Trouble with Jquery widget

Question

我有这样的小部件

$.widget("ui.myWidget", {
    //default options
    options: {
        myOptions: "test"
    },
    _create: function () {
        this.self = $(this.element[0]);
        this.self.find("thead th").click(function () {
            this.self._headerClick(); //how do I do this!!!
        });
        this.self._somethingElse();
    },
    _headerClick: function (){
    },
    _somethingElse: function (){
    },
.
.
.

该行this.self._headerClick();引发错误。这是因为在该上下文中，this是单击的th元素。如何获取对_headerClick函数的引用？

Answer 1

将所需this的范围存储在变量中。

$.widget("ui.myWidget", {
    //default options
    options: {
        myOptions: "test"
    },
    _create: function () {
        var that = this; // that will be accessible to .click(...
        this.self = $(this.element[0]);
        this.self.find("thead th").click(function () {
            that._headerClick(); //how do I do this!!!
        });
        this.self._somethingElse();
    },
    _headerClick: function (){
    },
    _somethingElse: function (){
    },

Answer 2

未经测试，但可能是这样的：

_create: function () {
    var self = this,
        $elem = $(self.element[0]);
    $elem.find("thead th").click(function() {
        self._headerClick();
    });
    self._somethingElse();
},