ES6 example of handling Multiple Return Value from a function and application of Destructuring

es6-multiple-return-value-and-object-destructuring.js

/**
A simple example showing how Multiple return values are handled in ES6 and then further modified it using Object Destructuring.
I have used ES6 function syntax and ES6 template literal approach in this example.
*/

// Function to return multiple values (properties) bundled inside a JavaScript object.

const compoundInterestCalculator = ( amount, roi, compoundingTimesPeryear, years ) => {
  const maturityAmount = (amount * Math.pow((1 + (roi/(compoundingTimesPeryear*100))), (compoundingTimesPeryear*years)));
  
  const objOutput = {
    depositAmount: amount,
    rateOfInterest: roi,
    noOfYears: years,
    interestAcumulated: maturityAmount - amount,
    maturityValue: maturityAmount
  }

  return objOutput;
}

// Call the function to get the object with multiple properties.
const calculated = compoundInterestCalculator( 150000, 6.5, 1, 5 );

//Show the complete object - the return value
console.log(calculated);

// Destructure return value
const {maturityValue, interestAcumulated} = calculated;

// Output from Destrured object
console.log(`Maturity value: ${maturityValue.toFixed(2)}.\nInterest gained: ${interestAcumulated.toFixed(2)}`);

/**
NOTE:
Rather than storing function's return value in a variable we can Destrucure it immediately and use in output like below:

const {maturityValue, interestAcumulated} = compoundInterestCalculator( 100000, 6.5, 1, 5 );
console.log(`Maturity value: ${maturityValue.toFixed(2)}.\nInterest gained: ${interestAcumulated.toFixed(2)}`);
*/


/**
Output:
--------------------
*/
  
{
  depositAmount: 150000,
  interestAcumulated: 55512.9995123437,
  maturityValue: 205512.9995123437,
  noOfYears: 5,
  rateOfInterest: 6.5
}

Maturity value: 205513.00
Interest gained: 55513.00