无缝跑马灯
- 把内容复制一份一模一样的放在后面
- 当conEnd的开头运动到外层盒子开头的时候, 让scrollLeft瞬间设置为0, 即scrollLeft的值为 conBegin的盒子宽度
代码
<!--
* @Author: lemon
* @Date: 2020-09-13 18:39:32
* @LastEditTime: 2020-09-13 20:00:32
* @LastEditors: Please set LastEditors
* @Description: In User Settings Edit
* @FilePath: React前端准备JS基础跑马灯.html
-->
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
<style type="text/css">
* {
margin: 0;
padding: 0;
font-family: "5FAE8F6F96C59ED1", Helvetica, sans-serif;
font-size: 14px;
-webkit-user-select: none;
}
#box {
margin: 50px auto;
padding: 0 10px;
1000px;
height: 35px;
line-height: 35px;
border: 5px soild lightgreen;
background-color: lightsalmon;
float: left;
}
#box {
white-space: nowrap;
overflow: hidden;
}
#warp div {
display: inline-block;
}
#box div span {
color: red;
font-weight: bold;
font-size: 16px;
}
</style>
</head>
<body>
<div id="box">
<div id="warp">
<div id="conBegin">
<span>通知：</span>
要得到你必须要付出，要付出你还要学会坚持，如果你真的觉得很难，那你就放弃，但是你放弃了就不要抱怨，我觉得人生就是这样，世界是公平的，每个人都是通过自己的努力，去决定自己生活的样子
</div>
<div id="conEnd">
<span>通知：</span>
要得到你必须要付出，要付出你还要学会坚持，如果你真的觉得很难，那你就放弃，但是你放弃了就不要抱怨，我觉得人生就是这样，世界是公平的，每个人都是通过自己的努力，去决定自己生活的样子
</div>
</div>
</div>
</body>
<script type="text/javascript">
var box = document.getElementById("box");
var conBegin = document.getElementById("conBegin");
var warp = document.getElementById("warp");
function move() {
var curLeft = box.scrollLeft;
var conBegin_width = parseInt(
window.getComputedStyle(conBegin, null).width
);
box.scrollLeft = curLeft + 1;
lastLeft = box.scrollLeft;
if (curLeft > conBegin_width) {
console.log(curLeft);
box.scrollLeft = 0;
}
}
var timer = window.setInterval(move, 10);
box.onmouseover = function () {
window.clearInterval(timer);
};
box.onmouseout = function () {
timer = window.setInterval(move, 10);
};
</script>
</html>