reverse 方法反转 Array 内的元素

 1     <script>
 2         var arr = new Array();
 3         arr[0] = "father";
 4         arr[1] = "mother";
 5         window.onload = function(){
 6             var div1 = document.getElementById("div1");
 7             var div2 = document.getElementById("div2");
 8             div1.innerHTML = arr;
 9             div2.innerHTML = arr.reverse();
10         }
11     </script>