javascript - jQuery 访问父对象属性？

Question

所以我有这个代码:

function theObject(){
    this.someelement = $("#someelement");
    this.someotherelement = $("someotherelement");
    this.someelement.fadeOut(500, function(){
       this.someotherelement.attr("title", "something");
       this.someelement.fadeIn(500); 
    });
}

由于某种原因，this.someotherelement未定义。我猜是因为它被封装在 function(){} 中？

Answer 1

在函数内部this意味着别的东西。不过你可以捕获它:

this.someotherelement = $("someotherelement");
var _this = this;
this.someelement.fadeOut(500, function(){
   _this.someotherelement.attr("title", "something");
   _this.someelement.fadeIn(500); 
});