* 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>
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id, title, challengeType, forumTopicId, dashedName
id | title | challengeType | forumTopicId | dashedName |
---|---|---|---|---|
5a24c314108439a4d403616b | 使用默認的 Props | 6 | 301418 | use-default-props |
--description--
React 還有一個設置默認 props 的選項。 可以將默認 props 作爲組件本身的屬性分配給組件,React 會在必要時分配默認 prop。 如果沒有顯式的提供任何值,這允許指定 prop 值應該是什麼。 例如,如果聲明 MyComponent.defaultProps = { location: 'San Francisco' }
,即定義一個 location 屬性,並且其值在沒有另行制定的情況下被設置爲字符串 San Francisco
。 如果 props 未定義,則 React 會分配默認 props,但如果你將 null
作爲 prop 的值,它將保持 null
。
--instructions--
代碼編輯器中有一個 ShoppingCart
組件。 在這個組件上定義默認 props,它指定一個 items
prop,其值爲 0
。
--hints--
應該渲染 ShoppingCart
組件。
assert(
(function () {
const mockedComponent = Enzyme.mount(React.createElement(ShoppingCart));
return mockedComponent.find('ShoppingCart').length === 1;
})()
);
ShoppingCart
組件應該有一個 { items: 0 }
的默認 prop。
assert(
(function () {
const mockedComponent = Enzyme.mount(React.createElement(ShoppingCart));
mockedComponent.setProps({ items: undefined });
return mockedComponent.find('ShoppingCart').props().items === 0;
})()
);
--seed--
--after-user-code--
ReactDOM.render(<ShoppingCart />, document.getElementById('root'))
--seed-contents--
const ShoppingCart = (props) => {
return (
<div>
<h1>Shopping Cart Component</h1>
</div>
)
};
// Change code below this line
--solutions--
const ShoppingCart = (props) => {
return (
<div>
<h1>Shopping Cart Component</h1>
</div>
)
};
// Change code below this line
ShoppingCart.defaultProps = {
items: 0
}