Why using const in a for loop does not throw an error

Question

const todolist= [];
let todolisthtml = '';
     for(let i =0;i<todolist.length;i++){
          const todo = todolist[i];
          const html = <p>`${todo}`</p>;
          todolisthtml += html;
      }

Here, whenever we iterate through the loop, we are reassigning the variable todo, which should cause an error because we declared it using "const", but it works smoothly

Answer 1

This is not a task. Just declaration and initialization.

If you write

const todolist= [];
let todolisthtml = '';
const todo;
for(let i =0;i<todolist.length;i++){
    todo = todolist[i];
    const html = <p>`${todo}`</p>;
    todolisthtml += html;
}

This would be a reallocation and is illegal.

In what you wrote, todo and html go out of scope at the end of the loop block, followed by a new todo and html is created for the next iteration.

As Jaromanda X said, const variables are block scoped. And let.