My name is Ernest and I’m Frontend developer. I love creating applications and develop myself in frontend technology.

Working knowledge

HTML

• Semantic HTML5
• Accessibility
• Forms
• Markdown

CSS

• BEM
• SASS
• Styled components
• CSS in JS
• Tailwind CSS
• Material UI
• Responsive Web Design
• Animations, variables
• Box model: flex and grid

JavaScript

• JavaScript ES6 + features
• JS: Local storage
• Variables, data types, operators
• Loops, functions, class
• Arrays, objects, prototypes
• Scopes, hoisting, closures
• Error handling
• ES6 + new string methods
• ES6 + destructuring
• ES6 + rest and spread operator
• ES6 + object literals
• ES6 + modules
• Document, window, navigator
• Query selectors, events, forms
• Ajax, fetch API
• Cookies, state, shadow DOM
• Web workers, custom browser API, service workers
• offline mode, WASM, canvas

React

• Component creation and architectures
• Styling components in different variants
• Composition and condition management of components
• React Hooks
• Component life cycle (class and hooks)
• Correct handling of forms
• Formik
• React Hooks Form
• Building the interface
• Design tools and form handling
• Solving the most common problems with React
• Writing own hooks
• Communication with REST API
• Component testing techniques
• Optimization of application operation
• React router
• Lifting state up
• Solutions in commercial applications
• Applications deployment
• Server-Side-Rendering - preparing the application for SEO
• Component state handling (class and hooks)