Add id to array of objects - Javascript

Question

I have an array of objects. How do I add an id key to them starting from 1.

[
{
    color: \"red\",
    value: \"#f00\"
},
{
    color: \"green\",
    value: \"         


        

Answer 1

  source.map((s, i)=> s.id = i+1); 
   console.log(source)