jquery遍历数组

jquery遍历数组

for遍历：

var arr = new Array(1,2,3,4,5,6);
for(var i=0;i<arr.length;i++){
 arr[i] ;
}

for in 遍历：

var x;
var arr = new Array(1,2,3,4,5,6);
for (x in arr )
{
  arr [x];
}

each遍历一维数组：

var arr=["1","2","3"];
$.each(arr,function(index,value){
     alert(index+"..."+value);
});

each遍历二维数组：

$(function () {
    $.each([["1", "2", "3"], ["4", "5", "6"], ["7", "8", "9"]], function (index, item) {
         alert(index + ":" + item);
         //输出0:1,2,3 ...1:4,5,6...2:7,8,9
         //这时的index为数组下标,item相当于取这二维数组中的每一个数组
         $.each(item, function (index, itemobj) {
              alert(index + ":" + itemobj);
         });
    });
 });