react

- difference between virtual dom and real dom
VD is memory wastage is minimal and in RD there is lot of memory wastage
in VD only the element is updated and in RD the entire DOM is updated if an element is updated
IN VD it cannot manipulate HTML directly and in RD it can manipulate HTML directly
VD updates faster than real dom
a VD is a copy of real dom


- what is react js
react is js library created by facebook in 2011 for frontend developement


- important features of react
it uses virtual dom
it has one directional data flow model

- what is jsx
it is javascript xml. 
it has html code with js code


- can browsers read jsx files
no, it browsers cannot read jsx files,