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<!DOCTYPE html> <html> <body> <p>Internet Explorer 8 及更早版本不支持 removeEventListener() 方法。</p> <p>此示例演示了适用于所有浏览器的解决方案。</p> <p>本文档有一个 onmousemove 事件处理程序，它附加了 addEventListener() 方法，每次您在本文档中移动鼠标时都会显示一个随机数。</p> <p>单击按钮以删除事件处理程序。</p> <button onclick="removeHandler()" id="myBtn">试一试</button> <p id="demo"></p> <script> if (document.addEventListener) { document.addEventListener("mousemove", myFunction); } else if (document.attachEvent) { document.attachEvent("onmousemove", myFunction); } function myFunction() { document.getElementById("demo").innerHTML = Math.random(); } function removeHandler() { if (document.removeEventListener) { document.removeEventListener("mousemove", myFunction); } else if (document.detachEvent) { document.detachEvent("onmousemove", myFunction); } } </script> </body> </html>