計時器類型:javascript
計時器方法:html
setInterval() & clearInterval()java
<!DOCTYPE HTML> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>計時器</title> <script type="text/javascript"> function clock(){ var time=new Date(); document.getElementById("clock").value = time; } // 每隔100毫秒調用clock函數,並將返回值賦值給i var i=setInterval("clock()",100); </script> </head> <body> <form> <input type="text" id="clock" size="50" /> <input type="button" value="Stop" onclick="clearInterval(i)" /> </form> </body> </html>
setTimeout() & clearTimeout()函數
<!DOCTYPE HTML> <html> <head> <script type="text/javascript"> var num=0; function numCount(){ document.getElementById('txt').value=num; num=num+1; setTimeout("numCount()",1000); } </script> </head> <body> <form> <input type="text" id="txt" /> <input type="button" value="Start" onClick="numCount()" /> </form> </body> </html>