b3213fc892
* fix: Chinese test suite Add localeTiltes, descriptions, and adjust test text and testStrings to get the automated test suite working. * fix: ran script, updated testStrings and solutions
89 lines
2.3 KiB
Markdown
89 lines
2.3 KiB
Markdown
---
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id: 56533eb9ac21ba0edf2244dd
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title: Selecting from Many Options with Switch Statements
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challengeType: 1
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videoUrl: ''
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localeTitle: 从带有开关语句的多个选项中进行选择
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---
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## Description
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<section id="description">
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如果您有很多选择，请使用<dfn> switch </dfn>语句。 <code> switch </code>语句测试一个值，并且可以包含许多定义各种可能值的<dfn> case </dfn>语句。 从第一个匹配的<code> case </code>值开始执行语句，直到遇到<code> break </code>。
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这是<code> switch </code>语句的示例：
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```js
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switch(lowercaseLetter) {
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case "a":
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console.log("A");
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break;
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case "b":
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console.log("B");
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break;
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}
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```
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<code> case </code>值以严格相等性（<code> === </code>）进行测试。 <code> break </code>告诉JavaScript停止执行语句。 如果省略<code> break </code>，将执行下一条语句。
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</section>
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## Instructions
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<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>
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## Tests
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<section id='tests'>
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```yml
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tests:
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- text: <code>caseInSwitch(1)</code>的值应为“alpha”
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testString: assert(caseInSwitch(1) === "alpha");
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- text: <code>caseInSwitch(2)</code>的值应为“beta”
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testString: assert(caseInSwitch(2) === "beta");
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- text: <code>caseInSwitch(3)</code>的值应为“gamma”
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testString: assert(caseInSwitch(3) === "gamma");
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- text: <code>caseInSwitch(4)</code>的值应为“delta”
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testString: assert(caseInSwitch(4) === "delta");
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- text: 您不应该使用任何<code>if</code>或<code>else</code>语句
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testString: assert(!/else/g.test(code) || !/if/g.test(code));
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- text: 你应该至少有3个<code>break</code>语句
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testString: assert(code.match(/break/g).length > 2);
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```
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</section>
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## Challenge Seed
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<section id='challengeSeed'>
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<div id='js-seed'>
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```js
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function caseInSwitch(val) {
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var answer = "";
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// Only change code below this line
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// Only change code above this line
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return answer;
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}
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// Change this value to test
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caseInSwitch(1);
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```
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</div>
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</section>
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## Solution
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<section id='solution'>
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```js
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// solution required
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```
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</section>
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