Why is [1,2] + [3,4] = “1,23,4” in JavaScript?

Question

I wanted to add the elements of an array into another, so I tried this:

[1,2] + [3,4]

It responded with:

\"1,23,4\"
         


        

Answer 1

It looks like JavaScript is turning your arrays into strings and joining them together. If you want to add tuples together, you'll have to use a loop or a map function.