* 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>
53 lines
1.3 KiB
Markdown
53 lines
1.3 KiB
Markdown
---
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id: 587d7b83367417b2b2512b33
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title: 使用控制台检查变量值
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challengeType: 1
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forumTopicId: 18372
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dashedName: use-the-javascript-console-to-check-the-value-of-a-variable
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---
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# --description--
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Chrome 和 Firefox 都有出色的 JavaScript 控制台(也称为 DevTools),可以用来调试 JavaScript 代码
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可以在 Chrome 的菜单中找到“开发者工具”或 FireFox 的菜单中的 “Web 控制台”。如果你使用其他浏览器或手机,我们强烈建议你切换到桌面版 Firefox 或 Chrome。
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`console.log()`方法可能是最有用的调试工具,它可以将括号中的内容输出到控制台,将它放在代码中的关键点可以显示变量在当时的值。在查看输出之前,最好先想清楚输出应该是什么。在代码的合适位置打点来查看变量状态有助于定位问题。
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下面是输出 'Hello world!' 到控制台的示例:
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`console.log('Hello world!');`
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# --instructions--
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请使用`console.log()`方法在代码中注明的地方输出变量`a`的值。
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# --hints--
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你应使用`console.log()`来检查变量`a`的值。
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```js
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assert(code.match(/console\.log\(a\)/g));
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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 a = 5;
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let b = 1;
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a++;
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// Only change code below this line
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let sumAB = a + b;
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console.log(sumAB);
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```
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# --solutions--
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```js
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var a = 5; console.log(a);
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```
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