Jquery each用法

 var arr1 = [ "one", "two", "three", "four", "five" ];    
$.each(arr1, function(){    
     alert(this);    
});    
输出：one    two   three   four    five    
var arr2 = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]    
$.each(arr2, function(i, item){    
     alert(item[0]);    
});    
输出：1    4    7    
var obj = { one:1, two:2, three:3, four:4, five:5 };    
$.each(obj, function(key, val) {    
     alert(obj[key]);          
});    
输出：1    2   3   4   5   

$.each($("input:hidden"), function(){   
    alert(this.name); 
}); 
$.each($("input:hidden"), function(){   
    alert(this.value); 
}); 

 

 JQuery 的each 用法,收集一下