JavaScript中多个case的switch语句

2022-01-19 00:00:00 switch-statement javascript

我需要在 JavaScript 中的 switch 语句中使用多个案例，例如:

I need multiple cases in switch statement in JavaScript, Something like:

switch (varName)
{
   case "afshin", "saeed", "larry":
       alert('Hey');
       break;

   default:
       alert('Default case');
       break;
}

我该怎么做?如果没有办法在 JavaScript 中做类似的事情，我想知道一个替代解决方案，它也遵循 DRY 概念.

How can I do that? If there's no way to do something like that in JavaScript, I want to know an alternative solution that also follows the DRY concept.

推荐答案

使用 switch 语句的贯穿功能.匹配的 case 将一直运行，直到找到 break(或 switch 语句的结尾)，所以你可以这样写:

Use the fall-through feature of the switch statement. A matched case will run until a break (or the end of the switch statement) is found, so you could write it like:

switch (varName)
{
   case "afshin":
   case "saeed":
   case "larry": 
       alert('Hey');
       break;

   default: 
       alert('Default case');
}

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