Is there a faster way of writing OR operator?

Question

Is there a faster way of writing this?

if ($(\'#id\').val()==7 || $(\'#id\').val()==8 || $(\'#id\').val()==9){
    console.log(\'value of #id is 7, 8, or 9!\         


        

Answer 1

The best thing you can do to speed up your code is to cache that DOM reference:

var idval = +$('#id').val();
if (idval === 7 || idval === 8 || idval === 9) { ...  }

Of course if it's really those three values, then:

if (idval >= 7 && idval <= 9) { ... }