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$ .ajax回调函数中的范围

如果我使用此代码,为什么"doStuff"警报的范围已更改?有没有办法确保范围是我的对象而不是Window对象?

这是jsfiddle中的相同代码.

(function ($) {
    var c$ = {};

    c$.TestScope = function () {

        this.doAjax = function (onComplete) {
            var self = this;
            $.ajax({
                url: 'badurl',
                complete: function (data) {
                    alert('doAjax2 self === c$.oTestScope: ' + (self === c$.oTestScope).toString());
                    onComplete(data);
                }
            });
            alert('doAjax1 self === c$.oTestScope: ' + (self === c$.oTestScope).toString());  
        };

        this.doStuff = function (data) {
            var self = this;
            alert('doStuff self === c$.oTestScope: ' + (self === c$.oTestScope).toString());
        }

    };

    c$.oTestScope = new c$.TestScope();
    c$.oTestScope.doAjax(c$.oTestScope.doStuff);
})(jQuery);?
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ajax jquery scope callback

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