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>
70 lines
1.7 KiB
Markdown
70 lines
1.7 KiB
Markdown
---
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id: 587d7b84367417b2b2512b35
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title: 捕获拼错的变量名和函数名
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challengeType: 1
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forumTopicId: 301186
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dashedName: catch-misspelled-variable-and-function-names
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---
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# --description--
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`console.log()`和`typeof`方法是检查中间值和程序输出类型的两种主要方法。 现在是时候了解一下 bug 出现的常见的情形。一个语法级别的问题是打字太快带来的低级拼写错误。
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变量或函数名的错写、漏写或大小写弄混都会让浏览器尝试查找并不存在的东西，并报出“引用错误”。JavaScript 变量和函数名称区分大小写。
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# --instructions--
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修复代码中的两个拼写错误，以便`netWorkingCapital`计算有效。
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# --hints--
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检查计算 netWorkingCapital 值时使用的两个变量的拼写是否正确，控制台应该输出 "Net working capital is: 2"。
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```js
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assert(netWorkingCapital === 2);
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```
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代码中不应存在拼写错误的变量。
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```js
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assert(!code.match(/recievables/g));
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```
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应在代码中声明并正确使用`receivables`变量。
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```js
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assert(code.match(/receivables/g).length == 2);
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```
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代码中不应存在拼写错误的变量。
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```js
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assert(!code.match(/payable;/g));
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```
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应在代码中声明并正确使用`payables`变量。
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```js
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assert(code.match(/payables/g).length == 2);
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```
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# --seed--
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## --seed-contents--
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```js
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let receivables = 10;
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let payables = 8;
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let netWorkingCapital = recievables - payable;
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console.log(`Net working capital is: ${netWorkingCapital}`);
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```
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# --solutions--
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```js
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let receivables = 10;
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let payables = 8;
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let netWorkingCapital = receivables - payables;
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console.log(`Net working capital is: ${netWorkingCapital}`);
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```
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