71 lines
		
	
	
		
			2.0 KiB
		
	
	
	
		
			Markdown
		
	
	
	
	
	
		
		
			
		
	
	
			71 lines
		
	
	
		
			2.0 KiB
		
	
	
	
		
			Markdown
		
	
	
	
	
	
|   | --- | |||
|  | id: 56533eb9ac21ba0edf2244dd | |||
|  | title: Selecting from Many Options with Switch Statements | |||
|  | challengeType: 1 | |||
|  | videoUrl: '' | |||
|  | localeTitle: 从带有开关语句的多个选项中进行选择 | |||
|  | --- | |||
|  | 
 | |||
|  | ## Description
 | |||
|  | undefined | |||
|  | 
 | |||
|  | ## Instructions
 | |||
|  | <section id="instructions">编写一个switch语句,测试<code>val</code>并设置以下条件的<code>answer</code> : <br> <code>1</code> - “alpha” <br> <code>2</code> - “beta” <br> <code>3</code> - “伽玛” <br> <code>4</code> - “三角洲” </section> | |||
|  | 
 | |||
|  | ## Tests
 | |||
|  | <section id='tests'> | |||
|  | 
 | |||
|  | ```yml | |||
|  | tests: | |||
|  |   - text: <code>caseInSwitch(1)</code>的值应为“alpha” | |||
|  |     testString: 'assert(caseInSwitch(1) === "alpha", "<code>caseInSwitch(1)</code> should have a value of "alpha"");' | |||
|  |   - text: <code>caseInSwitch(2)</code>的值应为“beta” | |||
|  |     testString: 'assert(caseInSwitch(2) === "beta", "<code>caseInSwitch(2)</code> should have a value of "beta"");' | |||
|  |   - text: <code>caseInSwitch(3)</code>的值应为“gamma” | |||
|  |     testString: 'assert(caseInSwitch(3) === "gamma", "<code>caseInSwitch(3)</code> should have a value of "gamma"");' | |||
|  |   - text: <code>caseInSwitch(4)</code>的值应为“delta” | |||
|  |     testString: 'assert(caseInSwitch(4) === "delta", "<code>caseInSwitch(4)</code> should have a value of "delta"");' | |||
|  |   - text: 您不应该使用任何<code>if</code>或<code>else</code>语句 | |||
|  |     testString: 'assert(!/else/g.test(code) || !/if/g.test(code), "You should not use any <code>if</code> or <code>else</code> statements");' | |||
|  |   - text: 你应该至少有3个<code>break</code>语句 | |||
|  |     testString: 'assert(code.match(/break/g).length > 2, "You should have at least 3 <code>break</code> statements");' | |||
|  | 
 | |||
|  | ``` | |||
|  | 
 | |||
|  | </section> | |||
|  | 
 | |||
|  | ## Challenge Seed
 | |||
|  | <section id='challengeSeed'> | |||
|  | 
 | |||
|  | <div id='js-seed'> | |||
|  | 
 | |||
|  | ```js | |||
|  | function caseInSwitch(val) { | |||
|  |   var answer = ""; | |||
|  |   // Only change code below this line | |||
|  | 
 | |||
|  | 
 | |||
|  | 
 | |||
|  |   // Only change code above this line | |||
|  |   return answer; | |||
|  | } | |||
|  | 
 | |||
|  | // Change this value to test | |||
|  | caseInSwitch(1); | |||
|  | 
 | |||
|  | ``` | |||
|  | 
 | |||
|  | </div> | |||
|  | 
 | |||
|  | 
 | |||
|  | 
 | |||
|  | </section> | |||
|  | 
 | |||
|  | ## Solution
 | |||
|  | <section id='solution'> | |||
|  | 
 | |||
|  | ```js | |||
|  | // solution required | |||
|  | ``` | |||
|  | </section> |