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jquery implements countdown function_jquery

WBOY
WBOYOriginal
2016-05-16 15:23:121593browse

Definition and usage

The setInterval() method can call a function or calculate an expression according to the specified period (in milliseconds).

The setInterval() method will keep calling the function until clearInterval() is called or the window is closed. The ID value returned by setInterval() can be used as an argument to the clearInterval() method.
Example below 

<html>
  <head>
    <meta charset="utf-8">
    <title>jquery简单倒计时</title>
    </style>
    <script type="text/javascript" src="js/jquery.min.js"></script>
    <script type="text/javascript">
 
      var intDiff = parseInt(60);//倒计时总秒数量
 
      function timer(intDiff) {
        window.setInterval(function() {
          var day = 0,
              hour = 0,
              minute = 0,
              second = 0;//时间默认值    
          if (intDiff > 0) {
            day = Math.floor(intDiff / (60 * 60 * 24));
            hour = Math.floor(intDiff / (60 * 60)) - (day * 24);
            minute = Math.floor(intDiff / 60) - (day * 24 * 60) - (hour * 60);
            second = Math.floor(intDiff) - (day * 24 * 60 * 60) - (hour * 60 * 60) - (minute * 60);
          }
          if (minute <= 9)
            minute = '0' + minute;
          if (second <= 9)
            second = '0' + second;
          $('#day_show').html(day + "天");
          $('#hour_show').html('<s id="h"></s>' + hour + '时');
          $('#minute_show').html('<s></s>' + minute + '分');
          $('#second_show').html('<s></s>' + second + '秒');
          intDiff--;
        }, 1000);
      }
 
      $(function() {
        timer(intDiff);
      });
    </script>
  </head>
  <body>
    <h1>网页上的倒计时</h1>
    <div class="time-item">
      <span id="day_show">0天</span>
      <strong id="hour_show">0时</strong>
      <strong id="minute_show">0分</strong>
      <strong id="second_show">0秒</strong>
    </div>
    <!--倒计时模块-->
  </body>
</html>

I hope this article will be helpful to everyone learning jquery programming.

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