<div id="wrap">
 <div id="main" style="top: 0;">
 <div class="content num1">
 <img src="https://www.bing.com/az/hprichbg/rb/SingingRingingTree_ZH-CN12497946624_1920x1080.jpg" width="100%" height="100%">
 </div>
 <div class="content num2">
 <img src="https://www.bing.com/az/hprichbg/rb/ShenandoahNP_ZH-CN9981989975_1920x1080.jpg" width="100%" height="100%">
 </div>
 <div class="content num3">
 <img src="https://www.bing.com/az/hprichbg/rb/GareSaintLazare_ZH-CN6611772290_1920x1080.jpg" width="100%" height="100%">
 </div>
 <div class="content num4">
 <img src="https://www.bing.com/az/hprichbg/rb/FriendshipSquare_ZH-CN8820626148_1920x1080.jpg" width="100%" height="100%">
 </div>
 </div>
</div>

#wrap{overflow: hidden;width: 100%;}
#main{top: 0;position: relative;}
.content{width: 100%;margin: 0;height: 100%;}
.num1{background: #e8e8e8;}
.num2{background: pink;}
.num3{background: yellow;}
.num4{background: orange;}

<script type="text/javascript">
 var wrap = document.getElementById("wrap");
 var divHeight = window.innerHeight;
 wrap.style.height = divHeight + "px";
 var content = $(".content");//懶得寫獲取類的原生js代碼了，直接用了jquery，=。=
 content.height(divHeight);
 var startTime = 0, //開始翻屏?xí)r間
 endTime = 0,
 now = 0;
 if ((navigator.userAgent.toLowerCase().indexOf("firefox")!=-1)){
 //for firefox;
 document.addEventListener("DOMMouseScroll",scrollFun,false);
 }
 else if (document.addEventListener) {
 document.addEventListener("mousewheel",scrollFun,false);
 }
 else if (document.attachEvent) {
 document.attachEvent("onmousewheel",scrollFun);
 }
 else{
 document.onmousewheel = scrollFun;
 }
 //滾動(dòng)事件處理函數(shù)
 function scrollFun(event){
 startTime = new Date().getTime();
 var delta = event.detail || (-event.wheelDelta);
 if ((endTime - startTime) < -1000) {
 //1秒內(nèi)執(zhí)行一次翻頁
 if (delta > 0 && parseInt(main.style.top) > -divHeight * ( content.length - 1)) { //向下翻頁
 now += divHeight ;
 turnPage(now);
 }
 if (delta < 0 && parseInt(main.style.top) < 0) { //向上翻頁
 now -= divHeight ;
 turnPage(now);
 }
 endTime = new Date().getTime();
 }
 else{
 event.preventDefault();
 }
 }
 //翻頁函數(shù)
 function turnPage(now){
 $("#main").animate({top:(-now+'px')},1000);
 //懶得寫動(dòng)畫代碼了，直接用了jquery，=。=
 }
</script>