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>
59 lines
869 B
Markdown
59 lines
869 B
Markdown
---
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id: cf1111c1c11feddfaeb4bdef
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title: 减法运算
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challengeType: 1
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videoUrl: 'https://scrimba.com/c/cP3yQtk'
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forumTopicId: 18314
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dashedName: subtract-one-number-from-another-with-javascript
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---
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# --description--
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我们也可以在 JavaScript 中进行减法运算。
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JavaScript 中使用`-`来做减法运算。
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**示例**
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```js
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myVar = 12 - 6; // assigned 6
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```
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# --instructions--
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改变数字`0`让变量 difference 的值为`12`。
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# --hints--
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要使`difference`的值等于 12。
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```js
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assert(difference === 12);
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```
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只用 45 减去一个数。
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```js
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assert(/var\s*difference\s*=\s*45\s*-\s*[0-9]*;(?!\s*[a-zA-Z0-9]+)/.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(z){return 'difference = '+z;})(difference);
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```
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## --seed-contents--
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```js
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var difference = 45 - 0;
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```
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# --solutions--
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```js
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var difference = 45 - 33;
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```
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