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window.XX = window.XX || {};
XX.Fx = XX.Fx || {};
/*
走马灯构造函数;
参数elem:要进行包装的dom元素,即包装后,其内部元素会实现走马灯效果
opts:JSON格式的数据,可传入的参数包括:
{
speed //滚动速度,以毫秒为单位,默认为1000
step //滚动像素, 默认为5
direction //滚动方向,包括'left', 'right', 'top', 'bottom',默认'left'
}
*/
XX.Fx.Marquee = function(elem, opts){
opts = opts || {};
this.el = elem;
this.speed = opts.speed || 1000;
this.step = opts.step || 5;
var dir = this.direction = opts.direction || 'left';
if( dir !== 'left' && dir !== 'right' && dir !== 'top' && dir !== 'bottom') {
throw new Error('Constructor "XX.Fx.Marquee": direction of options must be "left","right","top","bottom"');
}
elem.style.overflow = 'hidden';
elem.style.whiteSpace = 'nowrap';
if(dir === 'right' || dir === 'bottom'){
this.step = - this.step ;
}
this.Offset = (dir === 'left' || dir === 'right') ? 'scrollLeft' : 'scrollTop';
this.size = parseInt((dir === 'left' || dir === 'right') ? elem.scrollWidth : elem.scrollHeight);
};
XX.Fx.Marquee.prototype.start = function(){
if(this.timer){
clearTimeout(this.timer);
}
this.el.innerHTML += this.el.innerHTML;
var that = this, speed = this.speed, step = this.step, offset = this.Offset, el = this.el, size = this.size, move = null;
switch (this.direction){
case 'right':
case 'bottom':
move = function(){
if(el[offset] > 0){
el[offset] += step;
setTimeout(move, speed)
} else{
el[offset] = that.size;
setTimeout(move, speed)
}
};
break;
default:
move = function(){
if(el[offset] < size){
el[offset] += step;
setTimeout(move, speed)
} else{
el[offset] = 0;
setTimeout(move, speed)
}
};
}
this.timer = setTimeout(move, speed);
};
XX.Fx.Marquee.prototype.stop = function(){
clearTimeout(this.timer);
};
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<style type="text/css">
body{margin:3px auto;text-align:center;}
</style>
<script type="text/javascript" src="xxFxMarquee.js"></script>
<script type="text/javascript">
window.onload = function(){
var m = new XX.Fx.Marquee(document.getElementById('textdiv'), {direction:'top', speed:20, step:1});
m.start();
};
</script>
<title>无标题文档</title>
</head>
<body>
<h3>js marquee 滚动效果演示</h3>
<div id="textdiv" style="border:1 solid #c0c0c0;text-align:left;width:650px;height:100px">
<h2>--------------------走马灯演示测试--------------------------</h2><br />
文字滚动测试1<br />
文字滚动测试2<br />
文字滚动测试3<br />
<br />
制作者:Exodia<br />
联系方式:QQ39942816<br />
<a href="http://blog.csdn.net/dxx1988">BLOG地址</a>
</div>
</body>
</html>
文字悬停效果,可以自己添加mouseover函数控制。
<style>
#s{ width:500px; border:1px solid #000; overflow:hidden;}
#s div{ width:1000px;}
#s #i span{ width:500px; display:block; float:left;}
</style>
<div id="s">
<div id="i">
<span id="t">要滚动的文字,滚啊滚,滚啊滚</span>
</div>
</div>
<script type="text/javascript">
var speed = 10
var s = document.getElementById("s")
var i = document.getElementById("i")
var t = document.getElementById("t")
var d
i.appendChild(t.cloneNode(true))
function scroll()
{
s.scrollLeft += 1
if(s.scrollLeft >= t.offsetWidth) s.scrollLeft = 0;
}
d = window.setInterval(scroll,speed)
s.onmouseover = function(){window.clearInterval(d)}
s.onmouseout = function(){d = window.setInterval(scroll,speed)}
</script>
<style>
#s{ width:500px; border:1px solid #000; overflow:hidden;}
#s div{ width:1000px;}
#s #i span{ width:500px; display:block; float:left;}
</style>
<div id="s">
<div id="i">
<span id="t">要滚动的文字,滚啊滚,滚啊滚</span>
</div>
</div>
<script type="text/javascript">
var speed = 10
var s = document.getElementById("s")
var i = document.getElementById("i")
var t = document.getElementById("t")
i.appendChild(t.cloneNode(true))
function scroll()
{
s.scrollLeft += 1
if(s.scrollLeft >= t.offsetWidth) s.scrollLeft = 0;
}
window.setInterval(scroll,speed)
</script>
<marquee onmouseout="this.start()" onmouseover="this.stop()">用来设置鼠标移出该区域时继续滚动</marquee>