Mastering JavaScript Basics: Your Guide to Interview Success
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Chapter 1: Introduction to JavaScript Interview Prep
Welcome to Day 21 of our 100-day journey dedicated to mastering JavaScript for interviews. This endeavor promises to be both enriching and transformative as we navigate through various concepts.
Today, we will focus on ES6 Classes and delve into some critical interview questions.
Section 1.1: Understanding Private Static Fields
One of the pivotal questions in interviews is: How can you define private static fields?
Answer:
Private static fields are added during the class's constructor evaluation and are accessible only within the class itself.
To define a private static field, we utilize the static keyword. Here are some examples:
static #test = 'test';
static myAddress = 'test';
Static fields are unique properties that belong exclusively to the class. Consider the following example:
class MyCard {
static #address = 'test address'; // static field
}
console.log(MyCard.#address);
// This allows access to the static field directly via the class, without needing an instance.
Static fields can be accessed directly through the class without creating an instance, in contrast to regular methods, which require instantiation:
class MyCard {
static #address = 'test address'; // static field
getDetail() { // normal method
return "This is my normal function, which requires an instance to work.";}
}
console.log(MyCard.#address);
// Accessing the static field directly through the class.
const card = new MyCard();
card.getDetail(); // This can only be accessed after creating an instance.
Tomorrow, we will build upon this example to explore private static methods and their accessibility.
Lastly, it's worth noting that static fields are beneficial for storing configuration settings or other essential data.
Take your time with the class concepts — happy coding, and stay tuned for more insights!
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Mastering JavaScript - Everything You Need To Know. This video covers fundamental concepts to help you ace your JavaScript interviews.
Section 1.2: Exploring Advanced JavaScript Techniques
Continuing our exploration, we’ll delve into advanced JavaScript techniques to prepare you thoroughly for your interviews.
JavaScript Mastery Complete Course. This comprehensive tutorial takes you from beginner to advanced levels in JavaScript.