我的 HTML/Javascript 文档中有一个 setInterval。 现在，据我所知，setInterval 部分的输入与我的另一个文档中的完全相同，并且在那里工作得很好。但在此间隔不是每 1 秒重复一次。它运行一次，然后停止。我是否遗漏了任何明显的错误？
<html>
<head>
<title>Time</title>
</head>
<body>
<p id="line-one" />
<p id="line-two" />
<p id="line-three" />
<p id="line-four" />
<p id="seconds" />
<SCRIPT type='text/JavaScript'language='JavaScript'>
var now = new Date();
var hour = now.getHours();
var minute = now.getMinutes();
var second = now.getSeconds();
var nIntervId;
function counter()
{
if (typeof(nIntervId) != "undefined") {
clearInterval(nIntervId);
}
nIntervId = setInterval(changeASCII, 1000);
}
function changeASCII()
{
document.getElementById("seconds").innerHTML = second;
switch(second) {
case 00:
document.getElementById("line-one").innerHTML = " ___...___ ";
document.getElementById("line-two").innerHTML = "|...|.|...|";
document.getElementById("line-three").innerHTML = "|.|.|.|.|.|";
document.getElementById("line-four").innerHTML = "|___|.|___|";
break;
case 01:
document.getElementById("line-one").innerHTML = " ___ ___";
document.getElementById("line-two").innerHTML = "| | |_ |";
document.getElementById("line-three").innerHTML = "| | | _| |_";
document.getElementById("line-four").innerHTML = "|___| |_____|";
break;
default:
document.getElementById("line-one").innerHTML = "Nothing";
document.getElementById("line-two").innerHTML = "To";
document.getElementById("line-three").innerHTML = "See";
document.getElementById("line-four").innerHTML = "Here";
break;
}
}
window.onload = counter();
</SCRIPT>
</body>
</html>
最佳答案
一切都很好，但是，您没有更新秒的实际值，因此您从日期获取它，它也没有更新。
用 fiddle 检查这个；
function changeASCII()
{
now=new Date();
second=now.getSeconds();
...
关于Javascript 间隔不重复，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/23978256/