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16.a React.js

Module 1 · Media Course's Objectives
Module 2 · Media What is React?
Module 3 · Media Create React App
Module 4 · Media Import Install React
Module 5 · Media Create a react component
Module 6 · Media Render HTML or JSX
Module 7 · Media Rendering component to DOM
Module 8 · Media Rendering multiple elements
Module 9 · Media Render a single outer element
Module 10 · Media React fragments
Module 11 · Media JavaScript Injection
Module 12 · Media Conditional rendering
Module 13 · Media Dynamic rendering
Module 14 · Media Components' Props
Module 15 · Media Props.children
Module 16 · Media Prop Types
Module 17 · Media Using Prop Types You are here
Module 18 · Media React events
Module 19 · Media The bind method
Module 20 · Media Refs
Module 21 · Media Manage state in React
Module 22 · Media Decompose
Module 23 · Flowchart React siblings components
Module 24 · Media Parent component's structure
Module 25 · Media Change state functionality
Module 26 · Media Changing parent's state through Form
Module 27 · Media Depict parent's state
Module 28 · Media Create a react todo app

Close the course

Module 17 of 28 · Media

Using Prop Types

Kostas Diakogiannis

Using Prop Types within a component

Then in order to use it, you select the component and you set it's props to the type you want them to have. The types can be string, bool, object, number etc. Additionally you can specify if a property will be mandatory on instantiation of the component or not (required or optional) as it is shown above.

By taking a look at our example above with the heading, the prop paragraphText not only must be there, anytime we create a MyHeading instance, but also must be of a type string.

The propTypes object, when attached to a component, contains the component's props as keys, and a number of pre-defined requirements as values.

Using Prop Types

16.a React.js

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