jQuery $.each usage instructions_jquery

Copy code The code is as follows:

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

Output: a b c d e

Copy code The code is as follows:

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

Output: 1 4 7

Copy code The code is as follows:

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

jQuery each() brief discussion