Files
freeCodeCamp/curriculum/challenges/espanol/03-front-end-development-libraries/react/render-state-in-the-user-interface-another-way.md
Shaun Hamilton c2a11ad00d feat: add 'back/front end' in curriculum (#42596)
* 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>
2021-08-13 21:57:13 -05:00

120 lines
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Markdown

---
id: 5a24c314108439a4d4036172
title: Otra manera de renderizar el estado en la interfaz de usuario
challengeType: 6
forumTopicId: 301408
dashedName: render-state-in-the-user-interface-another-way
---
# --description--
Hay otra manera de acceder al `state` de un componente. En el método `render()`, antes de la sentencia `return`, se puede escribir JavaScript directamente. Por ejemplo, puedes declarar funciones, acceder a datos de `state` o `props`, realizar cálculos sobre estos datos, etc. Luego, puedes asignar cualquier dato a las variables, a las que tienes acceso en la sentencia `return`.
# --instructions--
En el método de renderización de `MyComponent`, define una `const` llamada `name` y ponlo igual al valor del nombre en el `state` del componente. Debido a que puedes escribir JavaScript directamente en esta parte del código, no tienes que incluir esta referencia entre llaves.
A continuación, en la sentencia return, renderiza este valor en una etiqueta `h1` usando la variable `name`. Recuerda, necesitas usar la sintaxis JSX (llaves para JavaScript) en la sentencia return.
# --hints--
`MyComponent` debe tener una clave `name` con valor `freeCodeCamp` almacenado en su estado.
```js
assert(
Enzyme.mount(React.createElement(MyComponent)).state('name') ===
'freeCodeCamp'
);
```
`MyComponent` debe renderizar un encabezado `h1` incluido en un solo `div`.
```js
assert(
/<div><h1>.*<\/h1><\/div>/.test(
Enzyme.mount(React.createElement(MyComponent)).html()
)
);
```
La etiqueta `h1` renderizada debe incluir una referencia a `{name}`.
```js
(getUserInput) =>
assert(/<h1>\n*\s*\{\s*name\s*\}\s*\n*<\/h1>/.test(getUserInput('index')));
```
El encabezado `h1` renderizado debe contener texto renderizado desde el state del componente.
```js
async () => {
const waitForIt = (fn) =>
new Promise((resolve, reject) => setTimeout(() => resolve(fn()), 250));
const mockedComponent = Enzyme.mount(React.createElement(MyComponent));
const first = () => {
mockedComponent.setState({ name: 'TestName' });
return waitForIt(() => mockedComponent.html());
};
const firstValue = await first();
assert(firstValue === '<div><h1>TestName</h1></div>');
};
```
# --seed--
## --after-user-code--
```jsx
ReactDOM.render(<MyComponent />, document.getElementById('root'))
```
## --seed-contents--
```jsx
class MyComponent extends React.Component {
constructor(props) {
super(props);
this.state = {
name: 'freeCodeCamp'
}
}
render() {
// Change code below this line
// Change code above this line
return (
<div>
{ /* Change code below this line */ }
{ /* Change code above this line */ }
</div>
);
}
};
```
# --solutions--
```jsx
class MyComponent extends React.Component {
constructor(props) {
super(props);
this.state = {
name: 'freeCodeCamp'
}
}
render() {
// Change code below this line
const name = this.state.name;
// Change code above this line
return (
<div>
{ /* Change code below this line */ }
<h1>{name}</h1>
{ /* Change code above this line */ }
</div>
);
}
};
```