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								---
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								id: 587d7b7e367417b2b2512b24
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								title: Use the Conditional (Ternary) Operator
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								challengeType: 1
							 
						 
					
						
							
								
									
										
										
										
											2019-08-05 09:17:33 -07:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
							
								forumTopicId: 301181
							 
						 
					
						
							
								
									
										
										
										
											2021-01-13 03:31:00 +01:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
							
								dashedName: use-the-conditional-ternary-operator
							 
						 
					
						
							
								
									
										
										
										
											2018-09-30 23:01:58 +01:00 
										
									 
								 
							 
							
								
							 
							
								 
							
							
								---
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
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								# --description--
  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
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								The < dfn > conditional operator< / dfn > , also called the < dfn > ternary operator< / dfn > , can be used as a one line if-else expression.
							 
						 
					
						
							
								
									
										
										
										
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								The syntax is `a ? b : c` , where `a`  is the condition, `b`  is the code to run when the condition returns `true` , and `c`  is the code to run when the condition returns `false` .
							 
						 
					
						
							
								
									
										
										
										
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								The following function uses an `if/else`  statement to check a condition:
							 
						 
					
						
							
								
									
										
										
										
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								```js
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								function findGreater(a, b) {
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								  if(a > b) {
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								    return "a is greater";
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								  }
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								  else {
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								    return "b is greater";
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								  }
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								}
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								```
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
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								This can be re-written using the conditional operator:
							 
						 
					
						
							
								
									
										
										
										
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								```js
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								function findGreater(a, b) {
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								  return a > b ? "a is greater" : "b is greater";
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								}
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								```
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
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								# --instructions--
  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
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								Use the conditional operator in the `checkEqual`  function to check if two numbers are equal or not. The function should return either the string `Equal`  or the string `Not Equal` .
							 
						 
					
						
							
								
									
										
										
										
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								# --hints--
  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
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								`checkEqual`  should use the conditional operator 
						 
					
						
							
								
									
										
										
										
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								```js
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								assert(/.+?\s*?\?\s*?.+?\s*?:\s*?.+?/.test(code));
							 
						 
					
						
							
								
									
										
										
										
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								```
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
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								`checkEqual(1, 2)`  should return the string `Not Equal`  
						 
					
						
							
								
									
										
										
										
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								```js
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								assert(checkEqual(1, 2) === 'Not Equal');
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								```
							 
						 
					
						
							
								
									
										
										
										
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								`checkEqual(1, 1)`  should return the string `Equal`  
						 
					
						
							
								
									
										
										
										
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								```js
							 
						 
					
						
							
								
									
										
										
										
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								assert(checkEqual(1, 1) === 'Equal');
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								```
							 
						 
					
						
							
								
									
										
										
										
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								`checkEqual(1, -1)`  should return the string `Not Equal`  
						 
					
						
							
								
									
										
										
										
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								```js
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								assert(checkEqual(1, -1) === 'Not Equal');
							 
						 
					
						
							
								
									
										
										
										
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								```
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
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								# --seed--
  
						 
					
						
							
								
									
										
										
										
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								## --seed-contents--
  
						 
					
						
							
								
									
										
										
										
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								```js
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								function checkEqual(a, b) {
							 
						 
					
						
							
								
									
										
										
										
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								}
							 
						 
					
						
							
								
									
										
										
										
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								checkEqual(1, 2);
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								```
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								# --solutions--
  
						 
					
						
							
								
									
										
										
										
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								```js
							 
						 
					
						
							
								
									
										
										
										
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								function checkEqual(a, b) {
							 
						 
					
						
							
								
									
										
										
										
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								  return a === b ? "Equal" : "Not Equal";
							 
						 
					
						
							
								
									
										
										
										
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								}
							 
						 
					
						
							
								
									
										
										
										
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								```