jQuery $.each的用法说明

var arr1 = [ "a", "b", "c", "d", "e" ]; 
$.each(arr1, function(){ 
alert(this); 
}); 
 

var arr2 = [[1, 2, 3], [4, 5, 6], [7, 8, 9]] 
$.each(arr2, function(i, item){ 
alert(item[0]); 
}); 
 

var obj = { one:1, two:2, three:3, four:4, five:5 }; 
$.each(obj, function(key, val) { 
alert(obj[key]); 
});