How to comment out multiple lines in JavaScript?

How do you comment out a line in JavaScript?

Creating Single Line Comments

To create a single line comment in JavaScript, you place two slashes “//” in front of the code or text you wish to have the JavaScript interpreter ignore. When you place these two slashes, all text to the right of them will be ignored, until the next line.

How do you insert a comment with more than one line?

To comment more than one line:

  1. Select all the lines that you would like to be commented.
  2. Press Ctrl + / Two slashes “//” will be added to the front of each line, causing them to be recognized as a comment.

What is the correct way to start a multi line comment?

Multi line comments in Java start with /* and end with */. You can comment multiple lines just by placing them between /* and */.

How many types of JavaScript Comments are there?

There are two types of comments in JavaScript: single-line and multi-line. Comments can be used to explain or hide the code so it is not executed.

How do you comment multiple lines in typescript?

Commands

  1. press Ctrl+Alt+C twice.
  2. or select ‘Comment code’ from your context menu.
  3. or insert /** above the line of code.

How do you comment multiple lines on Spyder?

6 Answers

  1. Single line comment. Ctrl + 1.
  2. Multi-line comment select the lines to be commented. Ctrl + 4.
  3. Unblock Multi-line comment. Ctrl + 5.

How do you write comment lines?

A comment starts with a slash asterisk /* and ends with a asterisk slash */ and can be anywhere in your program. Comments can span several lines within your C program. Comments are typically added directly above the related C source code.

See also:  How to reference a JavaScript file in html?

How do you comment a script tag?

Comments

  1. Select some JavaScript code inside of a <script> block in an HTML file*.
  2. Use the keyboard shortcut to “Add a line comment” or run the command from the command palette.
  3. Note that in the latest Insiders build, it no longer uses //“JavaScript-valid comments; instead, it now uses ` comments.

What is the difference between single line comment and multi line comment?

Single-line comments (informally, C++ style), start with // and continue until the end of the line. If the last character in a comment line is a the comment will continue in the next line. Multi-line comments (informally, C style), start with /* and end with */ .

How do I comment in JSON?

JSON does not support comments. It was also never intended to be used for configuration files where comments would be needed. Hjson is a configuration file format for humans. Relaxed syntax, fewer mistakes, more comments.

Where is JavaScript used?

JavaScript is a text-based programming language used both on the client-side and server-side that allows you to make web pages interactive. Where HTML and CSS are languages that give structure and style to web pages, JavaScript gives web pages interactive elements that engage a user.

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