Web Application Developer Interview Questions and Answers

The 'this' keyword refers to the current object in a method or constructor.

• Used to refer to the current object within a class

• Can be used to pass the current object as a parameter to another method

• Helps differentiate between instance variables and local variables with the same name

React components are reusable UI elements that manage their own state and lifecycle methods control the behavior of components.

• React components are reusable UI elements that can be composed together to build complex user interfaces.

• Components can manage their own state, which allows for dynamic and interactive user interfaces.

• Lifecycle methods in React control the behavior of components at different stages of their lifecycle, such as mounting, updating, and unmounting.

• Example...read more

I have experience deploying web applications using Docker for containerization and easy deployment.

• Utilized Docker Compose for managing multi-container applications

• Created Dockerfiles to define application environments

• Deployed applications to production servers using Docker Swarm or Kubernetes

The question is asking about the ref parameter in a URL.

• The ref parameter in a URL is used to track the source of traffic or referrals.

• It is commonly used in marketing campaigns to track the effectiveness of different sources.

• For example, a URL might look like www.example.com/?ref=facebook if the user clicked on a link from Facebook.