Jquery ajax:传递范围来设置它

Question

我有这个带有这个ajax调用的类:

Person = function(){

    this.__type = "PersonDto:#Empower.Service.Common.Dto";
    this.Name = undefined;
    this.Surname = undefined;

    this.GetById = function (id) {
        return $.ajax({
            type: "POST",
            url: "/Services/PersonService.svc/GetPersonById",
            data: JSON.stringify(id),
            contentType: "application/json; charset=utf-8",
            dataType: "json",
            success: function (data) {
                ...
                this = data;
                ...
            }
        });
    }
};

在ajax调用成功时,我想设置当前的person实例,但"this"对于设置不是正确的范围.有一种比使用全局变量更优雅的方式吗？

提前感谢您的帮助,我为我糟糕的英语道歉

Answer 1

在jQuery.ajax()^[文档]方法给你一个context属性,您可以设置的值this的回调.

做就是了:

context: this,

......在你的电话中,如:

this.GetById = function (id) {
    return $.ajax({
        type: "POST",
        context: this,  // <---- context property to set "this" in the callbacks
        url: "/Services/PersonService.svc/GetPersonById",
        data: JSON.stringify(id),
        contentType: "application/json; charset=utf-8",
        dataType: "json",
        success: function (data) {

             // in here, "this" will be the same as in your "getById" method

        }
    });
}