原文地址:http://blog.ops.cc/webtech/javascript/f5nhm.html
<body> <script>var iframe = document.createElement("IFRAME"); document.body.appendChild(iframe); iframe.src = "http://www.ops.cc"; if (iframe.attachEvent) { iframe.attachEvent("onload", function () { alert("Local iframe is now loaded."); }); } else { iframe.onload = function () { alert("Local iframe is now loaded."); }; } </script> </body>