TypeError: $ is not a function in AJAX and Wordpress

Question

I try to add content on a div through AJAX on Wordpress. I use the JSON API to get posts from a specific category. Here is the code:

<div id="content" style="display:none;">This is my test</div>

<script type="text/javascript">


  $(document).ready(  
    function() {
      setInterval(function() {$.getJSON('/_jquerydownloaddata', 
           function(data) {
            if (data) {

              $("#content").show();
              $("#content").html(data)

            } else {

              $("#content").hide();

            }

           })}, 5000);
    });

    </script>

If I run it local without Wordpress, it runs without a problem. However, now I have this error on the $(document).ready line:

TypeError: $ is not a function

Change $ to jQuery and see if that helps. Basically, the error is trying to help you – $ really isn't a function, so you'll need to verify that jQuery has been loaded on the page above the script tag that you've included here. — Charlie Schliesser
– Charlie Schliesser, Commented Jan 27, 2015 at 17:31
You could pass jQuery like that: jQuery(document).ready(function($){...}); — A. Wolff
– A. Wolff, Commented Jan 27, 2015 at 17:40
@CharlieS Can you add your comment as an answer to accept it? — Tasos
– Tasos, Commented Feb 9, 2015 at 17:05

Charlie Schliesser · Accepted Answer · 2015-02-09 17:27:08Z

3

Change $ to jQuery and see if that helps. Basically, the error is trying to help you – $ really isn't a function, so you'll need to verify that jQuery has been loaded on the page above the script tag that you've included here.

answered Feb 9, 2015 at 17:27

Charlie Schliesser

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