<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>无缝滚动工作原理</title>
<style>
#div1 {
width: 100px;
height: 100px;
background: red;
position: absolute;
left: 0;
margin-top: 10px;
}
</style>
<script>
window.onload = function() {
var oDiv = document.getElementById('div1');
var oBtn1 = document.getElementById('btn1');
var oBtn2 = document.getElementById('btn2');
var timer = null;
oBtn1.onclick = function() {
timer = setInterval(function() {
oDiv.style.left = oDiv.offsetLeft + 5 + 'px';
}, 30);
};
oBtn2.onclick = function() {
clearTimeout(timer);
};
};
</script>
</head>
<body>
<input id="btn1" type="button" value="向右滚动">
<input id="btn2" type="button" value="停止滚动">
<div id="div1"></div>
</body>
</html>