Optimize OR in IF

Question

I have a code like this:

if (action == \'John\' || action == \'John Beckham\' || action == \'Henry John\'){
     alert(\'true!\');
}

How do I m

Answer 1

Cross-browser solution:

if ( action in {'John':1, 'John Beckham':1, 'John Henry':1, 'Giggs John':1, 'Scholes John':1, 'John Messi':1 } ){
     alert('true!');
}