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Create timer function using JS

php中世界最好的语言Original: 2018-06-07 11:35:492190browse

This time I will bring you the timer function using JS. What are the precautions for using JS to make the timer function? The following is a practical case, let’s take a look.

Use setInterval to implement timing, and advance one to the minute after 60 seconds, and advance one to the hour after 60 minutes.

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>JS计时器</title>
    <script>
      window.onload = function(){
      var mm = 0;
      var ss = 0;
      var str = '';
      var timer = setInterval(function(){
      str = "";
      if(++ss==60)
      {
      if(++mm==60)
      {
      mm=0;
      }
      ss=0;
      }
      str+=mm<10?"0"+mm:mm;
      str+=":";
      str+=ss<10?"0"+ss:ss;
      document.getElementById("d").innerHTML = str;
      },1000);
      };
    </script>
  </head>
  <body>
  <p id="d"></p>
  </body>
</html>

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!

Create timer function using JS

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