手机端左右全屏滑动(加精)

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手机端左右全屏滑动(加精)

cometwo123 2016-03-21 12:53:00 浏览1730
展开阅读全文

上下滑动:http://blog.csdn.net/libin_1/article/details/50527583

这里写图片描述

下载http://download.csdn.net/detail/cometwo/9467993

<!DOCTYPE html>
<html lang="en">

    <head>
        <title>H5单页面手势滑屏切换</title>
        <meta name="viewport" charset="utf-8" content="width=device-width,initial-scale=1.0,maximum-scale=1.0,minimum-scale=1.0,user-scalable=1.0">
        <link rel="stylesheet" href="dist/app.css">
        <script src="js/app.js"></script>
    </head>

    <body>
        <div id="viewport" class="viewport">
            <div class="pageview" style="background: #3b76c0">
                <h3>页面-1</h3>
            </div>
            <div class="pageview" style="background: #58c03b;">
                <h3>页面-2</h3>
            </div>
            <div class="pageview" style="background: #c03b25;">
                <h3>页面-3</h3>
            </div>
            <div class="pageview" style="background: #e0a718;">
                <h3>页面-4</h3>
            </div>
            <div class="pageview" style="background: #c03eac;">
                <h3>页面-5</h3>
            </div>
        </div>
        <div class="pagenumber">
            <div></div>
            <div></div>
            <div></div>
            <div></div>
            <div></div>
        </div>
    </body>

</html>

CSS:

.viewport,
body,
html {
    height: 100%;
    overflow: hidden;
    position: relative
}

body,
html {
    width: 100%;
    margin: 0;
    padding: 0;
    font-family: Arial
}

.viewport {
    width: 500%;
    display: -webkit-box;
    pointer-events: none;
    -webkit-transform: translate3d(0, 0, 0);
    backface-visibility: hidden
}

.pageview {
    -webkit-box-flex: 1;
    width: 0
}

.pagenumber {
    display: -webkit-box;
    position: absolute;
    bottom: 2em;
    left: 35%;
    height: 2em;
    width: 30%
}

.pagenumber div {
    -webkit-box-flex: 1;
    width: 0;
    position: relative
}

.pagenumber .now:after {
    background: rgba(255, 255, 255, 1)!important
}

.pagenumber div:after {
    content: "";
    width: .4em;
    height: .4em;
    background: rgba(255, 255, 255, .5);
    border-radius: 2em;
    position: absolute;
    top: 50%;
    left: 50%;
    margin-top: -.2em;
    margin-left: -.2em
}

h3 {
    text-align: center;
    font-family: Microsoft YaHei, Arial;
    color: #fff;
    font-size: 1.7em;
    font-weight: 400;
    padding: 1em 0;
    margin: 0
}

@media screen and (max-width:360px) {
    body,
    html {
        font-size: 15px
    }
}

@media screen and (min-width:360px) and (max-width:400px) {
    body,
    html {
        font-size: 16px
    }
}

@media screen and (min-width:400px) and (max-width:460px) {
    body,
    html {
        font-size: 18px
    }
}

@media screen and (min-width:460px) {
    body,
    html {
        font-size: 24px
    }
}

js文件:

(function(window,document){
    var currentPosition = 0; //记录当前页面位置
    var currentPoint = -1;   //记录当前点的位置
    var pageNow = 1;   //当前页码
    var points = null; //页码数

    var app = {
        init:function(){
            //否则只能在手机上运行
//         if(/(windows)/i.test(navigator.userAgent)){
//             location.href = 'views/pc.html';
//         }
           document.addEventListener('DOMContentLoaded',function(){
               points = document.querySelectorAll('.pagenumber div') ;
               app.bindTouchEvent(); //绑定触摸事件
               app.setPageNow();     //设置初始页码
           }.bind(app),false);
        }(),

        //页面平移
        transform:function(translate){
           this.style.webkitTransform = "translate3d("+translate+"px,0,0)";
           currentPosition = translate;
        },

