* chore: rename APIs and Microservices to include "Backend" (#42515) * fix typo * fix typo * undo change * Corrected grammar mistake Corrected a grammar mistake by removing a comma. * change APIs and Microservices cert title * update title * Change APIs and Microservices certi title * Update translations.json * update title * feat(curriculum): rename apis and microservices cert * rename folder structure * rename certificate * rename learn Markdown * apis-and-microservices -> back-end-development-and-apis * update backend meta * update i18n langs and cypress test Co-authored-by: Shaun Hamilton <shauhami020@gmail.com> * fix: add development to front-end libraries (#42512) * fix: added-the-word-Development-to-front-end-libraries * fix/added-the-word-Development-to-front-end-libraries * fix/added-word-development-to-front-end-libraries-in-other-related-files * fix/added-the-word-Development-to-front-end-and-all-related-files * fix/removed-typos-from-last-commit-in-index.md * fix/reverted-changes-that-i-made-to-dependecies * fix/removed xvfg * fix/reverted changes that i made to package.json * remove unwanted changes * front-end-development-libraries changes * rename backend certSlug and README * update i18n folder names and keys * test: add legacy path redirect tests This uses serve.json from the client-config repo, since we currently use that in production * fix: create public dir before moving serve.json * fix: add missing script * refactor: collect redirect tests * test: convert to cy.location for stricter tests * rename certificate folder to 00-certificates * change crowdin config to recognise new certificates location * allow translations to be used Co-authored-by: Nicholas Carrigan (he/him) <nhcarrigan@gmail.com> * add forwards slashes to path redirects * fix cypress path tests again * plese cypress * fix: test different challenge Okay so I literally have no idea why this one particular challenge fails in Cypress Firefox ONLY. Tom and I paired and spun a full build instance and confirmed in Firefox the page loads and redirects as expected. Changing to another bootstrap challenge passes Cypress firefox locally. Absolutely boggled by this. AAAAAAAAAAAAAAA * fix: separate the test Okay apparently the test does not work unless we separate it into a different `it` statement. >:( >:( >:( >:( Co-authored-by: Sujal Gupta <55016909+heysujal@users.noreply.github.com> Co-authored-by: Noor Fakhry <65724923+NoorFakhry@users.noreply.github.com> Co-authored-by: Oliver Eyton-Williams <ojeytonwilliams@gmail.com> Co-authored-by: Nicholas Carrigan (he/him) <nhcarrigan@gmail.com>
5.5 KiB
id, title, challengeType, forumTopicId, dashedName
id | title | challengeType | forumTopicId | dashedName |
---|---|---|---|---|
5a24c314108439a4d403617b | 傳遞迴調作爲 Props | 6 | 301400 | pass-a-callback-as-props |
--description--
可以將 state
作爲 props 傳遞給子組件,但不僅限於傳遞數據。 也可以將函數或在 React 組件中定義的任何方法傳遞給子組件。 這就是子組件與父組件交互的方式。 可以把方法像普通 prop 一樣傳遞給子組件, 它會被分配一個名字,可以在子組件中的 this.props
下訪問該方法的名字。
--instructions--
代碼編輯器中列出了三個組件。 MyApp
是父組件,GetInput
和RenderInput
是它將要渲染的子組件。 將 GetInput
組件添加到 MyApp
的 render 方法,然後將 MyApp
的 state
中的 inputValue
傳入名爲 input
的 prop。 還要創建一個名爲 handleChange
的 prop,並將輸入處理程序 handleChange
傳遞給它。
接下來,將 RenderInput
添加到 MyApp
中的 render 方法中,然後創建一個名爲 input
的 prop,並將 state
中的 inputValue
傳遞給它。 完成後,可以在 GetInput
組件中的 input
字段中鍵入內容,然後該組件通過 props 調用其父組件中的處理函數方法。 這將更新處於父組件 state
