console 命令行工具 X clear
console
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>判断分数等级</title>
<script type="text/JavaScript">
	function judge() {
		var score;//分数
		var degree;//分数等级
		score = prompt("你的分数是多少？")
		if (score > 100){
			degree = '耍我？100分满！';
		}
		else{
			switch (parseInt(score / 10)) {
				case 0:
				case 1:
				case 2:
				case 3:
				case 4:
				case 5:	degree = "恭喜你，又挂了！"; break;
				case 6: degree = "勉强及格"; break;
				case 7: degree = "凑合，凑合"; break;
				case 8: degree = "8错，8错"; break;
				case 9:
				case 10: degree = "高手高手，佩服佩服";
			}//end of switch
		}//end of else
		alert(degree);
	}
</script>
</head>
<body>
	<a href="javascript:judge()">判断分数等级</a>
</body>
</html>