JavaScript development | | Software Development

JavaScript development
In this training we look at JavaScript (EcmaScript 2015+), using JavaScript for working in browsers (UI events, manipulating HTML with DOM CSS), JavaScript modules (NPM, Webpack), working with the server (HTTP protocol, REST, AJAX, Axios, WebSocket).
40 hours
JavaScript development
Sign Up
40 hours
Schedule and prices
18.07.2023 - 31.07.2023
€ 800 *
Training for 7-8 or more people? Customize trainings for your specific needs
JavaScript development
Sign Up
40 hours
Schedule and prices
18.07.2023 - 31.07.2023
€ 800 *
Training for 7-8 or more people? Customize trainings for your specific needs


In this training we look at JavaScript (EcmaScript 2015+), using JavaScript for working in browsers (UI events, manipulating HTML with DOM CSS), JavaScript modules (NPM, Webpack), working with the server (HTTP protocol, REST, AJAX, Axios, WebSocket). It is also a first step towards learning Angular and React web frameworks.

The training also covers subjects such as using OOP, working with JSON, and functional programming. You’ll learn in detail how to work with classes, objects, arrays, dates, immutability and asynchronicity.
After completing the course, a certificate
is issued on the Luxoft Training form


  • Develop a good understanding of JavaScript capabilities
  • Get a solid basis for further usage of web frameworks such as React or Angular
  • Learn the language’ structure and syntax, and its object model
  • Detailed review of the DOM model for HTML document as well as CSS
  • Get to grips with techniques for managing DOM and CSS using JavaScript
  • Learn event handling models and form creation, and get an overview of JSON and Ajax technologies, asynchronicity and working with the server

Target Audience

  • Web developers


  • Knowledge of HTML and CSS. Experience in development in any C-like language (C, C++, Java, C#) is desirable.


  • JavaScript Language

    • JavaScript versions and implementations
    • JavaScript application scope (browser, server side, mobile development)
    • Data types: String, Number, Boolean (notions of truthy and falsy)
    • Operators, operator priorities
    • Declaring variables: var, const, let
    • Loops: while, for, for … in, for …of
    • Working with numbers and strings
    • Values null and undefined: differences and use cases
    • Working with the console
    • Exceptions in JavaScript
  • JSON, objects and arrays

    • JSON format, examples
    • JSON.parse and stringify
    • Objects, working with Object class
    • Creating objects (using the literal {}, operator new, method create)
    • Prototype inheritance, __proto__ reference
    • Getters and Setters
    • Operator in and hasOwnProperty, notion of enumerable properties
    • Method toString(), calling and overriding the method
    • Method valueOf(),calling and overriding the method
    • Creating arrays: literals and new Array()
    • Automatically changing of the array size
    • Getting and setting the array length, array truncation
    • Using methods join() and concat()
    • Using method sort, setting the order of array sorting
    • Using methods slice and splice
    • Using methods push, pop, shift, unshift: creating a stack or queue
  • Working with date and time

    • Using constructor new Date()
    • Notion of computer representation of date as time elapsed since Epoch
    • Using getTime() and setTime()
    • Parsing the date string
    • Options for creating strings in JS: using single and double quotes
    • String interpolation (string in apostrophes)
    • Quoting of special characters in a string
    • String concatenation, upper and lower case
    • Searching for a substring with indexOf() and lastIndexOf()
    • Selecting a substring with substring() and substr()
    • Using methods includes, endsWith, startsWith
  • Using JavaScript in browser: DOM Model

    • Managing the browser window, document, events, and layout (CSS)
    • Window object and its application
    • Connecting JavaScript code to HTML page
    • Sequence of scripts execution on the page
    • Caching scripts, CDN servers, JavaScript force reloading
    • Using references, connecting JavaScript to references
    • The onload event and its use
    • XSS attacks against web sites
    • Working with DOM: using window, document, childNodes
    • Manipulating a document using DOM: creating, deleting, moving elements
    • Using getElementById(), getElementsByTagName(), getElementsByClassName() for searching elements on a page
    • Using methods and properties of HTMLDocument and HTMLElement
  • Events in Browser

    • Notion of event-driven programming
    • Event handlers and listeners
    • Attaching event handlers with addEventListener()
    • Properties and methods of Event class
    • Events bubbling and capturing
    • Stopping propagation
    • Window events
    • Mouse and keyboard events, special properties of events
    • Form Events
  • Working with CSS and Managing Styles

    • CSS standard, main properties of CSS
    • Common styles and styles of separate elements
    • Cascading styles
    • CSS selectors
    • Changing CSS with JavaScript
    • CSS box model: margin, padding, border
    • Managing element visibility: visibility and display
    • Positioning of elements: absolute, fixed, relative, setting top and left
    • Units of measurement – px, pt, etc.
    • Element overflow and managing through the overflow property
    • Managing document layers: zIndex property
    • Animation, moving elements
    • Working with classes, setting className
    • Working with visibility and transitions
    • Method querySelectorAll()
  • Working with Modules in JavaScript, NPM, Webpack

