html5实现的超简单幻灯片

用html5、css3实现的超简单幻灯片，用鼠标滚轮滚动进行换页。

<!doctype html>
<html> 
<head> 
    <title></title>
    <style>
        #slides{
            position:absolute;
            left:0px;
            top:0px;
            height:100%;
            width:100%;
            overflow:hidden;    
        }
        .slide{
            position:absolute;
            height:600px;
            width:800px;
            opacity:0.7;
            background-color:rgba(0, 128, 196, 0.5) !important;
            background-color:#ccc;            
            border-radius:10px;
            left:50%;
            top:50%;
            margin-top:-300px;
            box-shadow:5px 5px 5px rgba(0, 0, 0, 0.5); 
            transition:all 0.25s ease-in-out 0s;
        }
        .current{
            opacity:1;            
            margin-left:-400px;                    
        }
        .future{
            margin-left:450px;
            transform: skew(-3deg) scale(0.8);
            -webkit-transform: skew(-3deg) scale(0.8);    
        }
        .post{
            margin-left:-1250px;
            transform: skew(3deg) scale(0.8);
            -webkit-transform: skew(3deg) scale(0.8);
        }
        .far-future{
            margin-left:1200px;
            transition:none;    
        }        
    </style>    
</head> 
<body> 


<div id="slides"> 
<div class="slide current">1</div>
<div class="slide future">2</div>
<div class="slide far-future">3</div>
<div class="slide far-future">4</div>
<div class="slide far-future">5</div>
<div class="slide far-future">6</div>
<div class="slide far-future">7</div>
</div> 

<script>
!function(){    
    var slides = document.getElementById("slides").childNodes;
    var l = slides.length;
    function fslide(e){
        var event = e || window.event;
        //console.log(event.wheelDelta +"   "+ event.detail);
        for(var i=0;i<l;i++){
            if(slides[i].className=="slide current"){
                var current_slide = slides[i];
                break;
            }    
        }
        //var current_slide = document.getElementsByClassName("current")[0]; // getElementsByClassName只有火狐，谷歌等浏览器的较新版本支持
        if((event.wheelDelta < 0 /*ie,谷歌等浏览器*/ || event.detail > 0 /*firefox*/) && nextel(current_slide)){            
            if(prevel(current_slide)){
                prevel(current_slide).className="slide far-future";
            }                
            current_slide.className="slide post";
            nextel(current_slide).className="slide current";
            if(nextel(nextel(current_slide))){
                nextel(nextel(current_slide)).className="slide future";    
            }            
        }else if((event.wheelDelta > 0 || event.detail < 0) && prevel(current_slide)){
            if(nextel(current_slide)){
                nextel(current_slide).className="slide far-future";
            }
            current_slide.className="slide future";
            prevel(current_slide).className="slide current";
            if(prevel(prevel(current_slide))){
                prevel(prevel(current_slide)).className="slide post"
            }            
        }
    }
    
    
    document.onmousewheel = fslide; // ie,谷歌等浏览器
    if(document.addEventListener){
        document.addEventListener("DOMMouseScroll",fslide,false); // firefox
    }        
}();
function prevel(el){
    if(el.previousSibling == null) return null;
    return el.previousSibling.nodeType == 1 ? el.previousSibling : prevel(el.previousSibling);
}
function nextel(el){
    if(el.nextSibling == null) return null;
    return el.nextSibling.nodeType == 1 ? el.nextSibling : nextel(el.nextSibling);
}    
</script>    
</body> 
</html>

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原文地址：https://www.cnblogs.com/sooj/p/3129327.html