W3Schools 在线编辑工具（TIY） V3.0
编辑的代码:
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<html> <head> <script type="text/javascript" src="/jquery/jquery.js"></script> <script type="text/javascript"> $(document).ready(function(){ $("button").click(function(){ $("p").html("W3Schools"); }); }); </script> </head> <body> <h2>This is a heading</h2> <p>This is a paragraph.</p> <p>This is another paragraph.</p> <button type="button">请点击这里</button> </body> </html>