初级JavaScript代码疑问

来源：百度知道 编辑：UC知道 时间：2024/04/28 21:31:27
刚学习JavaScipt.很多不明白。下面代码怎么不显示呢？高手指点。
我想在网页中显示每年都少秒。我的代码怎么不行呢。我是按照教材抄写的。

<html>
<title>
JavaScript 如何用JavaScript写变量和网页
</title>
<head>

<script language = "JavaScript">

<!--hide me
//load up some variables

var secs = 60;
var mins = 60;
var hours =24;
var days = 365;

// do some calculations

var secs-year = secs * mins * hours * days;
//end hiding -->
</script>

<script language = "JavaScript">

<!-- hide me
这里介绍如何用JavaScript写变量和网页
//here's how to use JavaScript to write out HTML

document.writeln ("<b> The animal dances ");
document.writeln (secs-year);
document.writeln (" seconds per year. </b> <p>">;

//end hiding-->
</script>
</head>
<body>
</body><

下面是修改后的:
<html>
<title>
JavaScript 如何用JavaScript写变量和网页
</title>
<head>
<script language = "javascript">

<!--hide me
//load up some variables

var secs = 60;
var mins = 60;
var hours =24;
var days = 365;

// do some calculations

var secs_year = secs * mins * hours * days;
//end hiding -->
</script>

<script language = "javascript">

<!-- hide me
//这里介绍如何用JavaScript写变量和网页
//here's how to use JavaScript to write out HTML

document.writeln ("<b> The animal dances ");
document.writeln (secs_year);
document.writeln (" seconds per year. </b> <p>");

//end hiding-->
</script>
</head>
<body>
</body>
</html>