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This article mainly introduces the use of jQuery.ajaxPrefilter, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let the editor take you to understand it.

JQuery.ajaxPrefilter ([dataTypes], handler (options, originalOptions, jqXHR))

Description: sent before each request and processed by $. Ajax () before they are processed, set custom Ajax options or modify existing options.

DataTypes

Type: String

An optional string containing one or more space-separated data types

Handler (options, originalOptions, jqXHR)

Type: Function ()

A handler that sets the default value for future Ajax requests.

Register a typical pre-filter that uses $.ajaxPrefilter (), which looks like this:

$.ajaxPrefilter (function (options, originalOptions, jqXHR) {

/ / Modify options, control originalOptions, store jqXHR, etc

})

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