if (typeof jQuery == 'undefined') {
// jQuery IS NOT loaded, do stuff here.
}Check if jQuery is Loaded
Chris Coyier
on
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I usually do
alert($);or
alert(jQuery);
use
if (typeof jQuery == 'function')or
if (typeof $== 'function')to check if jQuery is Loaded
if(jquery) will do tjob
if (jQuery) {
alert(“jquery is loaded”);
} else {
alert(” Not loaded”);
}
you can open developer console and type $ to check if jQuery is loaded or not
genius
checking just for “$” as some people suggest is certainly NOT enough to check for jQuery existence. Some websites may dont use jQuery in general but like the “$” function and just slice out this part from the jQuery library. Or they make their own like const $ = (elem) => document.querySelectorAll(elem); In both cases if you check for “$” you would get a function back even though jQuery is not existing. I agree with the people who check for the jQuery object –> if(window.jQuery).