66 lines
2.8 KiB
Markdown
66 lines
2.8 KiB
Markdown
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---
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id: 587d7db8367417b2b2512ba1
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title: Match All Non-Numbers
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challengeType: 1
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videoUrl: ''
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localeTitle: 匹配所有非数字
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---
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## Description
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<section id="description">最后一项挑战显示了如何使用带有小写<code>d</code>的快捷键<code>\d</code>来搜索数字。您也可以使用类似的使用大写<code>D</code>快捷方式搜索非数字。查找非数字字符的快捷方式是<code>\D</code>这等于字符类<code>[^0-9]</code> ，它查找不是0到9之间的数字的单个字符。 </section>
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## Instructions
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<section id="instructions">使用非数字<code>\D</code>的速记字符类来计算电影标题中有多少个非数字。 </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: 您的正则表达式应使用快捷方式字符来匹配非数字字符
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testString: 'assert(/\\D/.test(noNumRegex.source), "Your regex should use the shortcut character to match non-digit characters");'
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- text: 你的正则表达式应该使用全局标志。
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testString: 'assert(noNumRegex.global, "Your regex should use the global flag.");'
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- text: 你的正则表达式应该在<code>"9"</code>找不到非数字。
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testString: 'assert("9".match(noNumRegex) == null, "Your regex should find no non-digits in <code>"9"</code>.");'
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- text: 你的正则表达式应该在<code>"Catch 22"</code>找到6个非数字。
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testString: 'assert("Catch 22".match(noNumRegex).length == 6, "Your regex should find 6 non-digits in <code>"Catch 22"</code>.");'
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- text: 你的正则表达式应该在<code>"101 Dalmatians"</code>找到11个非数字。
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testString: 'assert("101 Dalmatians".match(noNumRegex).length == 11, "Your regex should find 11 non-digits in <code>"101 Dalmatians"</code>.");'
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- text: '你的正则表达式应该在<code>"One, Two, Three"</code>找到15个非数字。'
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testString: 'assert("One, Two, Three".match(noNumRegex).length == 15, "Your regex should find 15 non-digits in <code>"One, Two, Three"</code>.");'
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- text: 你的正则表达式应该在<code>"21 Jump Street"</code>找到12个非数字。
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testString: 'assert("21 Jump Street".match(noNumRegex).length == 12, "Your regex should find 12 non-digits in <code>"21 Jump Street"</code>.");'
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- text: '你的正则表达式应该在<code>"2001: A Space Odyssey"</code>找到17个非数字。'
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testString: 'assert("2001: A Space Odyssey".match(noNumRegex).length == 17, "Your regex should find 17 non-digits in <code>"2001: A Space Odyssey"</code>.");'
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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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let numString = "Your sandwich will be $5.00";
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let noNumRegex = /change/; // Change this line
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let result = numString.match(noNumRegex).length;
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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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