中的 input,該 input 將作爲 props 傳遞給兩個子組件。 觀察數據如何在組件之間流動,以及單一數據源如何保持父組件state
。 誠然,這個示例有點做作,但是應該能用來說明數據和回調是如何在 React 組件之間傳遞的。
--hints--
應該渲染 MyApp
組件。
assert(
(function () {
const mockedComponent = Enzyme.mount(React.createElement(MyApp));
return mockedComponent.find('MyApp').length === 1;
})()
);
應該渲染 GetInput
組件。
assert(
(function () {
const mockedComponent = Enzyme.mount(React.createElement(MyApp));
return mockedComponent.find('GetInput').length === 1;
})()
);
應該渲染 RenderInput
組件。
assert(
(function () {
const mockedComponent = Enzyme.mount(React.createElement(MyApp));
return mockedComponent.find('RenderInput').length === 1;
})()
);
GetInput
組件應該接收 MyApp
的 state 屬性 inputValue
作爲 props,幷包含一個修改 MyApp
state 的 input
元素。
async () => {
const waitForIt = (fn) =>
new Promise((resolve, reject) => setTimeout(() => resolve(fn()), 250));
const mockedComponent = Enzyme.mount(React.createElement(MyApp));
const state_1 = () => {
mockedComponent.setState({ inputValue: '' });
return waitForIt(() => mockedComponent.state());
};
const state_2 = () => {
mockedComponent
.find('input')
.simulate('change', { target: { value: 'TestInput' } });
return waitForIt(() => mockedComponent.state());
};
const updated_1 = await state_1();
const updated_2 = await state_2();
assert(updated_1.inputValue === '' && updated_2.inputValue === 'TestInput');
};
RenderInput
組件應該接收 MyApp
state 屬性 inputValue
作爲 props。
async () => {
const waitForIt = (fn) =>
new Promise((resolve, reject) => setTimeout(() => resolve(fn()), 250));
const mockedComponent = Enzyme.mount(React.createElement(MyApp));
const state_1 = () => {
mockedComponent.setState({ inputValue: 'TestName' });
return waitForIt(() => mockedComponent);
};
const updated_1 = await state_1();
assert(updated_1.find('p').text().includes('TestName'));
};
--seed--
--after-user-code--
ReactDOM.render(<MyApp />, document.getElementById('root'))
--seed-contents--
class MyApp extends React.Component {
constructor(props) {
super(props);
this.state = {
inputValue: ''
}
this.handleChange = this.handleChange.bind(this);
}
handleChange(event) {
this.setState({
inputValue: event.target.value
});
}
render() {
return (
<div>
{ /* Change code below this line */ }
{ /* Change code above this line */ }
</div>
);
}
};
class GetInput extends React.Component {
constructor(props) {
super(props);
}
render() {
return (
<div>
<h3>Get Input:</h3>
<input
value={this.props.input}
onChange={this.props.handleChange}/>
</div>
);
}
};
class RenderInput extends React.Component {
constructor(props) {
super(props);
}
render() {
return (
<div>
<h3>Input Render:</h3>
<p>{this.props.input}</p>
</div>
);
}
};
--solutions--
class MyApp extends React.Component {
constructor(props) {
super(props);
this.state = {
inputValue: ''
}
this.handleChange = this.handleChange.bind(this);
}
handleChange(event) {
this.setState({
inputValue: event.target.value
});
}
render() {
return (
<div>
<GetInput
input={this.state.inputValue}
handleChange={this.handleChange}/>
<RenderInput
input={this.state.inputValue}/>
</div>
);
}
};
class GetInput extends React.Component {
constructor(props) {
super(props);
}
render() {
return (
<div>
<h3>Get Input:</h3>
<input
value={this.props.input}
onChange={this.props.handleChange}/>
</div>
);
}
};
class RenderInput extends React.Component {
constructor(props) {
super(props);
}
render() {
return (
<div>
<h3>Input Render:</h3>
<p>{this.props.input}</p>
</div>
);
}
};