jsÖÐcallÊÇʲôÒâ˼

var a={

name:"a",

b:function(){

alert(this.name);

}

};

var c={

name :"c",

b:function(){

alert(this.name);

}

};

(function(){

a.b.call(c); //Ö¸¶¨º¯ÊýÌåÄÚthisµÄÖµ show "c"

})();