Question

What is the output of the following code? let count = 0; (function immediate() { if (count === 0) { let count = 1; console.log(count); } console.log(count); })();

Answer 1

The code outputs '1' and '0' because of the local redeclaration of the 'count' variable within the function, which does not affect the 'count' variable declared outside.

Step-by-step explanation:

The output of the provided JavaScript code is 1 followed by 0. The code defines a variable count outside of the immediate function and initializes it with the value 0. Inside the function, it checks if the count is equal to 0, which is true. Then it declares a new local variable count with the let keyword and assigns it the value 1, which is printed to the console.

Since the inner count does not affect the outer count variable, when we print count outside of the if block but inside the function, it still refers to the original count variable, which has the value of 0.