This morning, I was trying to learn how to use Redux when I found myself in a situation in which I wanted to break out of a reducer Case block early based on a dynamic condition (whether or not an item with the given ID could be found). If I was in a vanilla function, I'd simply create a "guard condition" with a return statement inside of it; but, I didn't want to return out of the reducer [function] - just the case. Then it occurred to me, maybe a Case block could employ multiple break statements in the same way that a function can employ multiple return statements.
To test this, I created a function that would test a given expression against two sets of Case block. Each case block would match against three values in a range; and, it would console-log each value, in the range, up to the given value; but, it will "break" out of the case when it reaches the given value.
It's probably easier to just look at the code:
As you can see, within each case "range", I'm only logging-out up to the given letter; then, I'm attempting break out of the case with a conditional break statement. And, when we run the above code, we get the following output:
great informative article...
Glad you enjoyed :)
This reminds me of [Duff's Device](https://en.wikipedia.org/wiki/Duff's_device).
The correct URL: http://tc39.github.io/ecma262/#sec-switch-statement
I much needed this bit of knowledge - thanks again to you Ben.