<!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;
width: 200px;
height: 200px;
background-color: pink;
}
span {
position: absolute;
left: 0;
top: 200px;
display: block;
width: 150px;
height: 150px;
background-color: plum;
}
</style>
</head>
<body>
<div></div>
<span>111</span>
<script>
// var obj = {};
// obj.name = 'andy'
// 简单动画函数封装obj目标对象，target目标位置
// 给不同的元素指定不同的定时器
function animate(obj, target) {
obj.timer = setInterval(function () {
if (obj.offsetLeft >= target) {
// 停止动画
clearInterval(obj.timer);
}
obj.style.left = obj.offsetLeft + 1 + 'px';
}, 30)
}
var div = document.querySelector('div')
var span = document.querySelector('span')
// 调用函数
animate(div, 300);
animate(span, 200);
</script>
</body>
</html>