Question

How can I pass dynamic arguments to a function, e.g

var customvar = 1; //example

  function iLike(){

      console.log("you like ... (I know how to receive the arguments!)")
  }

  function getDrink(){

       return (customvar == 1 ? ('pepsi','cola') : ('drpepper'));
  }

  iLike('peanuts', 'pizza', getDrink());

  iLike('peanuts', 'pizza', 'pepsi', 'cola'); // = result

How to pass arguments from getDrink() correctly – I do only do receive ‘cola’ but not ‘pepsi’.

Answer 1

If you want getDrink to return an array containing 'pepsi' and 'cola' then the syntax is ['pepsi', 'cola']

I’m not quite sure if that’s what you wanted…

Note that that would still give you:

iLike('peanuts', 'pizza', ['pepsi', 'cola'])

Three arguments, out of which the last is an array, rather than four arguments.

If you want iLike to be called with four string arguments, you might want to call it like this:

function getDrink(){
    return (customvar == 1 ? ['pepsi','cola'] : ['drpepper']);
}

iLike.apply(this, ['peanuts', 'pizza'].concat(getDrinks()))