Records and tuples would introduce two deeply immutable data structures to JavaScript: Record, an object-like structure, and Tuple, an array-like structure.

This is much more readable and meets the definition of the data structure we set out to create. Furthermore, makePair , getFirst , and getSecond can be used to build more complicated data structures.

It does have more limitations, and JSON is more flexible. JSON also enables more complex data structures to be used in it than HTML. For example, HTML can't store values inside variables. Learn more ...