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實例代碼( Tip: 登錄后體驗更佳 )
<!DOCTYPE html>
<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>该实例颜色了跨浏览器的解决方案。</p>
<p>点击文档的任意地方会弹出信息。</p>
<script>
if (document.addEventListener) {
    document.addEventListener("click", myFunction);
} else if (document.attachEvent) {
    document.attachEvent("onclick", myFunction);
}
function myFunction() {
    alert("Hello World!");
}
</script>
</body>
</html>
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