Uncaught Referenceerror: $ Is Not Defined Error in Jquery

Getting Uncaught ReferenceError: $ is not defined for jquery

Check Handling code which relies on jQuery before jQuery is loaded . It will solve your problem. Because your jquery is loaded. So t is recommended to put external scripts imports before the closing body tag, it allows asynchronous loading while the loading in the head tag is a blocking synchronous loading.

Console error Uncaught ReferenceError: $ is not defined

Your file can't be found. Try to replace your code from your current code to this.

<script src="http://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
<script src="http://cdn.datatables.net/1.10.7/js/jquery.dataTables.min.js"></script>

ReferenceError: $ is not defined

Add jQuery library before your script which uses $ or jQuery so that $ can be identified in scripts.

<script src="http://code.jquery.com/jquery-1.11.0.min.js"></script>

Uncaught ReferenceError: $ is not defined error in jQuery

Change the order you're including your scripts (jQuery first):

<script src="http://ajax.googleapis.com/ajax/libs/jquery/2.0.0/jquery.min.js"></script>
<script type="text/javascript" src="./javascript.js"></script>
<script
    src="http://maps.googleapis.com/maps/api/js?key=YOUR_APIKEY&sensor=false">
</script>

Uncaught ReferenceError: jQuery is not defined error when using select2

It turns out I tried to use select2 in my base.html file. I never referenced jQuary there.

base.html before:

  <link href="https://cdn.jsdelivr.net/npm/select2@4.1.0-rc.0/dist/css/select2.min.css" rel="stylesheet" />
  <script src="https://cdn.jsdelivr.net/npm/select2@4.1.0-rc.0/dist/js/select2.min.js"></script>

And after:

  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.6.0/jquery.min.js"></script>
  <link href="https://cdn.jsdelivr.net/npm/select2@4.1.0-rc.0/dist/css/select2.min.css" rel="stylesheet" />
  <script src="https://cdn.jsdelivr.net/npm/select2@4.1.0-rc.0/dist/js/select2.min.js"></script>

Small mistake that will hopefully save you 30 minutes of work. Check everything.

Uncaught ReferenceError: $ is not defined problem

You have to import jquery in your HTML file, do this before you import your own scripts.
This is one source to import jquery:
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
Here you can find more info about jquery: https://www.w3schools.com/jquery/jquery_get_started.asp

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