Why is my JavaScript code throwing an 'Uncaught ReferenceError: $ is not defined' error?

Uncaught ReferenceError: $ is not defined?

This error occurs when a JavaScript code uses the jQuery variable ($) without referencing the jQuery library. When this code worked before, it's likely that the order of the script references has changed.

The jQuery library reference should be loaded before any other scripts that rely on it. In the HTML header, the script references should be arranged as follows:

<script src="/js/jquery-1.2.6.min.js"></script>
<script src="/js/jquery-ui-personalized-1.5.2.packed.js"></script>
<script src="/js/sprinkle.js"></script>

This ensures that the jQuery library is available when the code in sprinkle.js executes, preventing the "Uncaught ReferenceError: $ is not defined" error. The order the scripts are referenced within the tag can significantly impact code behavior, especially for libraries that have dependencies. By following best practices and referencing dependent libraries before using them, you can ensure smooth and bug-free execution of your code.

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