var arr = ["科比","麦迪","卡特","小艾"] ;
$.each(arr,function(){
alert(this) ;
});
var arr = ["科比","麦迪","卡特","小艾"] ;
$.each(arr,function(i,value){
if(i==2){
alert(value) ;
}
});
var arr = [["24","科比"], ["1","麦迪"], ["15","卡特"],["3","小艾"]]
$.each(arr,function(i,value){
alert(value) ;
alert(value[1]) ;
});
var obj = {"24":"科比","1":"麦迪","15":"卡特"}
$.each(obj,function(key,value){
alert(key) ;
alert(value) ;
alert(obj[key]);
});
原文：http://www.cnblogs.com/yaoxiaoxing/p/5145053.html