条件语句
If 语句
语法
实例
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset = utf-8"/>
<title>JS25</title>
<script type="text/javascript">
var time = 19;
if (time<20)
{
x="Good day";
}
alert(x);
</script>
</head>
<body>
</body>
</html>
