Question

Possible Duplicate:
array.contains(obj) in JavaScript

Something like:

if (mystring == "a" || mystring == "b" || mystring =="c")

I was hopping to do:

if (mystring in ("a", "b", "c"))

is it possible?

Answer 1

You could use indexOf() like this

if ( [ 'a', 'b', 'c' ].indexOf( mystring ) > -1 ) { ... }

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EDIT With ES7 comes a little simplification. As of today just Chrome 47+ and FF 43+ seem to support it:

if ( [ 'a', 'b', 'c' ].includes( mystring ) ) { ... }

• MDN on Array.prototype.includes()