xxxxxxxxxx<html><head><meta charset="utf-8"><title>W3Cschool教程(w3cschool.cn)</title></head><body><p> Internet Explorer 8 及更早IE版本不支持addEventListener() 方法。</p><p>该实例演示了所有浏览器兼容的解决方法。</p><button id="myBtn">点我</button><script>var x = document.getElementById("myBtn");if (x.addEventListener) { x.addEventListener("click", myFunction);} else if (x.attachEvent) { x.attachEvent("onclick", myFunction);}function myFunction() { alert("Hello World!");}</script></body></html>