Given:

let x = {value: 1};
let y = x;
x = {value: 2};

Context:

What happens after executing this code?

const div = document.createElement('div');
const copy = div;
div.style.backgroundColor = 'red';
console.log(copy.style.backgroundColor);

Given:

let x = 10;
let y = x;
y = 20;

What does this print?

const str = "World";
console.log(str[0]);

Context:

function getHumanChoice() {
  const choice = prompt("Enter rock, paper, or scissors:");
  return choice.trim().toLowerCase();
}

What does this log?

const key = "age";
const person = {name: "John", age: 30};
console.log(person[key]);