In addition to the standard validation, there is custom validation that you can set up for propTypes. Usually custom validation involves if else statements. Eve sets this up for the SkiDayList to return errors if the SkiDayList isn't an array or if it has no values. You can also use custom validation to match regular expressions.
Let's continue our discussion about validation…by setting up property types for other components.…Then we're going to get into some custom validation.…The first step I want to take here is I'm going…to remove our createClass and ES6 files.…We no longer need those anymore,…so we can clean up that folder a little bit.…The next thing I want to do here is…in our SkiDayCount propTypes,…I'm going to add one other one for goal,…just to keep all of our bases covered there.…
In our Index.js file,…I'm going to uncomment our render method.…This should be uncommented.…We do want to render our SkiDayList from now on.…Let's go ahead and add PropTypes to our SkiDayRow.…The first step of this is to import PropTypes from react.…We're using resort, date, powder,…and backcountry again for this.…Let's go ahead and supply these.…SkiDayRow dot propTypes equals…resort: PropTypes dot string dot isRequired.…
- Refactoring elements with JSX
- Transpiling with Babel
- Creating components
- Adding component properties and methods
- Displaying child components
- Working with props and state
- Setting up routes
- Nesting routes
- Creating forms
- Understanding the component life cycle
Skill Level Intermediate
Q: This course was updated on 09/19/2017. What changed?
A: The following topics were updated: setting up Chrome tools for React, inspecting React sites, Babel static transpiling with babel-cli, loading JSON with webpack, adding CSS to webpack build, and creating components with createClass(). In addition, a new video was added that covers migrating to webpack 3.
Q: This course was updated on 06/20/2018. What changed?
A: New videos were added that cover staying up to date with React and using create-react-app. In addition, the following topics were updated: creating components with createClass() and working with state.
Building a Polling App with Socket IO and React.jswith Alex Banks3h 56m Intermediate
1. What Is React.js?
2. Intro to JSX and Babel
3. React Components
4. Props and State
5. Using the React Router
6. Forms and Refs
7. The Component Lifecycle
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