CallBack Function Example With Demo

 Definitaion:- Functions that are used as an argument to another function are called callback functions.

Code:-

function divideByHalf(sum){

  console.log(Math.floor(sum / 2));

}

function multiplyBy2(sum){

  console.log(sum * 2);

}

function operationOnSum(num1,num2,operation){

  var sum = num1 + num2;

 // console.log(sum)

  operation(sum);

}

operationOnSum(3, 3, divideByHalf); // Outputs 3

operationOnSum(5, 5, multiplyBy2); // Outputs 20