The third rule of javascript this keyword example

ruleThree.js

// Rule #3 example
function RuleThree() {
  this.value = 'Some value for rule #3';
  this.printValue = function() {
    console.log('Rule three value >>>>', this.value);
  }
}

const ruleThreeInstance = new RuleThree();
const ruleThreePrintValue = ruleThreeInstance.printValue;
ruleThreePrintValue();