详解js中switch语句的使用方法

switch(表达式) {
 case n:
 代码块
 break;
 case n:
 代码块
 break;
 default:
 默认代码块
}

switch (new Date().getDay()) {
 case 0:
 day = "星期天";
 break;
 case 1:
 day = "星期一";
 break;
 case 2:
 day = "星期二";
 break;
 case 3:
 day = "星期三";
 break;
 case 4:
 day = "星期四";
 break;
 case 5:
 day = "星期五";
 break;
 case 6:
 day = "星期六";
}