Javascript: "a === b or c"?

Question

I would like to check whether variable a is equal to b or c. Of course I know the explicit way to do this;

a === b || a === c

but is there a shorthand way of doing this in Javascript? I mean, for example,

a === (b || c)

does not work.

I found similar questions here

• Short hand to do something like: if($variable == 1 || $variable == "whatever" || $variable == '492') .

• PHP: If a equals b or c or d

but they are talking about PHP.

Answer 1

I don't think there's a shorter or more concise way of doing this in regular JavaScript.

An alternative would be to do a ternary, but this is arguably far less readable, so I would stick with the expression you have.

Ternary:

a === b ? true : a === c

Advised, as in your question

a === b || a === c

Answer 2

The simplest way is as you described a===b||a===c all other method can only expand your code. So, Use a===b||a===c instead of using any other .

Answer 3

((a === (b||c))

its the shortest way