js 动画函数封装

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我是靠谱客的博主务实发箍，这篇文章主要介绍js 动画函数封装，现在分享给大家，希望可以做个参考。

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
div {
position: absolute;
left: 0;
width: 100px;
height: 100px;
background-color: #ccc;
}
span {
position: absolute;
left: 0;
top: 200px;
display: block;
width: 150px;
height: 150px;
background-color: purple;
}
</style>
</head>
<body>
<button>点击2号盒子</button>
<div></div>
<span>2号盒子
</span>
<script>
function animate(obj, target) {
clearInterval(obj.timer) //清除定时器 避免多次运行
obj.timer = setInterval(function() { //设定定时器
if (obj.offsetLeft >= target) { //判断是否超出目标值
clearInterval(obj.timer); //清除定时器
} else {
obj.style.left = obj.offsetLeft + 1 + 'px'; //元素的left 每次加一
}
}, 30) //间隔时间
}
var div = document.querySelector('div'); // 获取元素
var span = document.querySelector('span');
var btn = document.querySelector('button');
animate(div, 300);
btn.addEventListener('click', function() {
animate(span, 200);
})
</script>
</body>
</html>

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
div {
position: absolute;
left: 0;
width: 100px;
height: 100px;
background-color: #ccc;
}
span {
position: absolute;
left: 0;
top: 200px;
display: block;
width: 150px;
height: 150px;
background-color: purple;
}
</style>
</head>
<body>
<button>点击2号盒子</button>
<div></div>
<span>2号盒子
</span>
<script>
function animate(obj, target) {
clearInterval(obj.timer) //清除定时器 避免多次运行
obj.timer = setInterval(function() { //设定定时器
if (obj.offsetLeft >= target) { //判断是否超出目标值
clearInterval(obj.timer); //清除定时器
} else {
obj.style.left = obj.offsetLeft + 1 + 'px'; //元素的left 每次加一
}
}, 30) //间隔时间
}
var div = document.querySelector('div'); // 获取元素
var span = document.querySelector('span');
var btn = document.querySelector('button');
animate(div, 300);
btn.addEventListener('click', function() {
animate(span, 200);
})
</script>
</body>
</html>