70 lines
1.9 KiB
Markdown
70 lines
1.9 KiB
Markdown
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---
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id: 587d7b89367417b2b2512b4a
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title: Use Destructuring Assignment to Assign Variables from Nested Objects
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localeTitle: Utilice la asignación de destrucción para asignar variables de objetos anidados
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challengeType: 1
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---
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## Description
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<section id='description'>
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Podemos igualmente destruir objetos <em>anidados</em> en variables.
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Considera el siguiente código:
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<blockquote>const a = {<br> start: { x: 5, y: 6},<br> end: { x: 6, y: -9 }<br>};<br>const { start : { x: startX, y: startY }} = a;<br>console.log(startX, startY); // 5, 6</blockquote>
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En el ejemplo anterior, a la variable <code>start</code> se le asigna el valor de <code>a.start</code> , que también es un objeto.
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</section>
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## Instructions
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<section id='instructions'>
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Utilice la asignación de desestructuración para obtener el <code>max</code> de <code>forecast.tomorrow</code> y asignarlo a <code>maxOfTomorrow</code> .
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</section>
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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: <code>maxOfTomorrow</code> es igual a <code>84.6</code>
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testString: 'assert(getMaxOfTmrw(LOCAL_FORECAST) === 84.6, "<code>maxOfTomorrow</code> equals <code>84.6</code>");'
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- text: se utilizó desestructuración anidada
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testString: 'getUserInput => assert(getUserInput("index").match(/\{\s*tomorrow\s*:\s*\{\s*max\s*:\s*maxOfTomorrow\s*\}\s*\}\s*=\s*forecast/g),"nested destructuring was used");'
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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='js-seed'>
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```js
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const LOCAL_FORECAST = {
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today: { min: 72, max: 83 },
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tomorrow: { min: 73.3, max: 84.6 }
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};
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function getMaxOfTmrw(forecast) {
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"use strict";
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// change code below this line
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const maxOfTomorrow = undefined; // change this line
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// change code above this line
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return maxOfTomorrow;
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}
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console.log(getMaxOfTmrw(LOCAL_FORECAST)); // should be 84.6
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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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