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<!DOCTYPE html> <html> <body> <h3>��ʾ��δ��� SCRIPT Ԫ��</h3> <p>�����ť��������� "Hello World!" �� SCRIPT Ԫ�ء�</p> <button onclick="myFunction()">��һ��</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>