* simplify access props using this.props challenge * trying to make the test pass * change description access props challenge * Update curriculum/challenges/english/03-front-end-development-libraries/react/access-props-using-this.props.md Co-authored-by: Krzysztof <60067306+gikf@users.noreply.github.com> * delete test * Update curriculum/challenges/english/03-front-end-development-libraries/react/access-props-using-this.props.md Co-authored-by: Krzysztof <60067306+gikf@users.noreply.github.com>
		
			
				
	
	
		
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			149 lines
		
	
	
		
			3.3 KiB
		
	
	
	
		
			Markdown
		
	
	
	
	
	
| ---
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| id: 5a24c314108439a4d403616e
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| title: Access Props Using this.props
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| challengeType: 6
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| forumTopicId: 301375
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| dashedName: access-props-using-this-props
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| ---
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| 
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| # --description--
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| 
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| The last several challenges covered the basic ways to pass props to child components. But what if the child component that you're passing a prop to is an ES6 class component, rather than a stateless functional component? The ES6 class component uses a slightly different convention to access props.
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| 
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| Anytime you refer to a class component within itself, you use the `this` keyword. To access props within a class component, you preface the code that you use to access it with `this`. For example, if an ES6 class component has a prop called `data`, you write `{this.props.data}` in JSX.
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| 
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| # --instructions--
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| 
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| Render an instance of the `Welcome` component in the parent component `App`. Here, give `Welcome` a prop of `name` and assign it a value of a string. Within the child, `Welcome`, access the `name` prop within the `strong` tags.
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| 
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| # --hints--
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| 
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| The `App` component should return a single `div` element.
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| 
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| ```js
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| assert(
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|   (function () {
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|     const mockedComponent = Enzyme.mount(React.createElement(App));
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|     return mockedComponent.children().type() === 'div';
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|   })()
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| );
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| ```
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| 
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| The child of `App` should be the `Welcome` component.
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| 
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| ```js
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| assert(
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|   (function () {
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|     const mockedComponent = Enzyme.mount(React.createElement(App));
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|     return (
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|       mockedComponent.children().childAt(0).name() === 'Welcome'
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|     );
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|   })()
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| );
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| ```
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| 
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| The `Welcome` component should have a prop called `name`.
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| 
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| ```js
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| assert(
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|   (function () {
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|     const mockedComponent = Enzyme.mount(React.createElement(App));
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|     return mockedComponent.find('Welcome').props().name;
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|   })()
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| );
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| ```
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| 
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| The `Welcome` component should display the string you pass as the `name` prop within `strong` tags.
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| 
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| ```js
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| assert(
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|   (function () {
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|     const mockedComponent = Enzyme.mount(React.createElement(App));
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|     return (
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|       mockedComponent.find('strong').text() ===
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|       mockedComponent.find('Welcome').props().name
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|     );
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|   })()
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| );
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| ```
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| 
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| # --seed--
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| 
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| ## --after-user-code--
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| 
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| ```jsx
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| ReactDOM.render(<App />, document.getElementById('root'))
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| ```
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| 
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| ## --seed-contents--
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| 
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| ```jsx
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| class App extends React.Component {
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|   constructor(props) {
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|     super(props);
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| 
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|   }
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|   render() {
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|     return (
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|         <div>
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|             { /* Change code below this line */ }
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|             <Welcome />
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|             { /* Change code above this line */ }
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|         </div>
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|     );
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|   }
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| };
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| 
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| class Welcome extends React.Component {
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|   constructor(props) {
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|     super(props);
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| 
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|   }
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|   render() {
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|     return (
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|         <div>
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|           { /* Change code below this line */ }
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|           <p>Hello, <strong></strong>!</p>
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|           { /* Change code above this line */ }
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|         </div>
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|     );
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|   }
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| };
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| ```
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| 
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| # --solutions--
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| 
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| ```jsx
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| class Welcome extends React.Component {
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|   constructor(props) {
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|     super(props);
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| 
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|   }
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|   render() {
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|     return (
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|         <div>
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|           { /* Change code below this line */ }
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|           <p>Hello, <strong>{this.props.name}</strong>!</p>
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|           { /* Change code above this line */ }
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|         </div>
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|     );
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|   }
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| };
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| 
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| class App extends React.Component {
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|   constructor(props) {
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|     super(props);
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| 
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|   }
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|   render() {
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|     return (
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|         <div>
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|             { /* Change code below this line */ }
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|             <Welcome name="Quincy"/>
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|             { /* Change code above this line */ }
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|         </div>
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|     );
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|   }
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| };
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| ```
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