js 数组排序sort方法

<script type="text/javascript">  function sortNumber(a,b) { return a - b }  var arr = new Array(6) arr[0] = "10" arr[1] = "5" arr[2] = "40" arr[3] = "25" arr[4] = "1000" arr[5] = "1"  document.write(arr + "<br />") document.write(arr.sort(sortNumber))  </script>

输出：

10,5,40,25,1000,1 1,5,10,25,40,1000