自写Js+CSS轮显效果_图片特效特效

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自已写的JavaScript轮显切换效果，虽然还不是十分完美，但作为自己的一点小成就奉献给大家，示例里的文字可以换成图片，这样图片切换的效果就出来了。

<!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" mrc="text/html; charset=UTF-8" />
<title>JS图片轮显切换</title>
<style type="text/css">
*{ margin:0; padding:0}
#wapper{ position:relative;height:280px; width:316px; overflow:hidden}
#slideshow{width:316px; height:300px; overflow:hidden; position:relative;}
#imglist{width:1264px; height:100%; float:left; padding:0; margin:0;position:absolute; left:0}
#imglist li{ width:25%;height:100%; float:left}
#nextlist{position:absolute; z-index:9}
#nextlist li{ float:left; display:inline; height:30px; padding:10px 0; width:79px;}
#nextlist li.current{background:#c00}
#bg{ position:absolute; z-index:1;background:#ff0;filter:alpha(opacity=20);opacity:0.2; height:50px; width:316px}
</style>
</head>
<body>
<div id="wapper">
<div id="slideshow">
<ul id="imglist">
<li style=" background:#f0c;">1</li>
<li style=" background:#cf0;">2</li>
<li style=" background:#09e;">3</li>
<li style=" background:#efc;">4</li>
</ul>
</div>
<div id="nextlist">
<ul>
<li class="current">111</li>
<li>222</li>
<li>333</li>
<li>444</li>
</ul>
</div>
<div id="bg"></div>
</div>
<script type="text/javascript">
var num = 0;
function nextElement(eleObj,aa){
var obj = document.getElementById(eleObj);
	 if (obj.movement) {
    clearTimeout(obj.movement);
  }
	if (!obj.style.bottom) {
    	obj.style.bottom = "-50px";
	}
	var xpos = parseInt(obj.style.bottom);
	  if (xpos == aa) {
		return false;
		}
	  if (xpos > aa) {
		var dist = Math.ceil((xpos - aa)/5);
		xpos = xpos - dist;
	  }
		if (xpos < aa) {
		var dist = Math.ceil((aa - xpos)/5);
		xpos = xpos + dist;
	  }
	  obj.style.bottom = xpos + "px";
  
  
  var repeat = "nextElement('"+eleObj+"','"+aa+"')";
  obj.movement = setTimeout(repeat,30);
}
function moveElement() {
var elem = document.getElementById("slideshow");
var nextElem = document.getElementById("nextlist");
var imgElem = document.getElementById("imglist");
var lis = elem.getElementsByTagName("li");
var nextLis = nextElem.getElementsByTagName("li");
	
	 if (imgElem.movement) {
    clearTimeout(imgElem.movement);
  }
  if (!imgElem.style.left) {
    imgElem.style.left = "0";
  }
	  var xpos = parseInt(imgElem.style.left);
	  var naa = num * -316;
	  if (xpos == naa) {
			if(num==(lis.length - 1) || num>lis.length){
				num=0;
				return false;
			}
			else{
				num++;
				return false;
			}
		}
	for(var i=0;i<nextLis.length;i++){
		nextLis[i].className="";
		nextLis[num].className="current";
	}
	  if (xpos > naa) {
		var dist = Math.ceil((xpos - naa)/4);
		xpos = xpos - dist;
	  }
		if (xpos < naa) {
		var dist = Math.ceil((naa - xpos)/4);
		xpos = xpos + dist;
	  }
	  imgElem.style.left = xpos + "px";
  
  
  var repeat = "moveElement()";
  imgElem.movement = setTimeout(repeat,30);
  
}
function checkMove(){
var elem = document.getElementById("slideshow");
var nextElem = document.getElementById("nextlist");
var imgElem = document.getElementById("imglist");
var bgElem = document.getElementById("wapper");
var lis = elem.getElementsByTagName("li");
var nextLis = nextElem.getElementsByTagName("li");
		bgElem.onmouseover=function(){
			nextElement("nextlist",0);
			nextElement("bg",0);
		}
		bgElem.onmouseout=function(){
			nextElement("nextlist",-50);
			nextElement("bg",-50);
		}
	for(var i=0;i<nextLis.length;i++){
		
		nextLis[i].onmouseover=function(){
			clearInterval(changebox);
			thisMove(this);
		}
		nextLis[i].onmouseout=function(){
			startMove();
		}
		lis[i].onmouseover=function(){
			clearInterval(changebox);
			//thisStop(this);
		}
		lis[i].onmouseout=function(){
			startMove();
		}
	}
	function startMove(){
		changebox = setInterval("moveElement()",4000);
	}
	function thisMove(obj){
		for(var i=0;i<nextLis.length;i++){
			nextLis[i].className="";
			if(nextLis[i]==obj){
				nextLis[i].className="current";
				num=i;
				setTimeout("moveElement()",0);
			}
			else{
				 nextLis[i].className="";
			}
		}
	}
}
changebox = setInterval("moveElement()",4000);
checkMove();
</script>
</body>
</html>

所属频道：图片特效特效/更新时间：2012-11-21

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