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<!DOCTYPE html> <html> <body> <p>此示例演示如何将“onload”事件分配给 iframe 元素。</p> <iframe onload="myFunction()" src="/default.asp"></iframe> <p id="demo"></p> <script> function myFunction() { document.getElementById("demo").innerHTML = "iframe 已加载。"; } </script> </body> </html>