What does this snippet do?

Checks if a given input is both:

• An integer
• Divisible by 2 (i.e., even)

This is useful to avoid edge cases with floats (like 4.0) or strings ("6").

✅ Preview

const isEven = num => Number.isInteger(num) && num % 2 === 0;

isEven(4);      // true (valid even integer)
isEven(7);      // false (odd integer)
isEven(2.5);    // false (not an integer)
isEven("6");    // false (string, not number)

📌 Why is this useful?

• Safer and more robust check for even numbers.
• Works well with user inputs, form validation, APIs, etc.
• Avoids bugs from non-integer inputs like strings or floats.

📅 Date Modified

2025-07-23