135 lines
5.3 KiB
Markdown
135 lines
5.3 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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isRequired: false
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---
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## Description
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<section id='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 <code>this</code> keyword. To access props within a class component, you preface the code that you use to access it with <code>this</code>. For example, if an ES6 class component has a prop called <code>data</code>, you write <code>{this.props.data}</code> in JSX.
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</section>
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## Instructions
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<section id='instructions'>
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Render an instance of the <code>ReturnTempPassword</code> component in the parent component <code>ResetPassword</code>. Here, give <code>ReturnTempPassword</code> a prop of <code>tempPassword</code> and assign it a value of a string that is at least 8 characters long. Within the child, <code>ReturnTempPassword</code>, access the <code>tempPassword</code> prop within the <code>strong</code> tags to make sure the user sees the temporary password.
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</section>
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## Tests
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<section id='tests'>
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```yml
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tests:
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- text: The <code>ResetPassword</code> component should return a single <code>div</code> element.
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testString: assert((function() { const mockedComponent = Enzyme.mount(React.createElement(ResetPassword)); return mockedComponent.children().type() === 'div'; })(), 'The <code>ResetPassword</code> component should return a single <code>div</code> element.');
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- text: The fourth child of <code>ResetPassword</code> should be the <code>ReturnTempPassword</code> component.
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testString: assert((function() { const mockedComponent = Enzyme.mount(React.createElement(ResetPassword)); return mockedComponent.children().childAt(3).name() === 'ReturnTempPassword'; })(), 'The fourth child of <code>ResetPassword</code> should be the <code>ReturnTempPassword</code> component.');
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- text: The <code>ReturnTempPassword</code> component should have a prop called <code>tempPassword</code>.
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testString: assert((function() { const mockedComponent = Enzyme.mount(React.createElement(ResetPassword)); return mockedComponent.find('ReturnTempPassword').props().tempPassword; })(), 'The <code>ReturnTempPassword</code> component should have a prop called <code>tempPassword</code>.');
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- text: The <code>tempPassword</code> prop of <code>ReturnTempPassword</code> should be equal to a string of at least <code>8</code> characters.
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testString: assert((function() { const mockedComponent = Enzyme.mount(React.createElement(ResetPassword)); const temp = mockedComponent.find('ReturnTempPassword').props().tempPassword; return typeof temp === 'string' && temp.length >= 8; })(), 'The <code>tempPassword</code> prop of <code>ReturnTempPassword</code> should be equal to a string of at least <code>8</code> characters.');
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- text: The <code>ReturnTempPassword</code> component should display the password you create as the <code>tempPassword</code> prop within <code>strong</code> tags.
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testString: assert((function() { const mockedComponent = Enzyme.mount(React.createElement(ResetPassword)); return mockedComponent.find('strong').text() === mockedComponent.find('ReturnTempPassword').props().tempPassword; })(), 'The <code>ReturnTempPassword</code> component should display the password you create as the <code>tempPassword</code> prop within <code>strong</code> tags.');
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```
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</section>
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## Challenge Seed
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<section id='challengeSeed'>
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<div id='jsx-seed'>
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```jsx
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class ReturnTempPassword 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>Your temporary password is: <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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class ResetPassword 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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<h2>Reset Password</h2>
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<h3>We've generated a new temporary password for you.</h3>
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<h3>Please reset this password from your account settings ASAP.</h3>
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{ /* change code below this line */ }
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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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</div>
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### After Test
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<div id='jsx-teardown'>
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```js
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ReactDOM.render(<ResetPassword />, document.getElementById('root'))
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```
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</div>
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</section>
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## Solution
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<section id='solution'>
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```js
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class ReturnTempPassword 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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<p>Your temporary password is: <strong>{this.props.tempPassword}</strong></p>
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</div>
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);
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}
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};
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class ResetPassword 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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<h2>Reset Password</h2>
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<h3>We've generated a new temporary password for you.</h3>
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<h3>Please reset this password from your account settings ASAP.</h3>
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{ /* change code below this line */ }
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<ReturnTempPassword tempPassword="serrPbqrPnzc" />
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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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</section>
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