84 lines
3.5 KiB
Markdown
84 lines
3.5 KiB
Markdown
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---
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id: 56533eb9ac21ba0edf2244d9
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title: Comparisons with the Logical Or Operator
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challengeType: 1
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videoUrl: ''
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localeTitle: 与逻辑或运算符的比较
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---
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## Description
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<section id="description"> <dfn>逻辑OR</dfn>运算符（ <code>||</code> ）返回<code>true</code> ，如果任一<dfn>操作数</dfn>为<code>true</code> 。否则，它返回<code>false</code> 。 <dfn>逻辑或</dfn>运算符由两个管道符号（ <code>|</code> ）组成。这通常可以在Backspace和Enter键之间找到。以下模式应该从以前的方法点看起来很熟悉： <blockquote> if（num> 10）{ <br>返回“否”; <br> } <br> if（num <5）{ <br>返回“否”; <br> } <br>返回“是”; </blockquote>仅当<code>num</code>介于<code>5</code>和<code>10</code>之间（包括5和10）时，才会返回“Yes”。相同的逻辑可以写成： <blockquote> if（num> 10 || num <5）{ <br>返回“否”; <br> } <br>返回“是”; </blockquote></section>
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## Instructions
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<section id="instructions">将两个<code>if</code>语句组合成一个语句，如果<code>val</code>不在<code>10</code>和<code>20</code>之间（包括<code>10</code>和<code>20</code> ，则返回<code>"Outside"</code> 。否则，返回<code>"Inside"</code> 。 </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: 你应该使用<code>||</code>操作员一次
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testString: 'assert(code.match(/\|\|/g).length === 1, "You should use the <code>||</code> operator once");'
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- text: 你应该只有一个<code>if</code>语句
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testString: 'assert(code.match(/if/g).length === 1, "You should only have one <code>if</code> statement");'
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- text: <code>testLogicalOr(0)</code>应返回“Outside”
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testString: 'assert(testLogicalOr(0) === "Outside", "<code>testLogicalOr(0)</code> should return "Outside"");'
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- text: <code>testLogicalOr(9)</code>应返回“Outside”
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testString: 'assert(testLogicalOr(9) === "Outside", "<code>testLogicalOr(9)</code> should return "Outside"");'
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- text: <code>testLogicalOr(10)</code>应返回“Inside”
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testString: 'assert(testLogicalOr(10) === "Inside", "<code>testLogicalOr(10)</code> should return "Inside"");'
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- text: <code>testLogicalOr(15)</code>应返回“Inside”
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testString: 'assert(testLogicalOr(15) === "Inside", "<code>testLogicalOr(15)</code> should return "Inside"");'
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- text: <code>testLogicalOr(19)</code>应该返回“Inside”
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testString: 'assert(testLogicalOr(19) === "Inside", "<code>testLogicalOr(19)</code> should return "Inside"");'
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- text: <code>testLogicalOr(20)</code>应该返回“Inside”
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testString: 'assert(testLogicalOr(20) === "Inside", "<code>testLogicalOr(20)</code> should return "Inside"");'
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- text: <code>testLogicalOr(21)</code>应该返回“Outside”
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testString: 'assert(testLogicalOr(21) === "Outside", "<code>testLogicalOr(21)</code> should return "Outside"");'
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- text: <code>testLogicalOr(25)</code>应返回“Outside”
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testString: 'assert(testLogicalOr(25) === "Outside", "<code>testLogicalOr(25)</code> should return "Outside"");'
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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 testLogicalOr(val) {
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// Only change code below this line
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if (val) {
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return "Outside";
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}
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if (val) {
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return "Outside";
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}
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// Only change code above this line
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return "Inside";
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}
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// Change this value to test
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testLogicalOr(15);
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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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