3.6 switch练习
作者:互联网
练习一:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>switch练习1</title>
<script type="text/javascript">
/*
* 对于成绩大于60分的,输出'合格'。低于60分的,输出'不合格'
*
* 6x / 10 = 6
* 7x / 10 = 7
* 8x / 10 = 8
* 9x / 10 = 9
* 100 / 10 = 10
*
*/
var score = 75;
/*switch(parseInt(score/10)){
case 10:
case 9:
case 8:
case 7:
case 6:
console.log("合格");
break;
default:
console.log("不合格");
break;
}*/
switch(true){
case score >= 60:
console.log("合格");
break;
default:
console.log("不合格");
break;
}
</script>
<body>
</body>
</html>
练习二:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>switch练习2</title>
<script type="text/javascript">
/*
* 从键盘接收整数参数,如果该数为1-7,打印对应的星期,否则打印非法参数。
*/
var day=+prompt("请输入一个整数");
switch(day){
case 1:
alert("星期一");
break;
case 2:
alert("星期二");
break;
case 3:
alert("星期三");
break;
case 4:
alert("星期四");
break;
case 5:
alert("星期五");
break;
case 6:
alert("星期六");
break;
case 7:
alert("星期日");
break;
default:
alert("非法参数");
}
</script>
<body>
</body>
</html>
标签:case,break,console,10,练习,alert,3.6,switch 来源: https://www.cnblogs.com/sherryyuan/p/16484866.html