哪位大神看看為什么運行不了
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>計時器</title>
<script type="text/javascript">
? var num=0;
? function startCount() {
??? document.getElementById("count").value=num;
??? num=num+1;
? setTimeout("startCount()",1000);
? }
?startCount();
?
</script>
</head>
<body>
<form>
<input type="text" id="count" />
</form>
</body>
</html>
2018-08-03
<input type="text" id="count" />加個onClick="startCount()"?
2018-08-03
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>計時器</title>
<script type="text/javascript">
? var num=0;
? function startCount() {
? ? document.getElementById('count').value=num;
? ? num=num+1;
? ? setTimeout("startCount()",1000);
? }
??
</script>
</head>
<body>
<form>
<input type="text" id="count" onClick="startCount()" />
</form>
</body>
</html>
2018-07-15
<!DOCTYPE?html> <html>???? ?<head>???????? ??<title></title>???????? ??<meta?charset="UTF-8">???? ?</head>???? ?<body>???????? ?<div?id="count"></div>????????? ?<script>????????????????? ?window.onload?=?showTime;???????????????????????? ?var?show?=?document.getElementById('count');???????????????????????? ?function?showTime()?{???????????????????????????????? ???var?date?=?new?Date();???????????????? ???let?h?=?date.getHours();???????????????? ???let?m?=?date.getMinutes();???????????????? ???let?s?=?date.getSeconds();??????????????? ???m?=?checkTime(m);???????????????? ???s?=?checkTime(s);???????????????? ???show.innerHTML?=?h?+?':'?+?m?+?':'?+?s;???????????????????????????????? ???t?=?setTimeout(function?()?{???????????????????? ?????showTime();???????????????? ???},?1000);???????????? ?}???????????? ?function?checkTime(i)?{????????????????? ????if?(i?<?10)?{???????????????????? ?????i?=?'0'?+?i;???????????????? ????}???????????????? ????return?i;???????????? ??}???????? ??</script>???? ??</body> </html>