在线运行代码 - 菜鸟教程

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>菜鸟教程(cainiaoplay.com)</title>
<script src="https://cdn.staticfile.org/jquery/1.10.2/jquery.min.js"></script>
</head>
<body>
	
<script>
$(function () { 
	$.each( [ "a", "b", "c" ], function( i, l ){
		alert( "下标 #" + i + ": " + l );
	});
})
</script>
 
</body>
</html>

源代码

动行结果