Javascript 如何在ajax中将上下文传递到done

以下是场景：

getSomething: function(){
    var gotValue = sendAjax();
    gotValue.done(function(response){
        console.log(response); //How to pass context of object to call getSomethingElse
        //getSomethingElse();
    });
},
getSomethingElse : function(){
}

---

我想在ajax的done方法中调用getSomethingElse函数

使用

$this=this因为函数中的
此
不是指对象

getSomething: function()
{
var $this = this;
var gotValue = sendAjax();
gotValue.done(function(response){
   console.log(response);
   $this.getSomethingElse();
});
},
getSomethingElse : function()
{
}

或者你可以使用

使用对当前上下文的引用：

getSomething: function () {
    var self = this;
    sendAjax().done(function (response) {
        self.getSomethingElse(response);
    });
    // or even shorter: sendAjax().done(self.getSomethingElse);
},
getSomethingElse: function () {}

使用方法：

试试这个：

var someHelper = {

    getSomething : function() {

        var gotValue = sendAjax();

        //keep a reference to the obj, normally "this", or "someHelper" 
        var self = this; 

        gotValue.done(function(response) {

            console.log(response); //How to pass context of object to call getSomethingElse
            //getSomethingElse();

            //call getSomethingElse
            self.getSomethingElse();
        });
    },
    getSomethingElse : function() {

    }
}

可以使用apply、call传递对象引用。如果您总是想获取某些引用调用的东西，请使用绑定可能的副本
getSomething: function () {
    sendAjax().done(function (response) {
        this.getSomethingElse(response);
    }.bind(this));
},
getSomethingElse: function () {}

var someHelper = {

    getSomething : function() {

        var gotValue = sendAjax();

        //keep a reference to the obj, normally "this", or "someHelper" 
        var self = this; 

        gotValue.done(function(response) {

            console.log(response); //How to pass context of object to call getSomethingElse
            //getSomethingElse();

            //call getSomethingElse
            self.getSomethingElse();
        });
    },
    getSomethingElse : function() {

    }
}