Both prefix and postfix operators are used to mutate and update values. And both
++i alone does the same thing, increment the value of i by 1. This can sometimes be confusing for some beginners.
The difference can be found when assigned to other variables. For example:
let i = 0; let j = i++; // first assigns to j then increments i by 1 console.log(j); // 0 let k = ++i; // first increments i by 1 then assigns to k console.log(k); // 2