Detailed explanation of JQuery AJAX parameters with additional examples

This section mainly supplements the introduction of JQuery AJAX parameters and attaches examples. Friends who are interested in ajax can refer to the detailed explanation of JQuery AJAX parameters and attaches examples

context

Type: Object

This object is used to set the context of Ajax-related callback functions. In other words, let this in the callback function point to this object (if this parameter is not set, then this will point to the options parameter passed when calling this AJAX request). For example, specifying a DOM element as the context parameter will set the context of the success callback function to this DOM element.

Like this:

$.ajax({ url: "test.html", context: document.body, success: function(){
$(this).addClass ("done");
}});

jsonpCallback

Type: String

Specify a callback function name for the jsonp request. This value will be used instead of the random function name automatically generated by jQuery. This is mainly used to allow jQuery to generate unique function names so that it is easier to manage requests and provide callback functions and error handling. You can also specify this callback function name when you want the browser to cache GET requests.

xhr

Type: Function

Needs to return an XMLHttpRequest object. The default is ActiveXObject under IE and XMLHttpRequest otherwise. Used to override or provide an enhanced XMLHttpRequest object. This parameter was not available before jQuery 1.3.

timeout

Type: Number

Set the request timeout (milliseconds). This setting overrides the global setting.

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