* 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>
149 lines
3.3 KiB
Markdown
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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# --description--
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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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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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# --instructions--
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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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# --hints--
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The `App` component should return a single `div` element.
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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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The child of `App` should be the `Welcome` component.
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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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The `Welcome` component should have a prop called `name`.
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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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The `Welcome` component should display the string you pass as the `name` prop within `strong` tags.
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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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# --seed--
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## --after-user-code--
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```jsx
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ReactDOM.render(<App />, document.getElementById('root'))
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```
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## --seed-contents--
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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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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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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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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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# --solutions--
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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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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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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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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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