有没有办法从数组尾部向前遍历?
var AllNodeList = new Array();
AllNodeList[3] = 3;
AllNodeList[2] = 2;
AllNodeList[1] = 1;
AllNodeList[5] = 5;
AllNodeList["a"] = "a";
AllNodeList[0] = 0;
for(var p in AllNodeList) alert(p);
我想从0,a,5,1,2,3遍历而不是3,2,1,5,a,0,能否不借助别的数组什么的,直接就可以倒着遍历?