How do I copy the value of a single element from a JavaScript array into another array at the same position?

Question

If I want to clone an array, I can use the slice() function, but what if I want to "clone" a single element? I want to do something like this:

array1[i] = array2[i];

but I want to copy the value, not the reference. How can I do this? Also, will the solution work for associative arrays too? For example:

array1["one"] = array2["one"];

Thank you in advance.

Answer 1

You could use Object.assign and Array.splice

   var cloneItem = Object.assign({}, array1[i]);
   array2.splice(i, 0, cloneItem);

EDIT
The previous adds a clone item in the position, pushing the rest of the elements to the right. If you simply want to replace just do

array2[i] = Object.assign({}, array1[i]);