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Editor to share with you how to use ajaxStart (), I believe most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

.ajaxStart () description: executes a handler function at the beginning of an AJAX request. This is an Ajax Event.

Whenever an Ajax request is about to be sent, jQuery checks to see if there are any other Ajax requests in the process of response (note: outstanding requests). If not, jQuery triggers the ajaxStart event, and at this point all handlers are registered and executed using the .ajaxStart () method.

Observe this method and establish a basic Ajax load request:

Trigger

Bind the event handler on the document element:

$(document) .ajaxStart (function () {

$(".log") .text ("Triggered ajaxStart handler.")

})

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