Javascript is the knife in front-end programming if HTML and CSS are the bread and butter. During your interview, companies will spend a significant amount of time checking your understanding of Javascript.
The following themes will be the focus of many of the questions.
- Inheritance of prototypes
- Scoping \sClosures
- The loop of events
- the event is heating up.
- Make an application, make a phone call, and tie a knot.
- Promises and callbacks
- Hoisting with variable and function
- Currying
Figure out which of these principles you are being assessed on when given a Javascript question, and it will be a lot easier to come up with the appropriate answer.
In Javascript, design patterns provide repeatable solutions to common problems. These are a handful of the most significant design patterns to be aware of.
- Facade Observer
- MVC, MVP, MVVM
- Singleton
- Revealing module
- Decorator
- Factory
It is beneficial to be knowledgeable with Javascript frameworks and Javascript design patterns. This does not imply that you must master a new framework before the interview. Instead, understand when and why front-end developers employ frameworks.
Also, if you are interviewing for a position involving React + Flux or Angular, go over some of the frameworkâs architecture documentation beforehand.