简单教程
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代码编辑器:
<!DOCTYPE html> <meta charset="utf-8"> <link href="/static/next/css/tryit.css?v=2017082407" rel="stylesheet"/> <script src="https://cdn.staticfile.org/jquery/2.2.4/jquery.min.js"></script> <span></span> <script> $(function () { var keys =$.map( [0, 1, 52, 97], function (a) { return (a > 50 ? a - 45 : null); }); $("span").text(keys.join(", ")); }) </script> <footer>简单教程,简单编程<br/>Copyright © 简单教程 www.twle.cn</footer>
运行结果: