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Tryit: JAVASCRIPT
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<!DOCTYPE html> <html> <body> <p>单击该按钮以创建一个 SCRIPT 元素，该元素会提示“Hello World!”。</p> <button onclick="myFunction()">试一试</button> <script> function myFunction() { var x = document.createElement("SCRIPT"); var t = document.createTextNode("alert('Hello World!')"); x.appendChild(t); document.body.appendChild(x); } </script> </body> </html>