将毫秒添加到时钟时出现 JavaScript 错误消息 [英] JavaScript Error Message when adding Milliseconds to a clock
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问题描述
我不断收到此错误消息:
I keep getting this error message:
未捕获的语法错误:意外的标识符
Uncaught SyntaxError: Unexpected identifier
为时钟添加毫秒时.我是从书上抄来的，所以我不确定有什么问题.
when adding milliseconds to a clock. I am copying it out of a book, so I am not sure what is wrong.
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN">
<html>
<head>
<title>Event Test</title>
</head>
<body>
<h1>Event Test</h1>
<script type="text/javascript">
now = new Date();
localtime = now.toString();
utctime = now.toGMTString();
document.write("<strong>Local time:</strong> "
+ localtime + "<br/>");
document.write("<strong>UTC time:</strong> " +
utctime);
hours = now.getHours();
minutes = now.getMinutes();
seconds = now.getSeconds();
mil = now.getMilliseconds();
document.write("<h1>");
document.write(hours + ":" + minutes + ":" + seconds + ":" mil);
document.write("</h1>");
</script>
</body>
</html>
推荐答案
看起来你在这里缺少一个 + :
Looks like you're missing a + here:
document.write(hours + ":" + minutes + ":" + seconds + ":" mil);
//--------------------------------------------------------^^^^
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