Move a symbol with script

Hi everybody.

In order to complete an animation, I would like to avoid to much keyframing, and use javascript to complete this simple action :

move my symbol to 10px from existing x position each 2 second.

I come from the After Effect world, and there is easy script to doing that, but i'm stuck trying to reproduce it with edge.

Did anyone can push me on the way to fix that ?

Many thanks for any solution.