5075f14248
* chore(i8n,learn): processed translations * Update curriculum/challenges/chinese/01-responsive-web-design/applied-visual-design/use-the-u-tag-to-underline-text.md Co-authored-by: Randell Dawson <5313213+RandellDawson@users.noreply.github.com> Co-authored-by: Crowdin Bot <support+bot@crowdin.com> Co-authored-by: Nicholas Carrigan (he/him) <nhcarrigan@gmail.com> Co-authored-by: Randell Dawson <5313213+RandellDawson@users.noreply.github.com>
101 lines
2.1 KiB
Markdown
101 lines
2.1 KiB
Markdown
---
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id: 5cdafbe72913098997531682
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title: Maneja una promesa rechazada usando catch
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challengeType: 1
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forumTopicId: 301204
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dashedName: handle-a-rejected-promise-with-catch
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---
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# --description--
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`catch` es el método utilizado cuando tu promesa ha sido rechazada. Se ejecuta inmediatamente, después de que se llama al método `reject` de una promesa. A continuación la sintaxis:
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```js
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myPromise.catch(error => {
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});
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```
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`error` es el argumento pasado al método `reject`.
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# --instructions--
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Añade el método `catch` a tu promesa. Usa `error` como el parámetro de tu función callback e imprime `error` en la consola.
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# --hints--
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Debes llamar al método `catch` en la promesa.
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```js
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assert(
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__helpers.removeWhiteSpace(code).match(/(makeServerRequest|\))\.catch\(/g)
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);
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```
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El método `catch`, debe tener una función callback con `error` como parámetro.
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```js
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assert(errorIsParameter);
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```
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Debes imprimir `error` en la consola.
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```js
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assert(
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errorIsParameter &&
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__helpers
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.removeWhiteSpace(code)
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.match(/\.catch\(.*?error.*?console.log\(error\).*?\)/)
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);
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```
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# --seed--
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## --after-user-code--
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```js
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const errorIsParameter = /\.catch\((function\(error\){|error|\(error\)=>)/.test(__helpers.removeWhiteSpace(code));
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```
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## --seed-contents--
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```js
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const makeServerRequest = new Promise((resolve, reject) => {
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// responseFromServer is set to false to represent an unsuccessful response from a server
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let responseFromServer = false;
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if(responseFromServer) {
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resolve("We got the data");
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} else {
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reject("Data not received");
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}
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});
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makeServerRequest.then(result => {
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console.log(result);
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});
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```
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# --solutions--
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```js
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const makeServerRequest = new Promise((resolve, reject) => {
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// responseFromServer is set to false to represent an unsuccessful response from a server
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let responseFromServer = false;
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if(responseFromServer) {
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resolve("We got the data");
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} else {
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reject("Data not received");
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}
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});
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makeServerRequest.then(result => {
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console.log(result);
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});
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makeServerRequest.catch(error => {
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console.log(error);
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});
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```
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