map : function(fun )
{
var len = this.length >>> 0;
- if (typeof fun != "function")
+ if (typeof fun != "function") {
throw new TypeError();
-
+ }
var res = new Array(len);
var thisp = arguments[1];
for (var i = 0; i < len; i++)
{
- if (i in this)
+ if (i in this) {
res[i] = fun.call(thisp, this[i], i, this);
+ }
}
return res;