ee1e8abd87
* feat(tools): add seed/solution restore script * chore(curriculum): remove empty sections' markers * chore(curriculum): add seed + solution to Chinese * chore: remove old formatter * fix: update getChallenges parse translated challenges separately, without reference to the source * chore(curriculum): add dashedName to English * chore(curriculum): add dashedName to Chinese * refactor: remove unused challenge property 'name' * fix: relax dashedName requirement * fix: stray tag Remove stray `pre` tag from challenge file. Signed-off-by: nhcarrigan <nhcarrigan@gmail.com> Co-authored-by: nhcarrigan <nhcarrigan@gmail.com>
71 lines
1.4 KiB
Markdown
71 lines
1.4 KiB
Markdown
---
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id: 56533eb9ac21ba0edf2244ae
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title: 求余运算
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challengeType: 1
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videoUrl: 'https://scrimba.com/c/cWP24Ub'
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forumTopicId: 18184
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dashedName: finding-a-remainder-in-javascript
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---
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# --description--
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<dfn>remainder</dfn>求余运算符`%`返回两个数相除得到的余数
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**示例**
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<blockquote>5 % 2 = 1 因为<br>Math.floor(5 / 2) = 2 （商）<br>2 * 2 = 4<br>5 - 4 = 1 （余数）</blockquote>
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**用法**
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在数学中，判断一个数是奇数还是偶数，只需要判断这个数除以 2 得到的余数是 0 还是 1。
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<blockquote>17 % 2 = 1（17 是奇数）<br>48 % 2 = 0（48 是偶数）</blockquote>
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**提示**
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余数运算符(<dfn>remainder</dfn>)有时被错误地称为“模数”运算符。它与模数非常相似，但不能用于负数的运算。\*\*\*\*
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# --instructions--
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使用`%`运算符，计算 11 除以 3 的余数，并把余数赋给变量 remainder。
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# --hints--
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变量`remainder`应该被初始化。
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```js
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assert(/var\s+?remainder/.test(code));
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```
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`remainder`的值应该等于`2`。
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```js
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assert(remainder === 2);
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```
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你应该使用`%`运算符。
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```js
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assert(/\s+?remainder\s*?=\s*?.*%.*;/.test(code));
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```
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# --seed--
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## --after-user-code--
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```js
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(function(y){return 'remainder = '+y;})(remainder);
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```
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## --seed-contents--
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```js
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// Only change code below this line
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var remainder;
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```
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# --solutions--
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```js
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var remainder = 11 % 3;
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```
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