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JavaScript監(jiān)聽觸摸事件代碼實例

來源：本站原創(chuàng)|時間：2020-01-10|欄目：JavaScript|點擊： 次

這篇文章主要介紹了JavaScript監(jiān)聽觸摸事件代碼實例,文中通過示例代碼介紹的非常詳細(xì)，對大家的學(xué)習(xí)或者工作具有一定的參考學(xué)習(xí)價值,需要的朋友可以參考下

監(jiān)聽

<!DOCTYPE html>
<html>

  <head>
    <meta charset="UTF-8">
    <meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no">
    <title>Wsscat滑動事件Demo</title>
  </head>

  <body>
    <article>上下左右滑動</article>
  </body>
  <style>
    * {
      margin: 0;
      padding: 0;
    }
    
    article {
      background-color: #000000;
      width: 100%;
      height: 100px;
      text-align: center;
      line-height: 100px;
      color: #FFFFFF;
    }
  </style>
  <script>
    (function() {
      var touch = {};
      function direction(startX, changeX, startY, changeY) {
        return Math.abs(startX - changeX) >=
          Math.abs(startY - changeY) ? (startX - changeX > 0 ? 'Left' : 'Right') : (startY - changeY > 0 ? 'Up' : 'Down')
      }
      document.getElementsByTagName('body')[0].addEventListener('touchstart', function(e) {
        touch.startY = e.targetTouches[0].pageY;
        touch.startX = e.targetTouches[0].pageX;
        //console.log("點擊時的X坐標(biāo)" + nStartX + "和Y坐標(biāo)" + nStartY);
      });
      document.getElementsByTagName('body')[0].addEventListener('touchmove', function(e) {
        touch.whenChangY = e.changedTouches[0].pageY;
        touch.whenChangX = e.changedTouches[0].pageX;
        //console.log("滑動時的X坐標(biāo)" + nWhenChangX + "和Y坐標(biāo)" + nWhenChangY);
      })
      document.getElementsByTagName('body')[0].addEventListener('touchend', function(e) {
        touch.changY = e.changedTouches[0].pageY;
        touch.changX = e.changedTouches[0].pageX;
        //console.log("滑動后的X坐標(biāo)" + nChangX + "和Y坐標(biāo)" + nChangY);
        var swDirection = direction(touch.startX, touch.changX, touch.startY, touch.changY);
        console.log(swDirection);
      })
    })()
  </script>

</html>

觸摸

<!--touchstart
在觸摸開始時觸發(fā)事件
touchend
在觸摸結(jié)束時觸發(fā)事件
touchmove
在觸摸期間時觸發(fā)事件-->

<!DOCTYPE html>
<html lang="zh-cn" class="no-js">

  <head>
    <meta http-equiv="Content-Type">
    <meta content="text/html; charset=utf-8">
    <meta charset="utf-8">
    <title></title>
    <meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no">
    <meta name="format-detection" content="telephone=no">
    <meta name="format-detection" content="email=no">
    <link rel="stylesheet" type="text/css" href="css/reset.css" rel="external nofollow" />
  </head>

