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JQuery is getting more and more popular, many people are using JQuery in WordPress. The right way to import JQuery to your WordPress is like this:

< ?php wp_enqueue_script(“jquery”); ? >

Rather than using <script> syntax. Remember to run this script before wp_head(). And then you can load your own JavaScript like this:

< script type=”text/javascript”
src=”< ?php bloginfo("template_url"); ? >/js/testScript.js” >< /script>

Also remember you must put this after wp_head().

I recently learn one more thing from Chris Coyier from DigWP, a simple way to prevent JQuery to conflict with other JavaScript libraries. Which is to set JQuery to “no conflict” mode and use “$j” instead of “$”:

var $j = jQuery.noConflict();

$j(function(){
    do something.
}

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