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Rediscovering JavaScript: ES6, ES7 & ES8

Solution Review: Lint the Code

Learn how to solve the problem in the previous lesson.

We'll cover the following...

Solution

Let’s take a look at the solution code given below.

Javascript (babel-node)
'use strict';
const isPerfect = function(number) {
  let sumOfFactors = 0;
  for(let index = 1; index <= number; index++) {
    if(number % index === 0) {
      sumOfFactors += index;
    }
  }
  return sumOfFactors === number * 2; 
};
for(let i = 1; i <= 10; i++) {
  console.log('is ' + i + ' perfect?: ' + isPerfect(i));
}

Explanation

  • First of all, use strict; is applied to the code to make the code secure.

  • In line 2, the function is defined using ...