topic and the Node.js tutorial. Learn more in the IntelliSense document. FormattingVS Code has great support for source code formatting. The editor has two explicit format actions:
You can invoke these from the Command Palette (⇧⌘P (Windows, Linux Ctrl+Shift+P)) or the editor context menu. VS Code has default formatters for JavaScript, TypeScript, JSON, and HTML. Each language has specific formatting options (for example,
Along with manually invoking code formatting, you can also trigger formatting based on user gestures such as typing, saving or pasting. These are off by default but you can enable these behaviors through the following settings:
In addition to the default formatters, you can find extensions on the Marketplace to support other languages or formatting tools. There is a FoldingYou can fold regions of source code using the folding icons on the gutter between line numbers and line start. Move the mouse over the gutter and click to fold and unfold regions. Use Shift + Click on the folding icon to fold or unfold the region and all regions inside. You can also use the following actions:
Folding regions are by default evaluated based on the indentation of lines. A folding region starts when a line has a smaller indent than one or more following lines, and ends when there is a line with the same or smaller indent. Folding regions can also be computed based on syntax tokens of the editor's configured language. The following languages already provide syntax aware folding: Markdown, HTML, CSS, LESS, SCSS, and JSON. If you prefer to switch back to indentation-based folding for one (or all) of the languages above, use:
Regions can also be defined by markers defined by each language. The following languages currently have markers defined:
To fold and unfold only the regions defined by markers use:
Fold selectionThe command Create Manual Folding Ranges from Selection (⌘K ⌘, (Windows, Linux Ctrl+K Ctrl+,)) creates a folding range from the currently selected lines and collapses it. That range is called a manual folding range that goes on top of the ranges computed by folding providers. Manual folding ranges can be removed with the command Remove Manual Folding Ranges (⌘K ⌘. (Windows, Linux Ctrl+K Ctrl+.)). Manual folding ranges are especially useful for cases when there isn't programming language support for folding. IndentationVS Code lets you control text indentation and whether you'd like to use spaces or tab stops. By default, VS Code inserts spaces and uses 4 spaces per Tab key. If you'd like to use another default, you can modify the
Auto-detectionVS Code analyzes your open file and determines the indentation used in the document. The auto-detected indentation overrides your default indentation settings. The detected setting is displayed on the right side of the Status Bar: You can click on the Status Bar indentation display to bring up a dropdown with indentation commands allowing you to change the default settings for the open file or convert between tab stops and spaces.
File encoding supportSet the file encoding globally or per
workspace by using the You can view the file encoding in the status bar. Click on the encoding button in the status bar to reopen or save the active file with a different encoding. Then choose an encoding. Next stepsYou've covered the basic user interface - there is a lot more to VS Code. Read on to find out about:
Common questionsIs it possible to globally search and replace?Yes, expand the Search view text box to include a replace text field. You can search and replace across all the files in your workspace. Note that if you did not open VS Code on a folder, the search will only run on the currently open files. How do I turn on word wrap?You can control word wrap through the
You can toggle word wrap for the VS Code session with ⌥Z (Windows, Linux Alt+Z). You can also add vertical column rulers to the editor
with the 9/1/2022 |