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JS实现移动端整屏滑动的实例代码

2024-05-06 16:40:50
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基本思路:

1)检测手指滑动方向:获取手指抬起时的位置,减去手指按下时的位置,得正即为向下滑动了

2)手指抬起后,向对应反向操作改变当前页的位置

具体代码如下:

html

<div id="wrap">  <div id="page01" class="pages">第一屏</div>  <div id="page02" class="pages">第二屏</div>  <div id="page03" class="pages">第三屏</div>  <div id="page04" class="pages">第四屏</div></div><div id="dots">  <span class="now"></span><span class=""></span><span class=""></span><span class=""></span></div>

css

*{      margin:0;      padding:0;    }    body{      overflow: hidden;    }    #wrap > div{      width: 10rem;      position: absolute;      left: 0;      top: 0;      background: #fff;      transition: all 0.3s ease;    }    #dots{      position: fixed;      right: 5px;      top: 40%;      z-index: 9;    }    #dots span{      display: block;      height: 0.2rem;      width: 0.2rem;      border: 1px solid #000;      border-radius: 50%;      margin-bottom: 3px;    }    #dots .now{      background: #555;    }

js分为两块

第一,设置html标签的font-size,以便设置rem的基数 (放在页面头部)

document.getElementsByTagName("html")[0].style.fontSize = window.innerWidth/10 + "px";

第二,具体的滑动操作代码

 window.onload = function(){      var oDiv = document.getElementById("wrap");      var aPages = oDiv.getElementsByClassName("pages");      var aDots = document.getElementById("dots").getElementsByTagName("span");      var winH = window.innerHeight;      var tTime = 1;      //设置每页的高度和zindex值      for(var i=0; i<aPages.length; i++){        aPages[i].style.height = winH + "px";        aPages[i].style.zIndex = 1;      }      aPages[0].style.zIndex = 3;      aPages[1].style.zIndex = 2;      oDiv.style.height = winH + "px";      //手指拖动事件(去除默认动作)      document.addEventListener("touchmove",function(e){        e.preventDefault();      });      var YStart = 0;      var iNow = 0;      //手指按下      oDiv.addEventListener("touchstart",function(e){        YStart = e.changedTouches[0].clientY;      });      //手指移动      oDiv.addEventListener("touchmove",function(e){        disY = e.changedTouches[0].clientY-YStart; //向下滑正,向上滑负      });      //手指离开      oDiv.addEventListener("touchend",function(e){        disY = e.changedTouches[0].clientY-YStart; //向下滑正,向上滑负        if(Math.abs(disY)>winH/20){ //只有当滑动距离大于了一定值得时候,才执行切换          if(disY<0){            iNow++;            if(iNow>=aDots.length){              iNow = 0;            }            aPages[0].style.transform = "translateY("+ -winH +"px)";            doSlide();          }else{            iNow--;            if(iNow<0){              iNow = aDots.length-1;            }            aPages[0].style.transform = "translateY("+ winH +"px)";            doSlide("up");          }        }      });      function doSlide(upflag){        for(var i=0;i<aDots.length;i++){          aDots[i].className = "";        }        aDots[iNow].className = "now";        if(upflag){            //向上滑            aPages[3].style.zIndex = 2;            aPages[1].style.zIndex = 1;            oDiv.insertBefore(aPages[3],aPages[1]);            setTimeout(function(){              aPages[1].style.transform = "translateY(0px)";              aPages[1].style.zIndex = 2;              aPages[0].style.zIndex = 3;            },300)        }else{          setTimeout(function(){            aPages[0].style.transform = "translateY(0px)";            aPages[0].style.zIndex = 1;            aPages[1].style.zIndex = 3;            aPages[2].style.zIndex = 2;            oDiv.appendChild(aPages[0]);          },300)        }      }    }

好了,在给大家分享一段简单的代码,JS实现移动端整页滑屏示,具体代码如下所示:

<!DOCTYPE html><html>  <head>    <meta charset="UTF-8"/>    <meta name="viewport" content="width=device-width,initial-scale=1,maximum-scale=1,user-scalable=0" />    <meta name="format-detection" content="telephone=no" />    <meta content="yes" name="mobile-web-app-capable">    <meta content="yes" name="apple-mobile-web-app-capable" />    <meta http-equiv="Cache-Control" content="no-siteapp" />    <title>移动端整页滑屏示例</title>    <style type="text/css">      * {        padding: 0;        margin: 0;        font-family: Verdana;      }      body,      html {        height: 100%;        background-color: #000000;      }      .wrap {        width: 100%;        height: 100%;        overflow: hidden;      }      .wrap2 {        width: 100%;        height: 1000%;        transition: 0.3s linear      }      .page {        width: 100%;        height: 10%      }      .page {        background-color: #fdfdfd;        font-size: 100px;        line-height: 400px;        text-align: center;        font-weight: bold;      }    </style>  </head>  <body>    <div class="wrap" id="wrap">      <div class="wrap2" id="wrap2">        <div class="page">1</div>        <div class="page" style="background-color:#dddddd;">2</div>        <div class="page">3</div>        <div class="page" style="background-color:#dddddd;">4</div>        <div class="page">5</div>        <div class="page" style="background-color:#dddddd;">6</div>      </div>    </div>    <script type="text/javascript">      //重要!禁止移动端滑动的默认事件      document.body.addEventListener('touchmove', function(event) {        event = event ? event : window.event;        if(event.preventDefault) {          event.preventDefault()        } else {          event.returnValue = false        }      }, false)      var pages = function(obj) {        var box = document.getElementById(obj.wrap);        var box2 = document.getElementById(obj.wrap2);        var len = obj.len;        var n = obj.n;        var startY, moveY, cliH;        //获取屏幕高度        var getH = function() {          cliH = document.body.clientHeight        };        getH();        window.addEventListener('resize', getH, false);        //touchStart        var touchstart = function(event) {          if(!event.touches.length) {            return;          }          startY = event.touches[0].pageY;          moveY = 0;        };        //touchMove        var touchmove = function(event) {          if(!event.touches.length) {            return;          }          moveY = event.touches[0].pageY - startY;          box2.style.transform = 'translateY(' + (-n * cliH + moveY) + 'px)'; //根据手指的位置移动页面        };        //touchEnd        var touchend = function(event) {          //位移小于+-50的不翻页          if(moveY < -50) n++;          if(moveY > 50) n--;          //最后&最前页控制          if(n < 0) n = 0;          if(n > len - 1) n = len - 1;          //重定位          box2.style.transform = 'translateY(' + (-n * 10) + '%)'; //根据百分比位置移动页面          console.log(n)        };        //touch事件绑定        box.addEventListener("touchstart", function(event) {          touchstart(event)        }, false);        box.addEventListener("touchmove", function(event) {          touchmove(event)        }, false);        box.addEventListener("touchend", function(event) {          touchend(event)        }, false);      };      pages({        wrap: 'wrap', //.wrap的id        wrap2: 'wrap2', //.wrap2的id        len: 6, //一共有几页        n: 0 //页面一打开默认在第几页?第一页就是0,第二页就是1      });    </script>  </body></html>

总结

以上所述是小编给大家介绍的JS实现移动端整屏滑动的实例代码,希望对大家有所帮助,如果大家有任何疑问请给我留言,小编会及时回复大家的。在此也非常感谢大家对VeVb武林网网站的支持!


注:相关教程知识阅读请移步到JavaScript/Ajax教程频道。
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