JavaScript 中多种情况的 switch 语句

使用JavaScript中的switch语句可以根据多种情况来执行不同的代码块。switch语句是一种条件语句，它根据表达式的值来选择要执行的代码块。与if语句相比，switch语句更适用于多个固定值的情况。

javascript
let day = 3;
let dayName;
switch (day) {
  case 1:
    dayName = "星期一";
    break;
  case 2:
    dayName = "星期二";
    break;
  case 3:
    dayName = "星期三";
    break;
  case 4:
    dayName = "星期四";
    break;
  case 5:
    dayName = "星期五";
    break;
  case 6:
    dayName = "星期六";
    break;
  case 7:
    dayName = "星期日";
    break;
  default:
    dayName = "无效的日期";
}
console.log(dayName);

javascript
let color = "红色";
let colorType;
switch (color) {
  case "红色":
  case "粉色":
  case "橙色":
    colorType = "暖色调";
    break;
  case "蓝色":
  case "绿色":
  case "紫色":
    colorType = "冷色调";
    break;
  default:
    colorType = "未知颜色";
}
console.log(colorType);