jQuery ajax类的回调成员? [英] jQuery ajax callback member of class?

问题描述

可能重复:

Possible Duplicate:
Is there a way for a JQuery ajax success function to access the object it’s contained in?

我有一些类似的代码

myClass.prototype.doStuff = function(){

  $.ajax({
        type: 'POST',
        url: $('#form').attr('action'),
        data: $('#form').serialize(),
        success: this.callback
  });
};

myClass.prototype.callback = function(data){
   if(this.someFlag){
     //do some stuff  
   }

};

在这种情况下，我以为this是myClass的实例，但实际上不是.为什么会这样?

In this case I supposed this to be the instance of myClass, but it isn't actually. Why is that?

推荐答案

将 context: this 作为ajax选项传递

Pass context: this as an ajax option.

该对象将成为所有与Ajax相关的回调的上下文.默认情况下，上下文是一个对象，代表调用中使用的ajax设置($.ajaxSettings与传递给$.ajax的设置合并).

This object will be made the context of all Ajax-related callbacks. By default, the context is an object that represents the ajax settings used in the call ($.ajaxSettings merged with the settings passed to $.ajax).

$.ajax({
    type: 'POST',
    url: $('#form').attr('action'),
    data: $('#form').serialize(),
    context: this,
    success: this.callback
});

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