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Create timer function using JS

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Release： 2018-06-07 11:35:49
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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>
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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!

Recommended reading:

How to operate Vue to make a proxy agent

Use classes in ES6 to imitate Vue to make two-way binding Certainly

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Related labels：
js setinterval timer
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