React Js for Web Development > Class Based Components

States in Class Based Components

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The state is a React Component instance. A class is an object with a set of observable characteristics that regulate the component's behaviour. In other words, a component's State is an object that contains information that may change over the component's lifespan.

The state object is a built-in React object that holds data or information about the component. The state of a component can change over time, and when it does, the component re-renders.

React uses a simple JavaScript object called state to encapsulate information about the current state of a component. It's taken care of by the component (just like any variable declared in a function).

It's straightforward to create a class component; simply declare a class that extends Component and includes a render function. You can use it in any other component after that. It is not necessary to define one component per file, however it is a good idea.

Internal "state" in React components refers to a group of key-value pairs that belong to the component. React re-renders the component when the state changes. State could previously only be used in class components. You may also use hooks to apply state to functional components.

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  1. About Course
    4m 35s
  2. What is React
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  3. Single Page Application
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  4. Why Choose React for Web Development?
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  5. Real Time Example
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  6. React VS Angular VS vue
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  7. Setting up the first project
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  1. Components in React
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  3. Installation of Node
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  4. Creating the First Project
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  5. Understanding File Structure
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  6. Understanding Index.js
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  7. Introduction to JSX
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  8. Custom Components
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  9. Assignmnet : Introduction
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  10. Assignment : Components
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  2. Adding Styles in JSX React
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  3. Dynamic Data in JSX React
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  1. Event Listening in React
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  2. Event Handling in React
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  3. States in React
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  1. Course Summary
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  1. Interview Questions in React js
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  1. Career Guideline
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