jQuery ajaxSetup() method

jQuery AJAX Methods

$ .ajaxSetup() method sets default values for future Ajax requests.

Unless overridden by individual calls, all subsequent Ajax calls using any method will use the new settings until the next call to $ .ajaxSetup().

Syntax:

$.ajaxSetup({name:value,  name:value,  ...})

Instance

Set the default URL for all AJAX requests:

$.ajaxSetup({
　　url:  "ajax_post.php"
});
//Now, every time an Ajax request is made, the URL "  ajax_post.php" will be used automatically:
$.ajax({
　　data:  {fname:"Seagull",  lname:"Anna"},
　　method:  "POST",
　　success: function(response){
　　　　$("div").html(response);
　　}
});

Set default URL and success function for all AJAX requests:

$.ajaxSetup({
　　url:  "ajax_data.txt",
　　success: function(response){
　　　　$("div").html(response);
　　}
});
$("button").click(function(){
　　$.ajax();
});

If an Ajax request encounters an error, a notification will be displayed:

$.ajaxSetup({
　　url:  "wrong_file.html",
　　success: function(response){
　　　　$("div").html(response);
　　},
　　error: function(xhr){
　　　　$("div").html("An error occurred:  "　+　xhr.status　+　"  "　+　xhr.statusText);
　　}
});
$("button").click(function(){
　　$.ajax();
});

Note:The settings specified here will affect the calls to$.ajaxor derived classes based on Ajax (such asof $.get()）All calls. Since other callers (such as plugins) may expect to use normal default settings, this may lead to undesirable behavior. Therefore,It is strongly recommended not to use the $.ajaxSetup() method. Instead, set options explicitly in the call or define a simple plugin.

Parameter values

The parameters use one or more name:value pairs to specify the settings for the AJAX request.

Possible names: values in the following table:

$.ajax({
　　statusCode:{
　　　　404:function()
　　　　　　alert('Page not found');
　　　　}
　　}
});

jQuery AJAX Methods