the best easy way to show many same word using javascript

i want to show mant 's' , so my code is :

alert('s'*3)

but it is not running good ,

so i have to :

    var str='';
    for(var i=0;i<3;i++)
  开发者_运维问答  str+='s'
    alert(str)

but it is not easy ,

so did you know some more easy way to show many same word ?

thanks

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Here is a nice function: http://rosettacode.org/wiki/Repeat_a_string#JavaScript

String.prototype.repeat = function(n) {
    return new Array(1 + parseInt(n, 10)).join(this);
}

alert("ha".repeat(5));  // hahahahaha

---

I usually don't like phpJS much, but they have a very nice 1-line implementation of PHP's str_repeat().

If you use the function shown there, you can do a

alert(str_repeat('s', 3));

or if you don't want to copy over the function, steal its contents. This works standalone:

alert(new Array(4).join("s"));

---

Why not to make a function, that doing your long code variant?

function mult_str(str, count) {
   var res = '';
   for (var i = 0; i < count; i++) {
       res += str;
   }
   return res;
}
alert(mult_str('s', 3));