Advanced Javascript Development Tutorials, Guides & Insights

   function createLeak() {
       const hugeArray = new Array(1000000).fill('leak');
       return () => console.log(hugeArray.length);
   }

   const leakyFunction = createLeak();
   // hugeArray is never garbage collected because it's referenced in leakyFunction

• Detached DOM nodes are elements that have been removed from the DOM tree but are still referenced in JavaScript.

The Factory Pattern is used to create objects without exposing the creation logic to the client. Instead of using new to instantiate an object, you use a factory method.

function Car(make, model, year) {
    this.make = make;
    this.model = model;
    this.year = year;
}

const CarFactory = {
    createCar: function(make, model, year) {
        return new Car(make, model, year);
    }
};

const myCar = CarFactory.createCar('Toyota', 'Camry', 2020);
console.log(myCar.make); // Output: Toyota