jQuery each()小议_jquery

Copy code The code is as follows:

var arr1 = [ "one", "two", "three" , "four", "five" ];
$.each(arr1, function(){
alert(this);
});

Output: one two three four five

Copy code The code is as follows:

var arr2 = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]
$.each(arr2, function(i, item){ The name of the parameter can be defined by yourself, and the each method will be based on the first parameter (arr2) format to determine the correctness of the callback function method body syntax
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]);
});

Output: 1 2 3 4 5

Copy code The code is as follows:

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

Bounce traversal

Copy code The code is as follows:

$(document).ready(
function test()
{ var index=0;
var arr1 = [[1, 4, 3 ], [4, 6, 6], [7, 20, 9]]
$.each(arr1, function(i,item){
if(i==1)
{
alert("Click to continue the next traversal");
return ; //return false ; then jump out of the traversal
}
alert('index' i '_' item[0]);
});
})