# React feature

1-virtual Dom
2-uni diraction
3-server side rendering
4-reuseable component

Component and

# state:--component ek object jo change kar sakte hai.

# props:--property ko pass ya define.

# props and state difference?

# state or pros ko kyon manage karta hai?
state or props dono hi component ke dura manage hota hai

props ko parent component manage karta hai
state ko component manage.

# component main state or function main state kaise update hoti hai?

state main setState ke through or function main useState ke through state change karte hai.

# What are Pure Components?
React.PureComponent is exactly the same as React.Component except that it handles the shouldComponentUpdate() method for you.or React.Component main wo aapko khud likhni padhti hai.

# higher order component?
# What is the difference between Element and Component??