var ss = function(){ this.str = 'str'; return new String('china'); } var test = new ss(); alert(test);//输出china alert(test.str);//输出str ---------------------------------- var ss = function(){ this.str = 'str'; } var test = new ss(); alert(test);//输出[object] alert(test.str);//输出str
String L@_@K var ss = "china"; alert(ss.constructor);
this.str = 'str';
return new String('china');
}
var test = new ss();
alert(test);//输出china
alert(test.str);//输出str
----------------------------------
var ss = function(){
this.str = 'str';
}
var test = new ss();
alert(test);//输出[object]
alert(test.str);//输出str
L@_@K
var ss = "china";
alert(ss.constructor);