1.纵向无缝滚动（类似淘宝）
ps:存在一个问题，当鼠标移入时，未关闭定时器
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style type="text/css">
.box{
margin:100px auto;
border:1px solid #ccc;
width:170px;
height:42px;
line-height:20px;
overflow:hidden;
}
.box .content{
list-style-type:none;
margin:0;padding:0;
margin-left:6px;
}
/*系统支持ie8就选line-height:16px;，但不支持opera 否则选line-height:20px;*/
.box .content a{
font-size:12px;
line-height:16px;
}
</style>
</head>
<body>
<div class="box">
<div id="transverseRoll">
<div class="content">
<a href="http://www.zzjs.net/" target="_blank"><span style="color:#FF0000">滚动文字一号</span></a>
<a href="http://www.zzjs.net/" target="_blank"><span style="color:#FF0000">滚动文字二号</span></a>
</div>
<div class="content">
<a href="http://www.zzjs.net/" target="_blank">
<span style="color:#3333FF">滚动文字三号</span>
</a>
<a href="http://www.zzjs.net/" target="_blank">
<span style="color:#3333FF">滚动文字四号</span>
</a>
</div>
</div>
<script language="javascript">
function startmarquee(lh,speed,delay) {//lh-高度，speed 时间，
var bFlag = false;
var timer = null;
var _timer = null;
var obj = document.getElementById("transverseRoll");//获取滚动元素
obj.innerHTML += obj.innerHTML;//滚动元素的内容为2倍自己的内容
obj.style.marginTop = 0;
obj.onmouseover=function(){ bFlag = true;}//鼠标移入
obj.onmouseout=function(){ bFlag = false;}//鼠标移出
function start(){
clearInterval(timer);
timer = setInterval(scrolling,speed);
if(!bFlag) obj.style.marginTop=parseInt(obj.style.marginTop) - 1 + "px";
console.log('setTimeout:',obj.style.marginTop);
}
function scrolling(){
if(parseInt(obj.style.marginTop) % lh != 0){
obj.style.marginTop = parseInt(obj.style.marginTop) - 1 + "px";//滚动物体的marginTop >= 它的滚动高度/2 比如 |-40| >= 80/2 →→→→→→→→→→ 0 % 20 = 0
if(Math.abs(parseInt(obj.style.marginTop)) >= obj.scrollHeight / 2 ) obj.style.marginTop = 0;
}else{
clearInterval(timer);
clearTimeout(_timer);
setTimeout(start,delay);
}
}
clearTimeout(_timer);
setTimeout(start,delay);
}
startmarquee(20,20,1500);
</script>
</body>
</html>
2.横向无缝滚动（angularjs）
ps:走马灯效果
<!DOCTYPE html>
<html>
<head>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type" />
<script src="https://cdn.bootcss.com/angular.js/1.6.7/angular.min.js"></script>
<style>
.transverseRoll {
white-space: nowrap;
overflow: hidden;
width: 38%;
margin: 3px auto;
padding: 10px 20px 15px 0px;
position: fixed;
left: 5%;
color: white;
background-color: black;
z-index: 1;
}
</style>
<script>
var app = angular.module("myApp", []);
app.directive("transverseRolling", function ($interval) {
return {
restrict: 'A',
link: function (scope, element, attrs) {
var timer = null;
var scroll = function (obj) {
//获取滚动条到元素左边的距离
var tmp = (obj.scrollLeft)++;
if (obj.scrollLeft == tmp) {
//当滚动条到达右边顶端时,将文字追加在元素末尾
obj.innerHTML += "    " + obj.innerHTML;
}
if (obj.scrollLeft >= obj.offsetWidth) {
//当滚动条滚动了初始内容的宽度时滚动条回到最左端
obj.scrollLeft = 0;
}
}
var _scroll = function(param) {
//将滚动条位置向右移动一个像素,计算滚动条是否到达右侧尽头
return function () {
scroll(param);
};
}
var mouseover = function () {
//鼠标移入时取消滚动效果
$interval.cancel(timer);
}
var _mouseout = function(target) {
//鼠标移出事件,设置滚动效果
return function () {
if (target) {
timer = $interval(_scroll(target), 20);
}
};
}
// 设置滚动效果
timer = $interval(_scroll(element[0]), 20);
//给指令所在的div添加鼠标移入移出事件监听
element[0].addEventListener("mouseover", mouseover);
element[0].addEventListener("mouseout", _mouseout(element[0]));
}
}
});
</script>
</head>
<body ng-app="myApp" >
<div transverse-rolling class="transverseRoll">使用angularjs搭建项目，实现无缝滚动效果，主旨是：使用计时器和滚动距离实现的。</div>
</body>
</html>作者：smile.轉角
QQ：493177502