<!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" οnclick="startCount()"/> <input type="button" value="Stop" οnclick="stopCount()"/> </form></body></html>
转载于:https://www.cnblogs.com/swust-li/p/4506992.html
