JavaScript，类型转换语句: 两种情况下运行相同代码的方法？

有没有一种方法可以将两个不同的 case 值分配给同一块代码，而不需要复制和粘贴？例如，低于68和40应该执行相同的代码，而30是不相关的。

case 68:
//Do something
break;


case 40:
//Do the same thing
break;


case 30:
//Do something different
break;

认为这样的东西应该起作用(即使它显然不起作用)是不正确的吗？

case 68 || 40:
//Do something
break;


case 30:
//Do something else
break;

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case 68:
case 40:
// stuff
break;

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Yes, you just put the related case statements next to each other, like this:

case 40:  // Fallthrough
case 68:
// Do something
break;


case 30:
// Do something different
break;

The Fallthrough comment is there for two reasons:

It reassures human readers that you're doing this deliberately
It silences warnings from Lint-like tools that issue warnings about possible accidental fallthrough.

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最佳答案

Just put them right after each other without a break

switch (myVar) {
case 68:
case 40:
// Do stuff
break;


case 30:
// Do stuff
break;
}

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Also, It is not limited to just two cases, you can extend it to any no. of cases.

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You should use:

switch condition {
case 1,2,3:
// do something
case 4,5:
// do something
default:
// do something
}

Cases should be comma-separated.

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Cleaner way to do that 👌

if ([68, 48, 22, 53].indexOf(value) > -1)
//Do something
else if ([44, 1, 0, 24, 22].indexOf(value) > -1)
//Do another

You can do that for multiple values with the same result