    • Reasons for using modules
    • Export from module
    • Import from module
    • Re-export
    • Working with NPM, package.json
    • The node_modules folder, loading packages with NPM
    • Global and local installation of packages
    • Using Webpack for package assembly
    • CSS and TypeScript loaders
    • Configuration of webpack.config.js
    • Creating a bundle, compressing
    • Webpack plugins
    • Using legacy modular systems – CommonJS and AMD
    • Using CommonsChunkPlugin, multiple entry points
    • Hot module replacement (HMR)
  • Classes and Inheritance in JavaScript

    • Prototype inheritance, reference __proto__
    • Object prototype
    • Using instanceof
    • Keyword class, creating classes
    • Keyword super
    • Using the method Object.assign()
    • Using the method Object.defineProperty()
    • Getters and setters
    • Spread operator for working with objects and arrays
    • Destructuring of array and object
  • Functional Programming in JavaScript

    • Functions as variables
    • Array arguments
    • Class Function, methods call() and apply()
    • Method bind(), installing this and some parameters with bind
    • Closures in JavaScript
    • Encapsulation of values with closures
    • Creating a function through the Function constructor: constructing a string
    • Arrow functions, examples of using them
    • Functional manipulation with array: find, findIndex, filter
    • Examples of using map/filter/reduce for data processing in an array
  • Immutability, Testing, MVC Pattern

    • Notion of immutability, its advantages
    • Mutable and immutable methods for changing objects and arrays
    • Notion and benefits of Virtual DOM
    • Testing immutable functions, using Jest
    • Memoization, its advantages
    • Common errors and recommendations for using functional programming
    • MVC pattern, creating a user interface
    • Overview of main libraries for interface development: Angular, React, Vue
  • Asynchronicity in JavaScript. Promises

    • Notion and necessity of asynchronicity
    • Working with setTimeout, setInterval, clearTimeout
    • Callback functions
    • Loss of this in using a callback function. Solutions (using bind, arrow functions, etc.)
    • Notion of promises, return of Promise from asynchronous function
    • Method Promise.all(), its application
    • Async/await syntax, options of using, restrictions
    • Handling exceptions: Promise reject, exception handling in case of asynchronous calls
  • Working with the server. HTTP Protocol. REST Services

    • HTTP protocol
    • HTTP headers and methods (GET, POST, PUT, DELETE, etc.), data transfer
    • HTTP servers (overview)
    • HTTP server response codes
    • Using forms for data uploading
    • Uploading data to server with AJAX
    • REST architecture: advantages and peculiarities
    • Implementation of CRUD (Create/Read/Update/Delete) with REST
    • Using the fetch() function for getting and sending data
    • Documenting REST services with Swagger
    • Notion of HATEOAS, using it
  • AXIOS Library. WebSocket Protocol

    • Comparison of high-level Axios library and using low-level fetch() method
    • GET and POST requests in Axios
    • Using async/await with Axios
    • Error handling in using Axios
    • Cancelling a request with Axios
    • WebSocket Protocol
    • Examples of using WebSocket, comparison to HTTP
  • Show Entire Program
Schedule and prices
18.07.2023 - 31.07.2023
Duration:40 hours
€ 800
Sign Up
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Tudose, Florin-Catalin Florin-Catalin
Java and Web Technologies Expert
Catalin is an experienced and dedicated software engineer with expertise in a variety of areas such as requirements analysis, project management (Waterfall and Agile), people management, Java technologies, database design, software architecture and software technologies for Enterprise Applications. Between 2003 and 2015 he has held several roles in telecommunications and financial projects, from Java senior developer to Java technical team lead and architect.

In addition to his role as a software engineer, Catalin has also been involved in developing and facilitating trainings on programming and databases for companies and universities. He has delivered courses on subjects such as Java, Web technologies, analysis of algorithms, SQL and database design.

Since 2012, he has conducted more than 4000 hours of courses in the Luxoft Training Center. He is the author or a coauthor of the following courses:

Catalin was also the lead facilitator for the Corporate Junior Program (CJP) which took part in Luxoft Poland (Krakow and Wroclaw). This program has prepared about 50 new Java developers to join delivery projects inside the company.

Together with Luxoft, he initiated and introduced the “Advanced Java Programming” course for the students pursuing their master’s degree at the Faculty of Automation and Computer Science in Bucharest.

He is an Agile Certified Scrum Master with a deep understanding of project management techniques and plenty of experience in managing software development projects.
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Our trainers are industry experts, involved in software development project
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