长按保存的方法

最新推荐文章于 2023-11-30 11:25:31 发布

原创最新推荐文章于 2023-11-30 11:25:31 发布 · 883 阅读

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<!DOCTYPE html>
<html lang="en"><head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width,initial-scale=1,maximum-scale=1,user-scalable=no">
  <title>长按</title>
  <style>
    body {
      -webkit-touch-callout: none !important;
      -webkit-overflow-scrolling: touch;
    }
    img,a{
      pointer-events: none;
    }
    .long{
      -webkit-user-select: none;
    }
  </style>
  <script src="jquery-3.0.0.min.js"></script>  //当然也可以引入绝对路径
<body>
<div style="margin-left: 200px;margin-top: 100px"><button class="long" style="width:100px;height:100px; user-select: none;"></button></div>
<div style="margin-top: 100px;margin-left: 100px"><span id="num" style="font-size: 100px;">5</span></div>
<script>
  <!--阻止默认行为,相当于鼠标右键-->
  window.document.oncontextmenu = function (e) {
    e.preventDefault();
  };
  var $long = $('.long');
  var timer = null;
  $long.on('touchstart', function(){
    plus('#num');
  });
  $long.on('touchend', function(){
    clearTimeout(timer);
  });

  function plus(ele){
    var num = parseInt($(ele).text());
    $(ele).text(++num);
    timer = setTimeout(function(){
      plus(ele);
    }, 200);
  }
</script>