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								---
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								id: 56bbb991ad1ed5201cd392cb
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								title: Manipulate Arrays With push()
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								challengeType: 1
							 
						 
					
						
							
								
									
										
										
										
											2018-10-10 16:20:40 -04:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
							
								videoUrl: ''
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								localeTitle: Manipular matrices con empuje ()
							 
						 
					
						
							
								
									
										
										
										
											2018-10-08 13:34:43 -04:00 
										
									 
								 
							 
							
								
							 
							
								 
							
							
								---
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								## Description
  
						 
					
						
							
								
									
										
										
										
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								< section  id = "description" >  Una forma fácil de agregar datos al final de una matriz es a través de la función < code > push()< / code >  . < code > .push()< / code >  toma uno o más < dfn > parámetros< / dfn >  y los " empuja"  al final de la matriz. < blockquote >  var arr = [1,2,3]; < br >  arr.push (4); < br >  // arr es ahora [1,2,3,4] < / blockquote > < / section >  
						 
					
						
							
								
									
										
										
										
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								## Instructions
  
						 
					
						
							
								
									
										
										
										
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								< section  id = "instructions" >  Presione < code > [" dog" , 3]< / code >  sobre el final de la variable < code > myArray< / code >  . < / section >  
						 
					
						
							
								
									
										
										
										
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								## Tests
  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< section  id = 'tests' >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								```yml
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								tests:
							 
						 
					
						
							
								
									
										
										
										
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								  -  text: '< code > myArray</ code >  ahora debe ser igual a < code > [[" John" , 23], [" cat" , 2], [" dog" , 3]]</ code >  .'
							 
						 
					
						
							
								
									
										
										
										
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								    testString: 'assert((function(d){if(d[2] != undefined & &  d[0][0] == "John" & &  d[0][1] === 23 & &  d[2][0] == "dog" & &  d[2][1] === 3 & &  d[2].length == 2){return true;}else{return false;}})(myArray), "< code > myArray< / code >  should now equal < code > [["John", 23], ["cat", 2], ["dog", 3]]< / code > .");'
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								```
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< / section >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								## Challenge Seed
  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< section  id = 'challengeSeed' >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< div  id = 'js-seed' >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								```js
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								// Example
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								var ourArray = ["Stimpson", "J", "cat"];
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								ourArray.push(["happy", "joy"]);
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								// ourArray now equals ["Stimpson", "J", "cat", ["happy", "joy"]]
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								// Setup
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								var myArray = [["John", 23], ["cat", 2]];
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								// Only change code below this line.
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								```
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< / div >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								### After Test
  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< div  id = 'js-teardown' >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								```js
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								console.info('after the test');
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								```
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< / div >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< / section >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								## Solution
  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< section  id = 'solution' >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								```js
							 
						 
					
						
							
								
									
										
										
										
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								// solution required
							 
						 
					
						
							
								
									
										
										
										
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								```
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< / section >