find it a number is odd in javascript

To check if a number is odd in JavaScript, we can use the modulus operator %. The modulus operator gives us the remainder of a division operation. If we divide an odd number by 2, there will be a remainder of 1. So, checking if the remainder of the number divided by 2 is 1 will tell us if the number is odd or not. Here's an example:

index.tsx
const isOdd = (num) => {
  return num % 2 === 1;
}

// Examples:
console.log(isOdd(5)); // true
console.log(isOdd(8)); // false
console.log(isOdd(0)); // false
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We define a function called isOdd which takes a num parameter. Inside the function, we use the modulus operator to check if num divided by 2 has a remainder of 1. If it does, we return true, which means the number is odd. If there is no remainder, we return false, which means the number is even. We then call the function with some example numbers to demonstrate how it works.