<!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;
???}
?????var?i=setIterval("clock()",1000);
?????function?str(){
?????????i=setIterval("clock()",1000)
?????}
</script>
</head>
<body>
??<form>
????<input?type="text"?id="clock"?size="50"??/>
????<input?type="button"?value="暫停"?onclick="clearInterval(i)"?/>
????<input?type="button"?value="開始"?onclick="str()"?/>
??</form>
</body>
</html>
2017-02-07
var?i=setIterval("clock()",1000);
?????function?str(){
?????????i=setIterval("clock()",1000)
你的代碼都敲錯了 ? ?應該是setInterval