javascript - Combine objects values into the single object

Question

I have two objects -

a = {0:"hai",1:"hello"}
b = {0:"what",1:"you"}

I want to get a resulting object on merge of the following format

c = {0:"hai",1:"hello",2:"what",3:"you"}

I tried different merge techniques, but fail to achieve this. What are the optimal ways of achieving the above?

Answer 1

Here's a solution that essentially converts the objects to arrays then merges them together using Array.prototype.concat:

Object.assign([], {0:"hai",1:"hello"}).concat(Object.assign([], {0:"what",1:"you"}))