关键词：
I was trying to get the fitVids.js to work on a WP site, and couldn't get it! I'd copied and pasted their example code, switched out my own selectors, and nothing!!! I kept trying different selectors, messed around a bit with the code, no dice. Finally checked the terminal and saw that I had an error.
# [TypeError: $ is not a function when calling jQuery function](https://stackoverflow.com/questions/12343714/typeerror-is-not-a-function-when-calling-jquery-function)
I have a simple jQuery script in a WordPress plugin that is using a jQuery wrapper like this:
```
$(document).ready(function()
// jQuery code is in here
);
```
I am calling this script from within the WordPress Dashboard and am loading it AFTER the jQuery framework has loaded.
When I check the page in Firebug I constantly keep receiving the error message:
```error
TypeError: $ is not a function
$(document).ready(function()
```
Should I maybe wrap the script in this function:
```
(function($)
// jQuery code is in here
)(jQuery);
```
I have had this error quite a few times and am not sure how to handle it.
Any help would be greatly appreciated.
-----
[Matthew Blancarte replies](https://stackoverflow.com/a/12343735/6412747):
This should fix it:
```
jQuery(document).ready(function($)
//you can now use $ as your jQuery object.
var body = $( 'body' );
);
```
Put simply, WordPress runs their own scripting before you can and they release the $ var so it won't collide with other libraries. This makes total sense, as WordPress is used for all kinds of web sites, apps, and of course, blogs.
From their documentation:
> The jQuery library included with WordPress is set to the noConflict() mode (see wp-includes/js/jquery/jquery.js). This is to prevent compatibility problems with other JavaScript libraries that WordPress can link.
> In the noConflict() mode, the global $ shortcut for jQuery is not available...
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