  <body>
    <div class="page page-1-1 page-current">
      <div class="wrap">
      </div>
    </div>
    <div class="page page-2-1 hide">
      <div class="wrap">
      </div>
    </div>
    <div class="page page-2-2 hide">
      <div class="wrap">
      </div>
    </div>
    <div class="page page-3-1 hide">
      <div class="wrap">
      </div>
    </div>
  </body>
  <script>
    (function() {
      var now = {
          row: 1,
          col: 1
        },
        last = {
          row: 0,
          col: 0
        };
      const towards = {
        up: 1,
        right: 2,
        down: 3,
        left: 4
      };
      var isAnimating = false;
      var touch = {};
      function direction(startX, changeX, startY, changeY) {
        return Math.abs(startX - changeX) >=
          Math.abs(startY - changeY) ? (startX - changeX > 0 ? 'Left' : 'Right') : (startY - changeY > 0 ? 'Up' : 'Down')
      }
      document.getElementsByTagName('body')[0].addEventListener('touchstart', function(e) {
        touch.startY = e.targetTouches[0].pageY;
        touch.startX = e.targetTouches[0].pageX;
        //console.log("點擊時的X坐標(biāo)" + nStartX + "和Y坐標(biāo)" + nStartY);
      });
      document.getElementsByTagName('body')[0].addEventListener('touchmove', function(e) {
        touch.whenChangY = e.changedTouches[0].pageY;
        touch.whenChangX = e.changedTouches[0].pageX;
        //console.log("滑動時的X坐標(biāo)" + nWhenChangX + "和Y坐標(biāo)" + nWhenChangY);
      })
      document.getElementsByTagName('body')[0].addEventListener('touchend', function(e) {
        touch.changY = e.changedTouches[0].pageY;
        touch.changX = e.changedTouches[0].pageX;
        //console.log("滑動后的X坐標(biāo)" + nChangX + "和Y坐標(biāo)" + nChangY);
        var swDirection = direction(touch.startX, touch.changX, touch.startY, touch.changY);
        console.log(swDirection);
        //以回調(diào)的方法來寫這個動作
        if(swDirection == 'Up') {
          swipeUp(function() {
            if(isAnimating) return;
            last.row = now.row;
            last.col = now.col;
            if(now.col == 2) {
              return;
            } else if(last.row != 6) {
              now.row = last.row + 1;
              now.col = 1;
              pageMove(towards.up);
            }
          })
        }
        if(swDirection == 'Down') {
          if(isAnimating) return;
          last.row = now.row;
          last.col = now.col;
          if(now.col == 2) {
            return;
          } else if(last.row != 1) {
            now.row = last.row - 1;
            now.col = 1;
            pageMove(towards.down);
          }
        }
        if(swDirection == 'Left') {
          if(isAnimating) return;
          last.row = now.row;
          last.col = now.col;
          if(last.row > 1 && last.row < 5 && last.col == 1) {
            now.row = last.row;
            now.col = 2;
            pageMove(towards.left);
          }
        }
        if(swDirection == 'Right') {
          if(isAnimating) return;
          last.row = now.row;
          last.col = now.col;
          if(last.row > 1 && last.row < 5 && last.col == 2) {
            now.row = last.row;
            now.col = 1;
            pageMove(towards.right);
          }
        }
      })
      function swipeUp(callback) {
        callback()
      }
      function hasClass(obj, cls) {
        return obj.className.match(new RegExp('(\\s|^)' + cls + '(\\s|$)'));
      }
      console.log(window.document)
      function addClass(obj, cls) {
        if(!hasClass(obj, cls)) obj.className += " " + cls;
      }
      function removeClass(obj, cls) {
        if(hasClass(obj, cls)) {
          var reg = new RegExp('(\\s|^)' + cls + '(\\s|$)');
          obj.className = obj.className.replace(reg, ' ');
        }
      }
      function toggleClass(obj, cls) {
        if(hasClass(obj, cls)) {
          removeClass(obj, cls);
        } else {
          addClass(obj, cls);
        }
      }
      function pageMove(tw) {
        console.log(now);
        console.log(now);
        var lastPage = ".page-" + last.row + "-" + last.col,
          nowPage = ".page-" + now.row + "-" + now.col;
        switch(tw) {
          case towards.up:
            outClass = 'pt-page-moveToTop';
            inClass = 'pt-page-moveFromBottom';
            break;
          case towards.right:
            outClass = 'pt-page-moveToRight';
            inClass = 'pt-page-moveFromLeft';
            break;
          case towards.down:
            outClass = 'pt-page-moveToBottom';
            inClass = 'pt-page-moveFromTop';
            break;
          case towards.left:
            outClass = 'pt-page-moveToLeft';
            inClass = 'pt-page-moveFromRight';
            break;
        }
        isAnimating = true;
        var $nowPage = document.querySelector(nowPage);
        var $lastPage = document.querySelector(lastPage);
        console.log($nowPage);
        removeClass($nowPage, "hide");
        addClass($lastPage, outClass)
        addClass($nowPage, inClass);
        setTimeout(function() {
          removeClass($lastPage, 'page-current');
          removeClass($lastPage, outClass);
          addClass($lastPage, "hide");
          addClass($nowPage, 'page-current');
          removeClass($nowPage, inClass);
          isAnimating = false;
        }, 600);
      }
    })()
  </script>
  <style>
    body {
      width: 100%;
      overflow: hidden;
    }
    
