JS实现移动端购物车左滑删除功能

 <!DOCTYPE html>

 <html>

 <head>

 <meta charset="UTF-8">

 <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">

 <title>js侧滑显示删除按钮</title>

 <style>

 *{margin:0;padding:0;}

 body{font-size:.14rem;}

 li{list-style:none;}

 i{font-style:normal;}

 a{color:#393939;text-decoration:none;}

 .list{overflow:hidden;margin-top:.2rem;padding-left:.3rem;border-top:1px solid #ddd;}

 .list li{overflow:hidden;width:120%;border-bottom:1px solid #ddd;}

 .list li a{display:block;height:.88rem;line-height:.88rem;-webkit-transition:all 0.3s linear;transition:all 0.3s linear;}

 .list li i{float:right;width:15%;text-align:center;background:#E2421B;color:#fff;}

 .swipeleft{transform:translateX(-15%);-webkit-transform:translateX(-15%);}

 </style>

 <script>

 //计算根节点HTML的字体大小

 function resizeRoot(){

     var deviceWidth = document.documentElement.clientWidth,

         num = 750,

         num1 = num / 100;

     if(deviceWidth > num){

         deviceWidth = num;

     }

     document.documentElement.style.fontSize = deviceWidth / num1 + "px";

 }

 //根节点HTML的字体大小初始化

 resizeRoot();

 window.onresize = function(){

     resizeRoot();

 };

 </script>

 </head>

 <body>

 <section>

 <div class="list">

     <ul>

         <li><a href="#">侧滑显示删除按钮1<i>删除</i></a></li>

         <li><a href="#">侧滑显示删除按钮2<i>删除</i></a></li>

         <li><a href="#">侧滑显示删除按钮3<i>删除</i></a></li>

     </ul>

 </div>

 <script>

 //侧滑显示删除按钮

 var expansion = null; //是否存在展开的list

 var container = document.querySelectorAll('.list li a');

 for(var i = 0; i < container.length; i++){

     var x, y, X, Y, swipeX, swipeY;

     container[i].addEventListener('touchstart', function(event) {

         x = event.changedTouches[0].pageX;

         y = event.changedTouches[0].pageY;

         swipeX = true;

         swipeY = true ;

         if(expansion){   //判断是否展开，如果展开则收起

             expansion.className = "";

         }

     });

     container[i].addEventListener('touchmove', function(event){

         X = event.changedTouches[0].pageX;

         Y = event.changedTouches[0].pageY;

         // 左右滑动

         if(swipeX && Math.abs(X - x) - Math.abs(Y - y) > 0){

             // 阻止事件冒泡

             event.stopPropagation();

             if(X - x > 10){   //右滑

                 event.preventDefault();

                 this.className = "";    //右滑收起

             }

             if(x - X > 10){   //左滑

                 event.preventDefault();

                 this.className = "swipeleft";   //左滑展开

                 expansion = this;

             }

             swipeY = false;

         }

         // 上下滑动

         if(swipeY && Math.abs(X - x) - Math.abs(Y - y) < 0) {

             swipeX = false;

         }

     });

 }

 </script>

 </body>

 </html>

移动自适应

 <script>

 //计算根节点HTML的字体大小

 function resizeRoot(){

     var deviceWidth = document.documentElement.clientWidth,

         num = 750,

         num1 = num / 100;

     if(deviceWidth > num){

         deviceWidth = num;

     }

     document.documentElement.style.fontSize = deviceWidth / num1 + "px";

 }

 //根节点HTML的字体大小初始化

 resizeRoot();

 window.onresize = function(){

     resizeRoot();

 };

 </script>

在实现的过程中，要注意父元素和子元素的一些样式，比如在父元素中设置box-sizing: border-box; 可以减少一些问题。

教程转载处：http://www.cnblogs.com/tnnyang/p/6429730.html

巴特西

JS实现移动端购物车左滑删除功能

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