The second rule of javascript this keyword example

ruleTwo.js

// Rule #2 example
function RuleTwo() {
  this.value = 'Some value for rule #2';
  this.printValue = function() {
    console.log('Rule two value >>>>', this.value);
  }
}

const ruleTwoInstance = new RuleTwo();

// Original value of 'this' used here
ruleTwoInstance.printValue();

// Bounded value is used here
ruleTwoInstance.printValue.bind({ value: 'Bound value' })();