    .page {
      width: 100%;
      height: 100%;
      position: absolute;
      font-size: 100px;
      text-align: center;
    }
    
    .page .wrap {
      height: 500px;
    }
    
    .page-1-1 {
      background-image: url(img/background/1.png);
      background-size: cover;
    }
    
    .page-2-1 {
      background-image: url(img/background/1.png);
      background-size: cover;
    }
    
    .page-2-2 {
      background-image: url(img/background/1.png);
      background-size: cover;
    }
    
    .page-3-1 {
      background-image: url(img/background/1.png);
      background-size: cover;
    }
    
    .page-3-2 {
      background-image: url(img/background/1.png);
      background-size: cover;
    }
    
    .page-4-1 {
      background-image: url(img/background/1.png);
      background-size: cover;
    }
    
    .page-4-2 {
      background-image: url(img/background/1.png);
      background-size: cover;
    }
    
    .page-5-1 {
      background-image: url(img/background/1.png);
      background-size: cover;
    }
    
    .page-current {
      z-index: 1;
    }
    
    .hide {
      display: none;
    }
    
    .pt-page-moveToTop {
      -webkit-animation: moveToTop .6s ease both;
      animation: moveToTop .6s ease both;
    }
    
    @-webkit-keyframes moveToTop {
      from {}
      to {
        -webkit-transform: translateY(-100%);
      }
    }
    
    .pt-page-moveFromBottom {
      -webkit-animation: moveFromBottom .6s ease both;
      animation: moveFromBottom .6s ease both;
    }
    
    @-webkit-keyframes moveFromBottom {
      from {
        -webkit-transform: translateY(100%);
      }
    }
    
    .pt-page-moveToBottom {
      -webkit-animation: moveToBottom .6s ease both;
      animation: moveToBottom .6s ease both;
    }
    
    @-webkit-keyframes moveToBottom {
      from {}
      to {
        -webkit-transform: translateY(100%);
      }
    }
    
    .pt-page-moveFromTop {
      -webkit-animation: moveFromTop .6s ease both;
      animation: moveFromTop .6s ease both;
    }
    
    @-webkit-keyframes moveFromTop {
      from {
        -webkit-transform: translateY(-100%);
      }
    }
    
    .pt-page-moveToRight {
      -webkit-animation: moveToRight .6s ease both;
      animation: moveToRight .6s ease both;
    }
    
    @-webkit-keyframes moveToRight {
      from {}
      to {
        -webkit-transform: translateX(100%);
      }
    }
    
    .pt-page-moveToLeft {
      -webkit-animation: moveToLeft .6s ease both;
      animation: moveToLeft .6s ease both;
    }
    
    @-webkit-keyframes moveToLeft {
      from {}
      to {
        -webkit-transform: translateX(-100%);
      }
    }
  </style>

</html>

觸摸前后

<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8">
    <title></title>
  </head>
  <body>
    <!--利用touchstart和touchend觸摸前后監(jiān)聽到的四個坐標(biāo)分別是觸摸前的x，y坐標(biāo)和觸摸后的x，y坐標(biāo)，
    然后用數(shù)學(xué)公式進(jìn)行運算得出方向-->
  </body>
  <script type="text/javascript">
    document.getElementsByTagName('body')[0].addEventListener('touchstart', function(e) {
        touch.startY = e.targetTouches[0].pageY;
        touch.startX = e.targetTouches[0].pageX;
        //console.log("點擊時的X坐標(biāo)" + nStartX + "和Y坐標(biāo)" + nStartY);
      });
    document.getElementsByTagName('body')[0].addEventListener('touchmove', function(e) {
        touch.whenChangY = e.changedTouches[0].pageY;
        touch.whenChangX = e.changedTouches[0].pageX;
        //console.log("滑動時的X坐標(biāo)" + nWhenChangX + "和Y坐標(biāo)" + nWhenChangY);
      })
    document.getElementsByTagName('body')[0].addEventListener('touchend', function(e) {
        touch.changY = e.changedTouches[0].pageY;
        touch.changX = e.changedTouches[0].pageX;
        //console.log("滑動后的X坐標(biāo)" + nChangX + "和Y坐標(biāo)" + nChangY);
        var swDirection = direction(touch.startX, touch.changX, touch.startY, touch.changY);
  </script>
</html>

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