<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>if...else</title>
<script type="text/javascript">
var score =80; //score变量存储成绩，初值为80
if(score>=60)
{
document.write("很棒，成绩及格了。");
}
else
{
document.write("加油，成绩不及格。");
}
</script>
</head>
<body>
</body>
</html>
不带诗情画意
2014-10-14
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