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<!DOCTYPE html> <html> <body> <p>单击该按钮以在框架中创建一个带有 begtut.com 的 IFRAME 元素。</p> <button onclick="myFunction()">试一试</button> <script> function myFunction() { var x = document.createElement("IFRAME"); x.setAttribute("src", "https://www.begtut.com"); document.body.appendChild(x); } </script> </body> </html>