Introduction to JavaScript

Course Description

Overview

JavaScript is a versatile and widely used programming language for creating dynamic and interactive web applications. This live instructor-led (online) course is aimed at beginner developers who want to use JavaScript to build interactive websites, manipulate data, and improve user experiences.

Upon completion of this course, participants will be able to:

Use JavaScript to create dynamic and interactive websites.
Create scripts that work across all browsers.
Write clean, reliable, and reusable code.
Execute scripts using the DOM.
Manipulate data using JavaScript.

Book this course

Format: Remote
Language: PL
Type: Public course with a guaranteed date (entire groups and individuals can join)
Date: 21.10.2026
Duration: 3 days (21 hours)

BOOK NOW - 3870 PLN

Net price per participant.

Course Format

Interactive lecture and discussion.
Lots of exercises and practice.
Hands-on implementation in a live-lab environment.

Prerequisites

Basic knowledge of HTML and CSS
Familiarity with general programming concepts

Audience

Web developers
Software engineers
Anyone who wants to learn JavaScript for web development

Course Outline

Introduction to JavaScript and Functions

What is JavaScript?
JavaScript through time
When and where to use JavaScript
When and where not to use JavaScript
Web scripting basics
Adding JavaScript to a web page
Writing JavaScript statements
Using variables
Working with operators
Capturing mouse events
General syntax
Calling functions
Variable scope
Arrow functions
Setting default parameters

DOM Objects and Built-in Objects

User interaction
Selecting elements by ID
Accessing browser history
Using the location object
Using dates and time

Working with Numbers and Strings

Numbers
Global methods
The Number object
The Number() function
Booleans
null and undefined values
Strings
Template literals

Storing Data in Arrays

Arrays
How to iterate through arrays
Spread operator

Event Handling in JavaScript and Program Flow Control

Event types
Event handling
Event object
Conditional statements
Loops and control structures
How to set and use timers

DOM Scripting

DOM nodes
Selecting elements using getElementsByTagName()
How to read element attributes
DOM Inspector in Mozilla and Chrome
What is JSON? Introduction

JavaScript Programming, HTML and CSS Manipulation

Important elements
Drag and drop
Local storage
How to work with local files
The style property in DOM
How to access classes using className
DOM styleSheets object
How to reference CSS3 properties in JavaScript
How to set CSS3 properties

Summary and Next Steps

Frequently Asked Questions (FAQ)

Who is the Introduction to JavaScript course intended for, and what are the prerequisites?

The course is aimed at beginner web developers and software engineers, requiring only basic knowledge of HTML and CSS, as well as general programming concepts. During the sessions, participants learn from scratch how to use JavaScript to build dynamic and interactive web applications and manipulate data.

In what format and when does this JavaScript fundamentals course take place?

The course is conducted live online with an instructor, in Polish, with a guaranteed date of October 21, 2026. It is a 3-day public course (totaling 21 hours of training), which both individuals and entire groups can join at any time with 100% certainty that the course will take place.

What practical programming skills will I learn in this course?

In this course, you will learn to write clean code, create cross-browser scripts, and manipulate elements using DOM (Document Object Model) objects. The curriculum also covers practical work with arrow functions, arrays, events (e.g., mouse events), JSON format, local data storage, and dynamic modification of CSS and HTML properties directly from JavaScript code.

What is the cost of participating in the "Introduction to JavaScript" course?

The cost of participation in the course is 3870 PLN net per participant. This price includes 21 full hours of interactive lectures and discussions with the trainer, as well as extensive hands-on exercises completed directly in a live-lab environment, ensuring effective consolidation of new developer skills.

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Public courses

Knowledge sharing and networking with professionals from various industries.
Interactive, live-taught classes — not just theory, but also exercises and discussions.
Flexible online format — join from anywhere.