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  • 左右运动轮播图

    <!DOCTYPE HTML>
    <html>
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <title>轮播图-左右轮播运动</title>
    <style>
    body,ul,ol{margin:0;padding:0;}
    li{ list-style:none;}
    img{ border:none; vertical-align:top;display: block;width: 100% }
    #box{width:470px;height:150px; position:relative; margin:30px auto; overflow:hidden;}
    ul{ width:470px; position:absolute;left:0; top:0; z-index:1;}
    ul li{width:470px; position:absolute; top:0;}
    ol{z-index:2; width:120px; position:absolute;right:10px; bottom:10px;}
    ol li{ width:20px;height:20px; float:left;margin:0 2px; display:inline; background:#fff; color:#f60; line-height:20px; text-align:center;}
    ol .active{ background:#f60; color:#fff;}
    </style>
    <script src="js/move.js"></script>
    </head>
    <body>
    <div id="box">
        <ul>
        <li style="display:block"><img src="images/1.jpg" alt=""/></li>
    <li><img src="images/2.jpg" alt=""/></li>
    <li><img src="images/3.jpg" alt=""/></li>
    <li><img src="images/4.jpg" alt=""/></li>
    <li><img src="images/5.jpg" alt=""/></li>
    </ul>
    <ol>
        <li class="active">1</li>
    <li>2</li>
    <li>3</li>
    <li>4</li>
    <li>5</li>
    </ol>
    </div>
    <script>
    var oBox=document.getElementById("box");
        var oUl = document.getElementsByTagName('ul')[0];
        var aLiUl = oUl.getElementsByTagName('li'); 
        var oOl = document.getElementsByTagName('ol')[0];
    var aLiOl = oOl.getElementsByTagName('li');
    var oneWidth=aLiUl[0].offsetWidth;
    var iNow=0;
    var aBtn=true;//定义一个开关,解决连续触发运动
    for(var i=1;i<aLiUl.length;i++){
    aLiUl[i].style.left=oneWidth+'px';
    };
    for(var i=0;i<aLiOl.length;i++){
    aLiOl[i].index=i;
    aLiOl[i].onmouseover=function(){
    if(aBtn){
    aBtn=false;
    for(var i=0;i<aLiOl.length;i++){
    aLiOl[i].className='';
    };
    if(iNow<this.index){
    aLiUl[this.index].style.left=oneWidth+'px';
    startMove(aLiUl[iNow],{left:-oneWidth});
    }else if(iNow>this.index){
    aLiUl[this.index].style.left=-oneWidth+'px';
    startMove(aLiUl[iNow],{left:oneWidth});
    }
    this.className='active';
    startMove(aLiUl[this.index],{left:0},function(){
    aBtn=true
    });
    iNow=this.index;
    }
    }
    }
    </script>
    </body>
    </html>
    move.js
    // JavaScript Document
    function startMove(obj,json,endFn){
        
            clearInterval(obj.timer);
            
            obj.timer = setInterval(function(){
                
                var bBtn = true;
                
                for(var attr in json){
                    
                    var iCur = 0;
                
                    if(attr == 'opacity'){
                        if(Math.round(parseFloat(getStyle(obj,attr))*100)==0){
                        iCur = Math.round(parseFloat(getStyle(obj,attr))*100);
                        
                        }
                        else{
                            iCur = Math.round(parseFloat(getStyle(obj,attr))*100) || 100;
                        }   
                    }
                    else{
                        iCur = parseInt(getStyle(obj,attr)) || 0;
                    }
                    
                    var iSpeed = (json[attr] - iCur)/8;
                iSpeed = iSpeed >0 ? Math.ceil(iSpeed) : Math.floor(iSpeed);
                    if(iCur!=json[attr]){
                        bBtn = false;
                    }
                    
                    if(attr == 'opacity'){
                        obj.style.filter = 'alpha(opacity=' +(iCur + iSpeed)+ ')';
                        obj.style.opacity = (iCur + iSpeed)/100;
                        
                    }
                    else{
                        obj.style[attr] = iCur + iSpeed + 'px';
                    }
                    
                    
                }
                
                if(bBtn){
                    clearInterval(obj.timer);
                    
                    if(endFn){
                        endFn.call(obj);
                    }
                }
                
            },30);
        
        }
        
        
        function getStyle(obj,attr){
            if(obj.currentStyle){
                return obj.currentStyle[attr];
            }
            else{
                return getComputedStyle(obj,false)[attr];
            }
        }

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  • 原文地址:https://www.cnblogs.com/hilxj/p/10547532.html
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