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								---
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								id: 587d7b85367417b2b2512b39
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								title: Catch Missing Open and Closing Parenthesis After a Function Call
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								challengeType: 1
							 
						 
					
						
							
								
									
										
										
										
											2019-08-05 09:17:33 -07:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
							
								forumTopicId: 301185
							 
						 
					
						
							
								
									
										
										
										
											2018-09-30 23:01:58 +01:00 
										
									 
								 
							 
							
								
							 
							
								 
							
							
								---
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								## Description
  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< section  id = 'description' >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								When a function or method doesn't take any arguments, you may forget to include the (empty) opening and closing parentheses when calling it. Often times the result of a function call is saved in a variable for other use in your code. This error can be detected by logging variable values (or their types) to the console and seeing that one is set to a function reference, instead of the expected value the function returns.
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								The variables in the following example are different:
							 
						 
					
						
							
								
									
										
										
										
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								```js
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								function myFunction() {
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								  return "You rock!";
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								}
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								let varOne = myFunction; // set to equal a function
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								let varTwo = myFunction(); // set to equal the string "You rock!"
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								```
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
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								< / section >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								## Instructions
  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< section  id = 'instructions' >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								Fix the code so the variable < code > result< / code >  is set to the value returned from calling the function < code > getNine< / code > .
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
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								## Tests
  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< section  id = 'tests' >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								```yml
							 
						 
					
						
							
								
									
										
										
										
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								tests:
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								  -  text: Your code should fix the variable < code > result</ code >  so it is set to the number that the function < code > getNine</ code >  returns.
							 
						 
					
						
							
								
									
										
										
										
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								    testString: assert(result == 9);
							 
						 
					
						
							
								
									
										
										
										
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								  -  text: Your code should call the < code > getNine</ code >  function.
							 
						 
					
						
							
								
									
										
										
										
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								    testString: assert(code.match(/getNine\(\)/g).length == 2);
							 
						 
					
						
							
								
									
										
										
										
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								```
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
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								## Challenge Seed
  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< section  id = 'challengeSeed' >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< div  id = 'js-seed' >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								```js
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								function getNine() {
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								  let x = 6;
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								  let y = 3;
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								  return x + y;
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								}
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								let result = getNine;
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								console.log(result);
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								```
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< / div >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
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								## Solution
  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< section  id = 'solution' >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								```js
							 
						 
					
						
							
								
									
										
										
										
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								function getNine() {
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								 let x = 6;
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								 let y = 3;
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								 return x + y;
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								}
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								let result = getNine();
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								console.log(result);
							 
						 
					
						
							
								
									
										
										
										
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								```
							 
						 
					
						
							
								
									
										
										
										
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								< / section >