99 lines
3.4 KiB
Markdown
99 lines
3.4 KiB
Markdown
---
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id: 56533eb9ac21ba0edf2244de
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title: Adding a Default Option in Switch Statements
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challengeType: 1
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videoUrl: 'https://scrimba.com/c/c3JvVfg'
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---
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## Description
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<section id='description'>
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In a <code>switch</code> statement you may not be able to specify all possible values as <code>case</code> statements. Instead, you can add the <code>default</code> statement which will be executed if no matching <code>case</code> statements are found. Think of it like the final <code>else</code> statement in an <code>if/else</code> chain.
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A <code>default</code> statement should be the last case.
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<blockquote>switch (num) {<br> case value1:<br> statement1;<br> break;<br> case value2:<br> statement2;<br> break;<br>...<br> default:<br> defaultStatement;<br> break;<br>}</blockquote>
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</section>
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## Instructions
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<section id='instructions'>
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Write a switch statement to set <code>answer</code> for the following conditions:<br><code>"a"</code> - "apple"<br><code>"b"</code> - "bird"<br><code>"c"</code> - "cat"<br><code>default</code> - "stuff"
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</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>switchOfStuff("a")</code> should have a value of "apple"
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testString: assert(switchOfStuff("a") === "apple", '<code>switchOfStuff("a")</code> should have a value of "apple"');
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- text: <code>switchOfStuff("b")</code> should have a value of "bird"
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testString: assert(switchOfStuff("b") === "bird", '<code>switchOfStuff("b")</code> should have a value of "bird"');
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- text: <code>switchOfStuff("c")</code> should have a value of "cat"
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testString: assert(switchOfStuff("c") === "cat", '<code>switchOfStuff("c")</code> should have a value of "cat"');
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- text: <code>switchOfStuff("d")</code> should have a value of "stuff"
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testString: assert(switchOfStuff("d") === "stuff", '<code>switchOfStuff("d")</code> should have a value of "stuff"');
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- text: <code>switchOfStuff(4)</code> should have a value of "stuff"
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testString: assert(switchOfStuff(4) === "stuff", '<code>switchOfStuff(4)</code> should have a value of "stuff"');
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- text: You should not use any <code>if</code> or <code>else</code> statements
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testString: assert(!/else/g.test(code) || !/if/g.test(code), 'You should not use any <code>if</code> or <code>else</code> statements');
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- text: You should use a <code>default</code> statement
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testString: assert(switchOfStuff("string-to-trigger-default-case") === "stuff", 'You should use a <code>default</code> statement');
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- text: You should have at least 3 <code>break</code> statements
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testString: assert(code.match(/break/g).length > 2, 'You should have at least 3 <code>break</code> statements');
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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 switchOfStuff(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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switchOfStuff(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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function switchOfStuff(val) {
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var answer = "";
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switch(val) {
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case "a":
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answer = "apple";
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break;
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case "b":
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answer = "bird";
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break;
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case "c":
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answer = "cat";
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break;
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default:
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answer = "stuff";
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}
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return answer;
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}
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```
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</section>
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