Uncaught referenceerror $ is not defined – What is the reason?

Are you using plain old JavaScript, Angular JS, or jQuery? If yes, have you ever got the error Uncaught referenceerror $ is not defined? In this case, you can understand that you are trying to use $ which is a variable or a method before declaring it by utilizing the var keyword.

In jQuery, this is a short name of jQuery() function and it is used in $(document).ready(function()) commonly. So, if you are implementing some tasks in jQuery when DOM is loaded, this error may occur since the browser has trouble loading the jQuery library from the local file system or the Internet.

Uncaught Referenceerror $ Is Not Defined

Now, we will have a look at some common reasons that cause the error Uncaught referenceerror $ is not defined.

  • Reason 1: This error appears because the jQuery plugin is included before the jQuery file. By default, the jQuery plugin uses $, so the error will be showcased if it doesn’t find.
  • Reason 2: Another common reason for the error ReferenceError: $ is not defined is because of the incorrect path.
  • Reason 3: You may get the error if you are working offline but loading jQuery from the Internet.

Once understand the reasons, we would like to give you 3 solutions to fix the issue. Let’s explore the next part now!

How to solve the error Uncaught referenceerror $ is not defined?

If you get the error because of reason 1, you can deal with it by adding the jQuery.js file before the jQuery plugin files. For example:

<script src="/lib/jquery.min.js"></script>
<script src="/lib/jquery.plugin.js"></script>

With the reason 2, an incorrect path means that it is a typo or a jQuery file is moved to some other location, so the browsers won’t be able to load the jQuery file. In this case, it’s necessary for you to fix the path to the jQuery library.

The final solution to tackle the trouble is to check the Internet connection to make sure it works. Besides that, you can also use a local copy of the jQuery library. For instance:

<script src="/js/jquery.min.js"></script>

Wrap Up

All in all, we hope that the 3 solutions we suggested above will help you address the error Uncaught referenceerror $ is not defined. In case the error appears not because of the 3 reasons we mentioned, let’s show it by leaving the comment below. Therefore, we will try to find the best methods to help you fix it. Moreover, don’t forget to share it with your friends to give them more recommendations.

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