vslipchenko

Angular framework topics organized in levels (from simple L1 to harder L5)

Level 1

• What is standalone API?
  • What standalone APIs do you know? (Standalone components/pipes/directives, Router standalone API, HttpClient standalone API, etc.)
  • What are benefits of using them? (less boilerplate, no dependency on modules - module-less, smaller bundle size, concise code, possibility of dropping ZoneJS, etc.)
• Explain the main building blocks of an Angular application and their data flow
  • components
• directives

vslipchenko

// Symbols are used in order to not confuse these special values with the real request response values
// Unique primitive value used as the stale request response value
const staleRequestSymbol = Symbol('staleRequest');
// Unique primitive value used as a response value of non-distinct payload requests
const nonDistinctPayloadSymbol = Symbol('nonDistinctPayload');
// Map are used to guarantee the integrity of request specific context if a single request
// is re-created more than once in a process
const requestsCache = new Map();
const requestsContext = new Map();
// Enum

vslipchenko

/* Show custom scrollbar on devices with a large display (laptops, desktops, etc.) 
   as smaller devices usually have a neat scrollbar already */
@media (min-width: 992px) {
  /* Firefox */
  @supports (scrollbar-width: thin) {
    * {
      /* First collor is responsible for the thumb color, the second one - for the track color */
      scrollbar-color: #b9b9b9 #f0f0f0;
      scrollbar-width: thin;
    }

vslipchenko

Technical:
1. OOP principles
2. Differences between abstract class and interface
2. Software Development Principles (SOLID, DRY, KISS, YAGNI, etc.)
3. Event loop, micro and macro tasks, queueMicrotask(). Difference between queueMicrotask() and Promise.resolve()
4. What is call stack. How it works ?
5. Data structures (hashmap, linked list, etc.)
6. Architectural and design patterns in JS
7. Diferences between local storage, session storageand document cookie. When to use each ?
8. What is Flux (architectural pattern) ? Describe it's core concepts