Performing the subtraction operation without the subtraction operator in JavaScript

We are required to write a JavaScript function that takes in two numbers and returns their difference but without using the (-) sign.

Therefore, let’s write the code for this function −

Example

The code for this will be −

const num1 = 56;
const num = 78;
const subtractWithoutMinus = (num1, num2) => {
   if(num2 === 0){
      return num1;
   };
   return subtractWithoutMinus(num1 ^ num2, (~num1 & num2) << 1);
};
console.log(subtractWithoutMinus(num, num1));

Output

The output in the console will be −

22

AmitDiwan

e

Updated on: 19-Oct-2020

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