How many types of JavaScript are there?

There are six basic data types in JavaScript which can be divided into three main categories: primitive (or primary), composite (or reference), and special data types. String, Number, and Boolean are primitive data types. Object, Array, and Function (which are all types of objects) are composite data types.

Read more

What is function state in JavaScript?

A function of state and action is a function that takes two arguments: state and action . Functions like that are very common in the JavaScript ecosystem. For example, the reducer function used to build a Redux store is a function that takes the current state and some action and returns nothing but a new state.

Read more

What are states in react JS?

What is State? The state is an instance of React Component Class can be defined as an object of a set of observable properties that control the behavior of the component . In other words, the State of a component is an object that holds some information that may change over the lifetime of the component.

Read more