Guess the output #4

Guess the output #4

Question:

var x = 1;
var output = (function () {
  delete x;
  return x;
})();

console.log(output);

Output:

1

Explanation: 

1. In JavaScript, the delete operator is used to remove properties from an object.
2. x is a variable, not a property of an object. The delete operator does nothing to x, so it remains unchanged.
3. The IIFE (Immediately Invoked Function Expression) returns x, which is still 1.
4. Therefore, console.log(output); prints 1.