2018-10-04 14:37:37 +01:00 
										
									 
								 
							 
							
								
							 
							
								 
							
							
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								id: 587d7db8367417b2b2512ba0
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								title: Match Everything But Letters and Numbers
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								challengeType: 1
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								---
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								## Description
  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< section  id = 'description' >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								You've learned that you can use a shortcut to match alphanumerics < code > [A-Za-z0-9_]</ code >  using < code > \w</ code > . A natural pattern you might want to search for is the opposite of alphanumerics.
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								You can search for the opposite of the < code > \w</ code >  with < code > \W</ code > . Note, the opposite pattern uses a capital letter. This shortcut is the same as < code > [^A-Za-z0-9_]</ code > .
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< blockquote > let shortHand = /\W/;< br > let numbers = "42%";< br > let sentence = "Coding!";< br > numbers.match(shortHand); // Returns ["%"]< br > sentence.match(shortHand); // Returns ["!"]< br ></ blockquote >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
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								## Instructions
  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< section  id = 'instructions' >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								Use the shorthand character class < code > \W</ code >  to count the number of non-alphanumeric characters in various quotes and strings.
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
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								## Tests
  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< section  id = 'tests' >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								```yml
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								tests:
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								  -  text: Your regex should use the global flag.
							 
						 
					
						
							
								
									
										
										
										
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								    testString: assert(nonAlphabetRegex.global, 'Your regex should use the global flag.');
							 
						 
					
						
							
								
									
										
										
										
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								  -  text: Your regex should find 6 non-alphanumeric characters in < code > "The five boxing wizards jump quickly."</ code > .
							 
						 
					
						
							
								
									
										
										
										
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								    testString: assert("The five boxing wizards jump quickly.".match(nonAlphabetRegex).length == 6, 'Your regex should find 6 non-alphanumeric characters in < code > "The five boxing wizards jump quickly."< / code > .');
							 
						 
					
						
							
								
									
										
										
										
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								  -  text: Your regex should use the shorthand character.
							 
						 
					
						
							
								
									
										
										
										
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								    testString: assert(/\\W/.test(nonAlphabetRegex.source), 'Your regex should use the shorthand character to match characters which are non-alphanumeric.');
							 
						 
					
						
							
								
									
										
										
										
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								  -  text: Your regex should find 8 non-alphanumeric characters in < code > "Pack my box with five dozen liquor jugs."</ code > 
							 
						 
					
						
							
								
									
										
										
										
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								    testString: assert("Pack my box with five dozen liquor jugs.".match(nonAlphabetRegex).length == 8, 'Your regex should find 8 non-alphanumeric characters in < code > "Pack my box with five dozen liquor jugs."< / code > ');
							 
						 
					
						
							
								
									
										
										
										
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								  -  text: Your regex should find 6 non-alphanumeric characters in < code > "How vexingly quick daft zebras jump!"</ code > 
							 
						 
					
						
							
								
									
										
										
										
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								    testString: assert("How vexingly quick daft zebras jump!".match(nonAlphabetRegex).length == 6, 'Your regex should find 6 non-alphanumeric characters in < code > "How vexingly quick daft zebras jump!"< / code > ');
							 
						 
					
						
							
								
									
										
										
										
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								  -  text: Your regex should find 12 non-alphanumeric characters in < code > "123 456 7890 ABC def GHI jkl MNO pqr STU vwx YZ."</ code > 
							 
						 
					
						
							
								
									
										
										
										
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								    testString: assert("123 456 7890 ABC def GHI jkl MNO pqr STU vwx YZ.".match(nonAlphabetRegex).length == 12, 'Your regex should find 12 non-alphanumeric characters in < code > "123 456 7890 ABC def GHI jkl MNO pqr STU vwx YZ."< / code > ');
							 
						 
					
						
							
								
									
										
										
										
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								```
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
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								## Challenge Seed
  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< section  id = 'challengeSeed' >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< div  id = 'js-seed' >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								```js
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								let quoteSample = "The five boxing wizards jump quickly.";
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								let nonAlphabetRegex = /change/; // Change this line
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								let result = quoteSample.match(nonAlphabetRegex).length;
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								```
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
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								## Solution
  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< section  id = 'solution' >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								```js
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								// solution required
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								```
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< / section >