1.Null vs Undefined.

Null is a special value meaning “no value”. null is a special object because type of null returns ‘object’.
On the other hand, undefined means that the variable has not been declared, or has not been given a value.

Null means an empty or non-existent value. Null…

1.React & its history

React is an open-source, front end, JavaScript library for building user interfaces or UI components. It is maintained by Facebook and a community of individual developers and companies. React can be used as a base in the development of single-page or mobile applications.

It was first…

1.Error Handling

Errors is a part of code so it appears every times in code. So all the time we need to handle errors. there are some keywords for error handling in JavaScript.

try{}
catch{}
through{}
finally{}

  1. try statements let you test a block of codes for error.
  2. catch statements…

Md. Nur-E-Alom Siddiky

A progressive JavaScript Developer and part time writer.

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