Stateless Components From Stateful Components

Lesson 1 of 3

1
Let’s learn our first programming pattern! In this lesson, we’ll take a look at a simple version of a programming pattern. The following lessons will expand upon that lesson, and by the end, we…
2
Let’s make a stateful component pass its state to a stateless component. To make that happen, you need two component classes: a stateful class, and a stateless class.
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Great! You just made a stateful component class named Parent. Now, let’s make our stateless component class.
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A is supposed to pass its state to a . Before a can pass anything to a , you need to import Child into Parent.js.
5
Great work! You just passed information from a stateful component to a stateless component. You will be doing a lot of that. You learned earlier that a component can change its state by c…

1
In the last lesson, you passed information from a stateful, parent component to a stateless, child component. In this lesson, you’ll be expanding on that pattern. The stateless, child component w…
2
To make a child component update its parent’s state, the first step is something that you’ve seen before: you must define a state-changing method on the parent.
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In the last exercise, you defined a function in Parent that can change Parent’s state. Parent must pass this function down to Child, so that Child can use it in an event listener on the dropdown m…
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You just passed a function down to Child that can change Parent’s state!
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Great work! Stateless components updating their parents’ state is a React pattern that you’ll see more and more. Learning to recognize it will help you understand how React apps are organized. …

1
Patterns within patterns within patterns! In lesson 1, you learned your first React programming pattern: a stateful, parent component passes down a prop to a stateless, child component. In l…
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One of the very first things that you learned about components is that they should only have one job. In the last lesson, Child had two jobs: 1 - Child displayed a name. 2 - Child offered a way …
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Look at Parent.js in the code editor. Three things have changed in this file since the last Lesson: 1. Sibling has been required on line 4. 2. A instance has been added to the render fu…
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You’re on the last step! You’ve passed the name down to as a prop. Now has to display that prop.
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You just executed your first complete React programming pattern! Let’s review. Follow each step in the code editor: - A stateful component class defines a function that calls this.setState. …

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