JS模擬VBS的space函數和string函數

<script language="javascript">

function space(n)
{
  var arr = new Array(n+1);
  return arr.join(" ");
}

function string(char, n)
{
  var arr = new Array(n+1);
  return arr.join(char);
}

alert("a" + space(5) + "a")
alert("a" + string("+", 7) + "a")

</script>