<!DOCTYPE HTML> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>计时器</title> </head> <script type="text/javascript"> var num=0; var i; function startCount(){ document.getElementById(‘count‘).value=num; num=num+1; i=setTimeout("startCount()",1000); } function stopCount(){ clearTimeout(i); } </script> </head> <body> <form> <input type="text" id="count" /> <input type="button" value="Start" onclick="startCount()" /> <input type="button" value="Stop" onclick="stopCount()"/> </form> </body> </html>
时间: 2024-10-12 13:36:21