问答详情
源自：8-4 取消计时器clearInterval()

这么些为什么不行

<!DOCTYPE HTML>

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8">

<title>计时器</title>

<script type="text/javascript">

   function clock(){

      var time=new Date();                     

      document.getElementById("clock").value = time;

   }

   setInterval("clock()",100); 

   function mm(){

   setInterval("clock()",100); 

   }

</script>

</head>

<body>

  <form>

    <input type="text" id="clock" size="50"  />

    <input type="button" value="Stop"  onclick="clearInterval(setInterval("clock()",100))"/>

<input type="button" value="Start"  onclick="mm()"/>

  </form>

</body>

</html>


提问者：小侠客 2016-03-24 16:42

个回答

  • 小侠客
    2016-03-25 14:08:09

    额，什么鬼

    0
  • 涼風有信
    2016-03-24 18:32:31

    <!DOCTYPE HTML>
    <html>
    <head>
       <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
       <title>计时器</title>
       <script type="text/javascript">
           function clock(){
               var time=new Date();
               document.getElementById("clock").value = time;
           }
           var i=setInterval("clock()",100);
           function mm(){
               i=setInterval("clock()",100);
           }
       </script>
    </head>
    <body>
    <form>
       <input type="text" id="clock" size="50"  />
       <input type="button" value="Stop"  onclick="clearInterval(i)"/>
       <input type="button" value="Start"  onclick="mm()"/>
    </form>
    </body>
    </html>

    0