高手教程在线编辑器

AI 编程工具
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>高手教程(study.p2hp.com)</title>	
<script src="https://cdn.staticfile.net/jquery/1.10.2/jquery.min.js"></script>
</head>
<body>

<span></span>
<script>
$(function () { 
	var result = $.map( [1, 2, 3], $.noop );
	document.writeln( result.length ); // 0
})
</script>
 
</body>
</html>
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>高手教程(study.p2hp.com)</title> 
<script src="https://cdn.staticfile.net/jquery/1.10.2/jquery.min.js"></script>
</head>
<body>
​
<span></span>
<script>
$(function () { 
    var result = $.map( [1, 2, 3], $.noop );
    document.writeln( result.length ); // 0
})
</script>
 
</body>
</html>