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Examples

JavaScript Program to Find the Largest Among Three Numbers

Finding the largest among three numbers is a common exercise for beginners in JavaScript programming. This tutorial will demonstrate how to accept three inputs, compare them using different methods, and determine the largest value.

By understanding these methods, you’ll gain deeper insights into logical operations, conditional statements, and JavaScript’s built-in functions. Mastering this concept is a stepping stone to solving more complex programming challenges.

Find Largest Among Three Numbers in JavaScript Using if-else Statements

The if-else conditional statement provides a straightforward approach to finding the largest among three numbers.

Code

function findLargest(a, b, c) {
  if (a >= b && a >= c) {
    console.log(`${a} is the largest number`);
  } else if (b >= a && b >= c) {
    console.log(`${b} is the largest number`);
  } else {
    console.log(`${c} is the largest number`);
  }
}
// Example Usage
findLargest(10, 20, 15);
findLargest(25, 20, 30);

Output

20 is the largest number
30 is the largest number

Explanation

  • Compare a with b and c to see if it’s the largest.

  • If not, check if b is greater than or equal to the others.

  • If neither is true, c is the largest.

JavaScript Program to Find the Largest Among Three Numbers Using Ternary Operators

Ternary operators can simplify the logic to find the largest number.

Code

function findLargest(a, b, c) {
  let largest = (a >= b && a >= c) ? a : (b >= a && b >= c) ? b : c;
  console.log(`${largest} is the largest number`);
}
// Example Usage
findLargest(5, 12, 7);
findLargest(9, 3, 9);

Output

12 is the largest number
9 is the largest number

Explanation

  • The first condition checks if a is the largest.

  • If false, the second condition evaluates if b is the largest.

  • Otherwise, c is assigned as the largest.

JavaScript Program to Find the largest of 3 Number Using Math Function

JavaScript’s Math.max function provides a concise way to find the largest number.

Code

function findLargest(a, b, c) {
  let largest = Math.max(a, b, c);
  console.log(`${largest} is the largest number`);
}
// Example Usage
findLargest(8, 14, 3);
findLargest(22, 11, 15);

Output

14 is the largest number
22 is the largest number

Explanation

  • Math.max takes any number of arguments and returns the largest value.

  • It eliminates the need for explicit comparisons, making the code more concise.