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								id: bd7123c9c452eddfaeb5bdef
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								title: Use Bracket Notation to Find the Nth-to-Last Character in a String
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								challengeType: 1
							 
						 
					
						
							
								
									
										
										
										
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								videoUrl: 'https://scrimba.com/c/cw4vkh9'
							 
						 
					
						
							
								
									
										
										
										
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								forumTopicId: 18344
							 
						 
					
						
							
								
									
										
										
										
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								---
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								## Description
 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< section  id = 'description' > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								You can use the same principle we just used to retrieve the last character in a string to retrieve the Nth-to-last character.
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								For example, you can get the value of the third-to-last letter of the < code > var firstName = "Charles"< / code >  string by using < code > firstName[firstName.length - 3]< / code > 
							 
						 
					
						
							
								
									
										
										
										
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								Example:
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								```js
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								var firstName = "Charles";
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								var thirdToLastLetter = firstName[firstName.length - 3]; // thirdToLastLetter is "l"
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								```
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
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								< / section > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								## Instructions
 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< section  id = 'instructions' > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								Use < dfn > bracket notation< / dfn >  to find the second-to-last character in the < code > lastName< / code >  string.
							 
						 
					
						
							
								
									
										
										
										
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								< strong > Hint: < / strong >  Try looking at the example above if you get stuck.
							 
						 
					
						
							
								
									
										
										
										
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								< / section > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								## Tests
 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< section  id = 'tests' > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								```yml
							 
						 
					
						
							
								
									
										
										
										
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								tests:
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								  -  text: < code > secondToLastLetterOfLastName</ code >  should be "c".
							 
						 
					
						
							
								
									
										
										
										
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								    testString: assert(secondToLastLetterOfLastName === 'c');
							 
						 
					
						
							
								
									
										
										
										
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								  -  text: You should use < code > .length</ code >  to get the second last letter.
							 
						 
					
						
							
								
									
										
										
										
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								    testString: assert(code.match(/\.length/g).length > 0);
							 
						 
					
						
							
								
									
										
										
										
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								```
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / section > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								## Challenge Seed
 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< section  id = 'challengeSeed' > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< div  id = 'js-seed' > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								```js
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								// Setup
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								var lastName = "Lovelace";
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								// Only change code below this line
							 
						 
					
						
							
								
									
										
										
										
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								var secondToLastLetterOfLastName = lastName; // Change this line
							 
						 
					
						
							
								
									
										
										
										
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								```
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / div > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								### After Test
 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< div  id = 'js-teardown' > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								```js
							 
						 
					
						
							
								
									
										
										
										
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								(function(v){return v;})(secondToLastLetterOfLastName);
							 
						 
					
						
							
								
									
										
										
										
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								```
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / div > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / section > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								## Solution
 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< section  id = 'solution' > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								```js
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								var lastName = "Lovelace";
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								var secondToLastLetterOfLastName = lastName[lastName.length - 2];
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								```
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / section >