React - Udemy

Question 1

React

Answer 1

• A JavaScript library for building user interfaces
• Makes building complex, interactive, reactive UI’s simpler
• Component based
• Uses declarative approach
• Always define the desired target state (and let React figure out the actual JS DOM instructions) instead of DOM manipulation and creation?

Question 2

What are components?

Answer 2

• individual, reusable building blocks used to build user interfaces

Question 3

Why components?

Answer 3

• reusable: DRY
• separate of concerns: instead of a large file with all the HTML and JS, we separate each component by functionality and purpose/task

Question 4

How is a component built?

Answer 4

• combine HTML, CSS, JS to build individual components

- then combine all these components together to build an application/UI