How to duplicate value in one object array in Javascript or jQuery?

Question

I have an object array for customization of colors on my website. It gets generated like this when the colors are selected by the user:

colours = {
  "a":["red", "green", "blue"],
  "b":["pink", "yellow", "red"],
  "c":["violet", "black"],
  //and lots more
}

What I am trying to achieve is to connect (this will vary) the value of a with d and c with x. What ever the change is done in the values of a should be the values of d. I have multiple pages like this where I have to connect different values. How can I do this is it possible? It would be nice if I could set it on the header of every page like this a=d or colours[a] = colours[d].

Answer 1

Ok i found a way, I am not sure if this is the right approach for it. On my main html page header I made another object like this:

 connections = {'a':'d', 'c':'x'};
 // the key to be connected : the key to connect to

Then in my coding page:

 for (ax in connections) {
 // this will create a loop through connections object
    var ay = connections[ax];
    colours[ay] = colours[ax];
 // this will make a and d, c and x equal in colours.

That solved the problem. Thank you all for helping and I wish this will be helpful for some one.