uncaught typeerror: $.ajax is not a function

The TypeError: $.ajax is not a function error message typically occurs if you are using a slim version of jQuery which does not include the ajax function.

To fix this error, you will use a regular version of jQuery instead of using the slim version.

Why we get this error $.ajax is not a function?

We get this error $.ajax is not a function because it means that the function we’re trying to call is not defined in your code.

In addition, this error occurs when the jQuery library fails to load properly, and as a result, the $.ajax function cannot be found.

Reasons for the “Uncaught TypeError $.ajax is not a function” Error

Here are some of the most common reasons why errors occur:

  • jQuery Library Not Loaded
  • jQuery Conflict
  • Syntax Errors
  • Incorrect Function Call

How to solve the TypeError: $.ajax is not a function error?

Here are the solutions to solve the TypeError: $.ajax is not a function error.

Solution 1: Load jQuery Library Correctly

To make sure that the jQuery library is loaded correctly, you will assure that the script tag is arranged before any JavaScript code that uses jQuery.

Also, make sure that the script tag has the correct path to the jQuery library file.

Solution 2: Use the Correct Version of jQuery

If there are various versions of jQuery loaded on a page, or if other JavaScript libraries are conflicting with jQuery, use the jQuery.noConflict() method to resolve conflicts and ensure that the correct version of jQuery is being used.

For example:

<script src="other_library.js"></script>
<script src="jquery_v1.js"></script>
  // Use jQuery v1.x
  var $j = jQuery.noConflict();
  $j(function() {
    // jQuery v1.x is ready to use
    $j("#myDiv").text("This is jQuery v1.x");
<script src="jquery_v2.js"></script>
  // Use jQuery v2.x
  jQuery(function() {
    // jQuery v2.x is ready to use
    jQuery("#myDiv").text("This is jQuery v2.x");

By using the jQuery.noConflict() method, conflicts between different versions of jQuery or other JavaScript libraries can be resolved, make sure that the correct version of jQuery is being used.

Solution 3: Check for Syntax Errors

Make sure that there are no syntax errors in the JavaScript code.

You can use a JavaScript syntax checker, such as JSLint or ESLint, to check for errors.

Solution 4: Check Function Call

Make sure you double-check the $.ajax function is being called correctly, and that the correct parameters are being passed.

Make sure that the URL being passed is correct, and that the data being sent is in the correct format.

Solution 5: Use a CDN

You can use a Content Delivery Network (CDN) to load jQuery it will be able to help ensure that the library is loaded correctly and lessen the chances of conflicts.

Solution 6: Updating jQuery Version

If none of the above solutions doesn’t work, you need to try to update the jQuery library to the latest version.

Additional Resources

Here are some additional resources that you can use to understand more about Python Typeeror:


In conclusion, we’ve discussed why we get the error, common reasons of errors and we provided solutions to resolve the error.

By knowing the reasons behind this error and following the solutions outlined in this article, you can quickly resolve this issue and get back to developing your website.


What is jQuery?

jQuery is a popular JavaScript library that simplifies HTML document manipulation, event handling, and animation.

What is the $.ajax function?

The $.ajax function is a jQuery function used to send HTTP requests and receive responses from a server.

Can I use another library instead of jQuery?

Yes, there are other libraries available that can be used instead of jQuery, such as Axios, Fetch, and Request.