I am creating a user based function that I will save in my repository for re-use later. But I'm facing a problem with putting default values in my parameters.

var myFunction = function(number, power = 2){




The whole point is that most of the time I will want to square a number, but some time I may want to do another power. When you run the above example, you get an unexpected token error. Which is surely due to the "=" in the function definition.

How can I set default parameters?


You can do that easily using: Besides, yo have some missing brackets and you will have to use number inside the function where you places a.

var myFunction = function(number, power){

if (power === undefined || power === null){var power = 2}

return ee.Number(number).pow(power);


  • Excellent! I was stuck in R mode, where the default values are placed in the brackets of the variable declarations. – Sean Roulet Jan 15 at 13:25
  • 1
    it could be simpler using power = power || 2 instead of if (power === undefined || power === null){var power = 2}, at least for checking undefined and null – Rodrigo E. Principe Jan 15 at 16:51
  • what you mean is that if power is undefinded or null then it will always default to 2? – Sean Roulet Jan 15 at 18:38
  • yes, that is exactly what it means, both approaches – Rodrigo E. Principe Jan 16 at 10:24

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