Do you know what will be the output of this code? const x = 1; x = 2; console.log(x);

What happens when you reassign a const in JavaScript?

Do you know what will be the output of this code?

JavaScript

const x = 1;
x = 2;
console.log(x);

Show answer and explanation

The answer is TypeError: Assignment to constant variable.

const creates a binding that can’t be reassigned. The code throws before console.log runs. Use let when a variable needs a new value later.