How can this function run?

Question

function show() {
  return value;
}

let value = 1000


console.log(show());

I guess let is the local variable but I don't understand why this coding returns 1000

I thought an message would appear

value is not defined

Because your `value` variable and `show()` function are in the same scope — firatozcevahir, Oct 14 '20 at 13:30

score -1 · Answer 1 · answered Oct 14 '20 at 13:34

The problem here, is that the variable is declared in the global scope, so regardless of using let it becomes global.

You can use let insisde a block, and that binding then will be visible only inside the block.

1 Answers1