<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>純js(不依賴現(xiàn)有框架)焦點(diǎn)文字滾動(dòng)效果</title>
<style >
*{margin:0;padding:0; list-style:none;}

#slider{overflow:hidden;width:470px;height:150px;position:relative; margin:100px auto;}
#slider .pics{width:470px;height:150px}
#slider .pics li{height:150px;width:470px;float:left}
#slider #nav {position:absolute;bottom:5px;right:5px;}
#slider #nav li.nav{background:#F47500; color:#fff;}
#slider #nav li{border:1px solid #f47500; color:#d94b01; cursor:pointer;background:#fff;font-size:12px; height:15px;width:15px;float:left;margin-left:4px;display:inline;text-align:center}
</style>
</head>
<body>

<!--代碼部分begin-->
<div id="slider">
 <ul class="pics">
 <li><img alt="js焦點(diǎn)圖效果" src="images/01.jpg" /></li>
 <li><img alt="js焦點(diǎn)圖效果" src="images/02.jpg" /></li>
 <li><img alt="js焦點(diǎn)圖效果" src="images/03.jpg" /></li>
 <li><img alt="js焦點(diǎn)圖效果" src="images/04.jpg" /></li>
 <li><img alt="js焦點(diǎn)圖效果" src="images/05.jpg" /></li>
 </ul>
 <ul id="nav">
 <li onmouseover="setTimeout(function(){lanrenzhijia.slider.pos(0)},300)">1</li>
 <li onmouseover="setTimeout(function(){lanrenzhijia.slider.pos(1)},300)">2</li>
 <li onmouseover="setTimeout(function(){lanrenzhijia.slider.pos(2)},300)">3</li>
 <li onmouseover="setTimeout(function(){lanrenzhijia.slider.pos(3)},300)">4</li>
 <li onmouseover="setTimeout(function(){lanrenzhijia.slider.pos(4)},300)">5</li>
 </ul>
</div>
<script>
var lanrenzhijia = {}, H$ = function(id){return document.getElementById(id)}, H$$ = function(c,p){return p.getElementsByTagName(c)}
lanrenzhijia.slider = function(){
 return{
 init:function(id,options){
  var ul = this.u = H$$('ul',H$(id))[0], li = H$$('li',ul); this.l=li.length; this.index = 0;
  if(options.navId&&options.curClass){this.nav = H$$('li',H$(options.navId)), this.c = options.curClass;}
  this.a=options.auto||0; this.v=options.vertical||0;H$(id).style.overflow = 'hidden';H$(id).style.position = 'relative';ul.style.position='absolute';
  if(this.v){ul.style.top=0; this.h=options.height||li[0].offsetHeight; ul.style.height=(this.l*this.h)+'px';}
  else{ul.style.left=0; this.w=options.width||li[0].offsetWidth; ul.style.width=(this.l*this.w)+'px';}
  this.pos(options.index||0,this.a?1:0);
 },
 
 pos:function(pos,a){
  clearInterval(this.u.posAnim); clearInterval(this.u.auto);
  var curPos=this.v?parseInt(this.u.style.top):parseInt(this.u.style.left),
  correctPos=this.v?pos*this.h:pos*this.w, 
  direction = correctPos>Math.abs(curPos)?1:-1;
  correctPos*=-1; 
  this.index = pos;
  if(this.nav){for(var i=0;i<this.l;i++){this.nav[i].className = i==pos?this.c:''}}
  this.u.posAnim = setInterval(function(){lanrenzhijia.slider.anim(correctPos,direction,a)},10);
 },
 
 anim:function(des,dir,a){
  var curPos=this.v?parseInt(this.u.style.top):parseInt(this.u.style.left);
  if(curPos == des){
  clearInterval(this.u.posAnim);
  if(a||this.a){lanrenzhijia.slider.auto()}
  }
  else{
  var v=curPos-Math.ceil(Math.abs(des-curPos)*.07)*dir+'px';
  this.v?this.u.style.top=v:this.u.style.left=v;
  }
 },
 
 auto:function(){
  this.u.auto=setInterval(function(){lanrenzhijia.slider.move(1,1)},this.a*1000)
 },
 
 move:function(n,a){
  var num=this.index+n, i=n==1?num==this.l?0:num:num<0?this.l-1:num; lanrenzhijia.slider.pos(i,a);
 }
 };
}();
</script>
<script>
lanrenzhijia.slider.init('slider',{ 
 auto:3,
 vertical:1,
 navId:'nav',
 curClass:'nav',
 index:0});
</script>
<!--代碼部分end-->

</body>
</html>

以上就是為大家分享的js(不依賴現(xiàn)有框架)焦點(diǎn)文字滾動(dòng)效果代碼，希望大家可以喜歡。

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