Advanced JavaScript Mastery

Advanced JavaScript Mastery

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1. Classes

Learn the fundamentals of JavaScript classes, from class declarations to defining methods that enhance functionality. Discover how to use parameter objects effectively, manage private properties, and control access with getters and setters. Master static properties and static methods and unlock the power of class inheritance using "extends" and "super()" to build scalable and reusable code.

Welcome to the Course

Class Declaration

Challenge: Building a Class

Challenge: Adding Methods to a Class

Parameter Object

Private Properties

Challenge: Implementing Private Properties in a Class

Getters and Setters

Challenge: Managing Properties with Getters and Setters

Static Properties

Challenge: Using Static Properties and Methods in a Class

Inheritance with extends and Using super()

Challenge: Class Inheritance with Extends and Using Super

2. DOM Manipulation

Master DOM manipulation to create dynamic, interactive web applications. Navigate and modify the DOM's structure, dynamically update content, and implement best practices for security and performance. Differentiate between properties and attributes to optimize your code.

What is the DOM?

Querying the DOM

Challenge: Querying the DOM

Understanding the DOM Hierarchy

Challenge: DOM Hierarchy

DOM Properties

Working with Element Attributes

Challenge: Working with Element Properties and Attributes

Adding Elements

Removing Elements

Challenge: Adding and Removing Elements

Modifying Element Styles

Challenge: Modifying Element Styles

3. Events and Event Handling

Unlock the interactivity of your web applications by mastering JavaScript events. Understand event propagation, control event behavior, and implement efficient event handling for user interactions. Optimize performance with advanced techniques like event delegation.

Introduction to Events and Event Listeners

The Event Object

Challenge: Events and Event Listeners

Event Propagation and Delegation

Challenge: Event Propagation and Delegation

Keyboard and Mouse Events

Managing Event Listeners

4. Asynchronous JavaScript and APIs

This section covers the essentials of asynchronous JavaScript, including callbacks, Promises, and async/await. You’ll learn to fetch data from APIs, integrate third-party libraries, and handle multiple requests efficiently, building skills for creating data-driven applications.

Introduction to Asynchronous JavaScript

Working with APIs

Practical API Integration

Challenge: Working with API

Working with Third-Party Libraries

Challenge: Working with Third-Party Libraries

Handling Multiple Asynchronous Requests

Зміст курсу

Advanced JavaScript Mastery

Advanced JavaScript Mastery

1. Classes

Welcome to the Course Class Declaration Challenge: Building a Class Class Methods Challenge: Adding Methods to a Class Parameter Object Private Properties Challenge: Implementing Private Properties in a Class Getters and Setters Challenge: Managing Properties with Getters and Setters Static Properties Static Methods Challenge: Using Static Properties and Methods in a Class Inheritance with extends and Using super()Challenge: Class Inheritance with Extends and Using Super

2. DOM Manipulation

What is the DOM?Querying the DOM Challenge: Querying the DOM Understanding the DOM Hierarchy Challenge: DOM Hierarchy DOM Properties Working with Element Attributes Challenge: Working with Element Properties and Attributes Adding Elements Removing Elements Challenge: Adding and Removing Elements Modifying Element Styles Challenge: Modifying Element Styles

3. Events and Event Handling

Introduction to Events and Event Listeners The Event Object Challenge: Events and Event Listeners Event Propagation and Delegation Challenge: Event Propagation and Delegation Keyboard and Mouse Events Managing Event Listeners

4. Asynchronous JavaScript and APIs

Introduction to Asynchronous JavaScript Callbacks Promises Async/Await Working with APIs Practical API Integration Challenge: Working with API Working with Third-Party Libraries Challenge: Working with Third-Party Libraries Handling Multiple Asynchronous Requests

DOM Properties

JavaScript provides several properties to access and manipulate the content. Understanding these properties allows you to dynamically update the content of web pages based on user interactions or other conditions.

InnerHTML

The innerHTML property allows you to get or set the HTML content of an element, including tags and text. It is one of the most commonly used properties for dynamically updating page content.

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The innerHTML retrieves all the content, including HTML tags, and allows for inserting or updating content with HTML tags.

TextContent

The textContent property gets or sets the text content of an element, stripping out any HTML tags. It's ideal when you need to work with plain text without considering the HTML structure.

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The textContent retrieves text content only, ignoring HTML tags, and sets plain text, automatically escaping any tags.

Value

The value property is used with form elements like <input>, <textarea>, and <select>, allowing you to get or set the value entered by the user.

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The value retrieves the current value of form elements and sets a new value for input, textarea, or select elements.

Differences Between InnerHTML and TextContent

Practical Example: Updating a User Profile

Imagine a user profile page where initial data is displayed, and the user can update their profile details using a form. When the user submits the form, the content on the page updates dynamically.

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Initially, the profile displays a predefined username and bio, which can be modified through input fields. When the "Save Changes" button is clicked, JavaScript updates the displayed profile: textContent updates the username as plain text, while innerHTML updates the bio to allow for basic HTML formatting, reflecting any edits the user makes.

1. What does the `innerHTML` property do?

2. When would you use `textContent` instead of `innerHTML`?

3. What will the following code output?

4. Which property is used to get or set the value of an `<input>` element?

What does the innerHTML property do?

Виберіть правильну відповідь

It retrieves only the text content of an element.

It gets or sets the HTML content of an element, including tags and text.

It retrieves the value of an input field.

It only retrieves child nodes of an element.

When would you use textContent instead of innerHTML?

Виберіть правильну відповідь

When you need to set or retrieve content as plain text, without HTML tags.

When you want to add multiple child elements.

When you need to set HTML with tags.

When working with input elements.

What will the following code output?

Виберіть правильну відповідь

Hello, <strong>World!</strong>

Hello, World!

<strong>World!</strong>

World!

Which property is used to get or set the value of an <input> element?

Виберіть правильну відповідь

textContent

innerHTML

value

placeholder

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