Props in React

Introduction to React Props

In React, Props are used to pass data from one component to another.
They help make components reusable, dynamic and easy to manage.

Why Props Are Important

Props allow to:

  • Reuse the same component with different data
  • Pass data from parent to child components
  • Keep components flexible and clean
  • Build dynamic user interfaces
Without props, every component would show hardcoded data, which is not paractical and unusual.

Basic Example of Props

Parent Component & Child Component




Props vs State

Props 

  • Passed from parent
  • Read Only
  • Used for display
  • Immutable

State

  • Managed inside component
  • Can change
  • Used for interaction
  • Mutable

Default Props

  • Default props are used when no value is passed

Children Prop

React automatically provides a special prop called children


Common Mistakes With Props

  • Changing props directly
  • Forgetting to pass required props
  • Using props instead of state for changing data
  • Overloading a component with too many props


When to Use Props

Use props when:
  •  Data comes from a parent component
  •  You want reusable components
  • Display only data is required








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