jquery遍历数组的方式

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1，for循环：

var arr = new Array(13.5,3,4,5,6);

for(var i=0;i<arr.length;i++){

 arr[i] = arr[i]/2.0;

}

2，for,in循环：

var x

var mycars = new Array()

mycars[0] = "Saab"

mycars[1] = "Volvo"

mycars[2] = "BMW"

for (x in mycars)

{

  document.write(mycars[x] + "<br />")

}

3，each遍历一维数组：

var arr=new Array();

arr=["aaa","bbb","ccc"];

$.each(arr,function(index,value){

     alert(i+"..."+value);

});

4，each遍历二维数组：

$(function () {

    $.each([["aaa", "bbb", "ccc"], ["ddd", "eee", "fff"], ["ggg", "hhh", "iii"]], function (index, item) {

         alert(index + "..." + item);

         //输出0...aaa,bbb,ccc  1...ddd,eee,fff  2...ggg,hhh,iii   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);

         });

    });

     //输出0...aaa,bbb,ccc  0...aaa 1...bbb 2...cccc  1...ddd,eee,fff  0...ddd 1...eee 2...fff  2...ggg,hhh,iii 0...ggg 1...hhh 2...iii

 });