JavaScript Program to Swap Two Variables

let a = prompt('Enter the first variable: ');
let b = prompt('Enter the second variable: ');

//create a temporary variable
let temp;

//swap variables
temp = a;
a = b;
b = temp;

console.log(`The value of a after swapping: ${a}`);
console.log(`The value of b after swapping: ${b}`);

Output:

Enter the first variable: 4
Enter the second variable: 2
The value of a after swapping: 2
The value of b after swapping: 4