65 lines
		
	
	
		
			1.9 KiB
		
	
	
	
		
			Markdown
		
	
	
	
	
	
			
		
		
	
	
			65 lines
		
	
	
		
			1.9 KiB
		
	
	
	
		
			Markdown
		
	
	
	
	
	
| ---
 | |
| id: 587d7b89367417b2b2512b4a
 | |
| title: Use Destructuring Assignment to Assign Variables from Nested Objects
 | |
| challengeType: 1
 | |
| videoUrl: ''
 | |
| localeTitle: Utilice la asignación de destrucción para asignar variables de objetos anidados
 | |
| ---
 | |
| 
 | |
| ## Description
 | |
| <section id="description"> De manera similar podemos destruir objetos <em>anidados</em> en variables. Considere el siguiente código: <blockquote> const a = { <br> inicio: {x: 5, y: 6}, <br> final: {x: 6, y: -9} <br> }; <br> const {inicio: {x: inicioX, y: inicioY}} = a; <br> console.log (startX, startY); // 5, 6 </blockquote> 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. </section>
 | |
| 
 | |
| ## Instructions
 | |
| <section id="instructions"> Utilice la asignación de desestructuración para obtener el <code>max</code> de <code>forecast.tomorrow</code> y asignarlo a <code>maxOfTomorrow</code> . </section>
 | |
| 
 | |
| ## Tests
 | |
| <section id='tests'>
 | |
| 
 | |
| ```yml
 | |
| tests:
 | |
|   - text: <code>maxOfTomorrow</code> es igual a <code>84.6</code>
 | |
|     testString: 'assert(getMaxOfTmrw(LOCAL_FORECAST) === 84.6, "<code>maxOfTomorrow</code> equals <code>84.6</code>");'
 | |
|   - text: se utilizó desestructuración anidada
 | |
|     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");'
 | |
| 
 | |
| ```
 | |
| 
 | |
| </section>
 | |
| 
 | |
| ## Challenge Seed
 | |
| <section id='challengeSeed'>
 | |
| 
 | |
| <div id='js-seed'>
 | |
| 
 | |
| ```js
 | |
| const LOCAL_FORECAST = {
 | |
|   today: { min: 72, max: 83 },
 | |
|   tomorrow: { min: 73.3, max: 84.6 }
 | |
| };
 | |
| 
 | |
| function getMaxOfTmrw(forecast) {
 | |
|   "use strict";
 | |
|   // change code below this line
 | |
|   const maxOfTomorrow = undefined; // change this line
 | |
|   // change code above this line
 | |
|   return maxOfTomorrow;
 | |
| }
 | |
| 
 | |
| console.log(getMaxOfTmrw(LOCAL_FORECAST)); // should be 84.6
 | |
| 
 | |
| ```
 | |
| 
 | |
| </div>
 | |
| 
 | |
| 
 | |
| 
 | |
| </section>
 | |
| 
 | |
| ## Solution
 | |
| <section id='solution'>
 | |
| 
 | |
| ```js
 | |
| // solution required
 | |
| ```
 | |
| </section>
 |