        /**
         * 设置当前页码
         */
        setPageNow:function(){
            if (currentPoint != -1){
                points[currentPoint].className = '';
            }
            currentPoint = pageNow - 1;
            points[currentPoint].className = 'now';
        },

        /**
         * 绑定触摸事件
         */
        bindTouchEvent:function(){
           var viewport =  document.querySelector('#viewport');
           var pageWidth = window.innerWidth; //页面宽度
           var maxWidth = - pageWidth * (points.length-1); //页面滑动最后一页的位置
           var startX,startY;
           var initialPos = 0;  // 手指按下的屏幕位置
           var moveLength = 0;  // 手指当前滑动的距离
           var direction = "left"; //滑动的方向
           var isMove = false; //是否发生左右滑动
           var startT = 0; //记录手指按下去的时间

           /*手指按下时*/
           document.addEventListener("touchstart",function(e){
               e.preventDefault();
               var touch = e.touches[0];
               startX = touch.pageX;
               startY = touch.pageY;
               initialPos = currentPosition;   //本次滑动前的初始位置
               viewport.style.webkitTransition = ""; //取消动画效果
               startT = new Date().getTime(); //记录手指按下的开始时间
               isMove = false;
           }.bind(this),false);

           /*手指在屏幕上滑动,页面跟随手指移动*/
           document.addEventListener("touchmove",function(e){
               e.preventDefault();
               var touch = e.touches[0];
               var deltaX = touch.pageX - startX;
               var deltaY = touch.pageY - startY;
               //如果X方向上的位移大于Y方向,则认为是左右滑动
               if (Math.abs(deltaX) > Math.abs(deltaY)){
                   moveLength = deltaX;
                   var translate = initialPos + deltaX; //当前需要移动到的位置
                   //如果translate>0 或 < maxWidth,则表示页面超出边界
                   if (translate <=0 && translate >= maxWidth){
                       this.transform.call(viewport,translate);
                       isMove = true;
                   }
                   direction = deltaX>0?"right":"left"; //判断手指滑动的方向
               }
           }.bind(this),false);

           /*手指离开屏幕时,计算最终需要停留在哪一页*/
           document.addEventListener("touchend",function(e){
               e.preventDefault();
               var translate = 0;
               //计算手指在屏幕上停留的时间
               var deltaT = new Date().getTime() - startT;
               if (isMove){ //发生了左右滑动
                    //使用动画过渡让页面滑动到最终的位置
                    viewport.style.webkitTransition = "0.3s ease -webkit-transform";
                    if(deltaT < 300){ //如果停留时间小于300ms,则认为是快速滑动,无论滑动距离是多少,都停留到下一页
                        translate = direction == 'left'?
                        currentPosition-(pageWidth+moveLength):currentPosition+pageWidth-moveLength;
                        //如果最终位置超过边界位置,则停留在边界位置
                        translate = translate > 0 ? 0 : translate; //左边界
                        translate = translate < maxWidth ? maxWidth : translate; //右边界
                    }else {
                        //如果滑动距离小于屏幕的50%,则退回到上一页
                        if (Math.abs(moveLength)/pageWidth < 0.5){
                            translate = currentPosition-moveLength;
                        }else{
                            //如果滑动距离大于屏幕的50%,则滑动到下一页
                            translate = direction == 'left'?
                            currentPosition-(pageWidth+moveLength):currentPosition+pageWidth-moveLength;
                            translate = translate > 0 ? 0 : translate;
                            translate = translate < maxWidth ? maxWidth : translate;
                        }
                    }
                    //执行滑动,让页面完整的显示到屏幕上
                    this.transform.call(viewport,translate);
                    //计算当前的页码
                    pageNow = Math.round(Math.abs(translate) / pageWidth) + 1;

                    setTimeout(function(){
                        //设置页码,DOM操作需要放到子线程中,否则会出现卡顿
                        this.setPageNow();
                    }.bind(this),100);
                }
           }.bind(this),false);
       }
    }
})(window,document);

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