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Comments in JavaScript

Last updated on:
function doSomething() {

           This code by Chris Coyier

    var i = 0;    // counter to be used later;


Comments in JavaScript can be between /* */ markings (useful for multiple line comments) or after // markings (for single lines only).


  1. dev
    Permalink to comment#

    nice articles

  2. willian keller
    Permalink to comment#


  3. Doug Dennison
    Permalink to comment#

    I want to temporarily disable one of two email addresses in a javascript field, e.g.:

    <option value=",">Email Address</option>

    Any way to comment out one or the other?


Leave a Comment

Posting Code

We highly encourage you to post problematic HTML/CSS/JavaScript over on CodePen and include the link in your post. It's much easier to see, understand, and help with when you do that.

Markdown is supported, so you can write inline code like `<div>this</div>` or multiline blocks of code in in triple backtick fences like this:

  function example() {
    element.innerHTML = "<div>code</div>";

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