JavaScript - Shorthand of "Or" inside an if statement

Question

Is there a shorthand for "Or" condition inside an if statement, I feel it's stupid to be repetitive, in the below case "a" variable is repetitive to check all the "Or" conditions:

  if(a != 'Cancelled' || a != 'Rejected' || a != 'Delivered' || a != 'Confirmed'){

    //execute something here

 }

not really, the best way could potentially be to rewrite the condition using and or just a single flag if possible. — bmartin, Sep 15 '16 at 21:00
Another one with basically the same title: http://stackoverflow.com/questions/11127753/shorthand-for-multiple-or-expressions-in-if-statement Search before you post. — epascarello, Sep 15 '16 at 21:01
`a != 'Cancelled' || a != 'Rejected' || ...` will always be true, since if it would be false then `a` must both be `'Cancelled'` and `'Rejected'` (etc.) and that's not possible. — Frxstrem, Sep 15 '16 at 21:03

score 2 · Accepted Answer · answered Sep 15 '16 at 21:00

2

if (['Cancelled', 'Rejected', 'Delivered', 'Confirmed'].indexOf(a) == -1) {
  // do stuff here
}

answered Sep 15 '16 at 21:00

davidhu

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Great Answer! Thanks a lot! +1 – Hamza L. Sep 15 '16 at 21:22

JavaScript - Shorthand of "Or" inside an if statement

1 Answers1