You have learned how to pass a prop to a component:
You have also learned how to access and display a passed-in prop:
The most common use of props is to pass information to a component, from a different component. You haven’t done that yet, but it’s very similar to what you’ve seen already.
In this exercise, you will pass a prop from one component to another.
A curmudgeonly clarification about grammar:
You may have noticed some loose usage of the words prop and props. Unfortunately, this is pretty inevitable.
props is the name of the object that stores passed-in information. this.props refers to that storage object. At the same time, each piece of passed-in information is called a prop. This means that props could refer to two pieces of passed-in information, or it could refer to the object that stores those pieces of information :(
Instructions
Your mission is to pass a prop to a <Greeting /> component instance, from an <App /> component instance.
If <App /> is going to pass a prop to <Greeting />, then it follows that <App /> is going to render <Greeting />.
Since <Greeting /> is going to be rendered by another component, that means that <Greeting /> needs to use an export statement.
In Greeting.js, delete this statement from line 2:
At the bottom of Greeting.js, remove the entire call to ReactDOM.render().
On line 3, add the word export to the beginning of the line, before the word class:
<App /> can’t pass a prop to <Greeting /> until App.js imports the variable Greeting! Until then, the characters <Greeting /> in App.js might as well be nonsense.
Select App.js. Create a new line underneath the line import ReactDOM from 'react-dom';.
On your new line, import the Greeting component class from ./Greeting. Remember to wrap Greeting in curly braces!
In App.js, add a <Greeting /> instance to App‘s render method, immediately underneath the <h1></h1>.
Give <Greeting /> an attribute with a name of “name.” The attribute’s value can be whatever you’d like.
When you click Run, <App /> will render <Greeting />, and pass it a prop!