Javascript: what's the most elegant way to check whether A is equal to B or C?

Question

I need to evaluate a variable and check if it's equal to one of two other variables.

I do it like this: if (a == b || a == c) { }

I feel there's got to be a better way to evaluate variables in this manner. Is there?

Answer 1

You can also use Array.prototype.includes (ES7).

if ([b, c, d, e].includes(a)) {
  // do stuff
}