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代码编辑器：

<style>
#myDIV {
    margin: 25px;
    width: 550px;
    height: 100px;
    background: orange;
    position: relative;
    font-size: 20px;
}
/* Chrome, Safari, Opera */
@-webkit-keyframes mymove {
    from {top: 0px;}
    to {top: 200px;}
}
@keyframes mymove {
    from {top: 0px;}
    to {top: 200px;}
}
</style>
<p>该范例使用了 addEventListener() 方法为 DIV 元素添加"animationstart", "animationiteration" 和 "animationend" 事件</p>
<div id="myDIV" onclick="myFunction()">点我开始动画</div>
<script>
var x = document.getElementById("myDIV")
// 使用 JavaScript 开始动画
function myFunction() {
    x.style.WebkitAnimation = "mymove 4s 2"; // Chrome, Safari 和 Opera 代码
    x.style.animation = "mymove 4s 2";
}
//  Chrome, Safari 和 Opera
x.addEventListener("webkitAnimationStart", myStartFunction);
x.addEventListener("webkitAnimationIteration", myIterationFunction);
x.addEventListener("webkitAnimationEnd", myEndFunction);
x.addEventListener("animationstart", myStartFunction);
x.addEventListener("animationiteration", myIterationFunction);
x.addEventListener("animationend", myEndFunction);
function myStartFunction() {
    this.innerHTML = "animationstart 事件触发 - 动画已经开始";
    this.style.backgroundColor = "pink";
}
function myIterationFunction() {
    this.innerHTML = "animationiteration 事件触发 - 动画重新播放";
    this.style.backgroundColor = "lightblue";
}
function myEndFunction() {
    this.innerHTML = "animationend 事件触发 - 动画已经完成";
    this.style.backgroundColor = "lightgray";
}
</script>

运行结果：