• 闲来无事在移动端做一个小demo 下拉选中代码如下,希望可以帮助到大家


    <!DOCTYPE html>
    <html lang="en">
    <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width,minimum-scale=1.0,maximum-scale=1.0"/>
    </head>
    <style type="text/css">
      html,body{
        100%;
        height: 200%;
        font-size: 12px;
        margin:0;
        padding: 0;
      }
      #oUl{
        list-style: none;
        margin:0;
        padding:0;
      }
      #oUl li{
        100%;
        font-size: 1rem;
        height:1.5rem;
        text-align: center;
        line-height: 1.5rem;
        border:1px solid red;
      }
      .active{
        background: red;
      }
      .activeall{
        background:green;
      }

    </style>
    <body>
      <ul id="oUl">
        <li name='1'>李四</li>
        <li name='2'>张三</li>
        <li name='3'>王五</li>
        <li name='4'>张踢啊</li>
        <li name='5'>李四</li>
        <li name='6'>张三</li>
        <li name='7'>王五</li>
        <li name="8">张踢啊</li>
        <li name='9'>王五</li>
        <li name="10">张踢啊</li>
        <li name='11'>李四</li>
        <li name='12'>张三</li>
        <li name='13'>王五</li>
        <li name="14">张踢啊</li>
      </ul>
    </body>
    <script type="text/javascript" src="jquery.js"></script>
    <script type="text/javascript">
    var a = document.getElementById("oUl");
    var b = 'li';
    var url = "http://www.baidu.com";
    function load (a,b,url){
    var oul = a;
    var le;
    oul.addEventListener('touchstart',touch, false);
    oul.addEventListener('touchmove',touch, false);
    oul.addEventListener('touchend',touch, false);
    function touch (event){
      var event = event || window.event;
      var oli = oul.getElementsByTagName(b);
      switch(event.type){
        case "touchstart":
          event.target.className = 'active';
          var clX = event.changedTouches[0].clientX;
          var clY = event.changedTouches[0].clientY;
          le=clY;
          break;
        case "touchend":
          window.location.href = url;
          break;
        case "touchmove":
          event.preventDefault();
          var clX = event.changedTouches[0].clientX;
          var clY = event.changedTouches[0].clientY;
          for(var j=0; j<oli.length; j++){
            if(oli[j].className=="active"){
              var clLL = oli[j].offsetLeft;
              var clXX = clLL + oli[0].offsetWidth;
              var clTT = oli[j].offsetTop;
              var clYY = clTT + oli[0].offsetHeight;
              if(clLL<clX && clXX>clX && clTT<clY && clYY>=clY){
                if(le<clY){
                  if((j+1)<oli.length){
                    oli[j+1].className = '';
                  }
                }else if(le>clY){
                  if((j-1)>=0){
                    oli[j-1].className = '';
                  }
                }
              }
              }else{
                var clLL = oli[j].offsetLeft;
                var clXX = clLL + oli[0].offsetWidth;
                var clTT = oli[j].offsetTop;
                var clYY = clTT + oli[0].offsetHeight;
              if(clLL<clX && clXX>clX && clTT<clY && clYY>= clY ){
                console.log('1')
                oli[j].className = 'active';
              }
            }
          }
          break;
        }
       }
    }
    window.addEventListener('load',load(a,b,url), false);
    </script>
    </html>

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  • 原文地址:https://www.cnblogs.com/xujianjian/p/6962767.html
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