87 lines
3.0 KiB
Markdown
87 lines
3.0 KiB
Markdown
---
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id: 5a24c314108439a4d4036178
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title: Create a Controlled Input
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challengeType: 6
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isRequired: false
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videoUrl: ''
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localeTitle: ''
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---
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## Description
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undefined
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## Instructions
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undefined
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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: يجب أن يعرض <code>ControlledInput</code> عنصر <code>div</code> يحتوي على <code>input</code> وعلامة <code>p</code> .
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testString: 'assert(Enzyme.mount(React.createElement(ControlledInput)).find("div").children().find("input").length === 1 && Enzyme.mount(React.createElement(ControlledInput)).find("div").children().find("p").length === 1, "<code>ControlledInput</code> should return a <code>div</code> element which contains an <code>input</code> and a <code>p</code> tag.");'
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- text: يجب تهيئة حالة <code>ControlledInput</code> مع خاصية <code>input</code> لتعيين سلسلة فارغة.
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testString: 'assert.strictEqual(Enzyme.mount(React.createElement(ControlledInput)).state("input"), "", "The state of <code>ControlledInput</code> should initialize with an <code>input</code> property set to an empty string.");'
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- text: يجب أن تؤدي الكتابة في عنصر الإدخال إلى تحديث الحالة وقيمة الإدخال ، ويجب أن يعرض العنصر <code>p</code> هذه الحالة أثناء الكتابة.
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testString: 'async () => { const waitForIt = (fn) => new Promise((resolve, reject) => setTimeout(() => resolve(fn()), 250)); const mockedComponent = Enzyme.mount(React.createElement(ControlledInput)); const _1 = () => { mockedComponent.setState({ input: "" }); return waitForIt(() => mockedComponent.state("input"))}; const _2 = () => { mockedComponent.find("input").simulate("change", { target: { value: "TestInput" }}); return waitForIt(() => ({ state: mockedComponent.state("input"), text: mockedComponent.find("p").text(), inputVal: mockedComponent.find("input").props().value }))}; const before = await _1(); const after = await _2(); assert(before === "" && after.state === "TestInput" && after.text === "TestInput" && after.inputVal === "TestInput", "Typing in the input element should update the state and the value of the input, and the <code>p</code> element should render this state as you type."); }; '
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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 ControlledInput extends React.Component {
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constructor(props) {
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super(props);
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this.state = {
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input: "
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};
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// change code below this line
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// change code above this line
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}
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// change code below this line
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// change code above this line
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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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{ /* change code above this line */}
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<h4>Controlled Input:</h4>
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<p>{this.state.input}</p>
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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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console.info('after the test');
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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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// solution required
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```
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</section>
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