直接上代码：
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html> ???<head> ???????<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> ???????<title>JavaScript事件</title> ???????????????</head> ???<body> ???????????????<p>示例使用 addEventListener() 方法在同一个按钮中添加多个事件。</p> ???????<button id="myBtn">点我</button> ???????<p id="demo"></p> ???????<script> ???????var obj = document.getElementById("myBtn"); ???????obj.addEventListener("mouseover", myFunction); ???????obj.addEventListener("click", mySecondFunction); ???????obj.addEventListener("mouseout", myThirdFunction); ???????function myFunction() { ???????????document.getElementById("demo").innerHTML += "Moused over!<br>" ???????} ???????function mySecondFunction() { ???????????document.getElementById("demo").innerHTML += "Clicked!<br>" ???????} ???????function myThirdFunction() { ???????????document.getElementById("demo").innerHTML += "Moused out!<br>" ???????} ???????</script> ???</body></html>js事件学习的小demo
原文地址：https://www.cnblogs.com/moonsoft/p/10455028.html