Conditionally initializing a constant in Javascript

Question

ES6 onwards we have const.

This is not allowed:

const x; //declare first
//and then initialize it
if(condition) x = 5;
else x = 10;
         


        

Answer 1

Assuming that the const is going to be declared in both instances, you could use a ternary assignment:

const x = condition ? 5 : 10;