time.getHours()+":"+time.getMinutes()+":"+time.getSeconds();没有冒号就只是读秒，问：冒号是官方设定必须的吗？或者可替代吗？

源自：8-3 计时器setInterval()

<!DOCTYPE HTML>

<html>

<head>

var attime;

function clock(){

var time=new Date();

attime=time.getHours()+":"+time.getMinutes()+":"+time.getSeconds();

document.getElementById("clock").value = attime;

}

setInterval("clock()",1000);

</script>

</head>

<body>

<form>

</form>

</body>

</html>

提问者：weixin_慕姐4046844 2019-12-05 22:42