* 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>
1.8 KiB
1.8 KiB
id, title, challengeType, forumTopicId, dashedName
id | title | challengeType | forumTopicId | dashedName |
---|---|---|---|---|
587d7b84367417b2b2512b37 | 捕捉单引号和双引号的混合用法 | 1 | 301188 | catch-mixed-usage-of-single-and-double-quotes |
--description--
JavaScript允许使用单引号('')和双引号("")声明字符串。决定使用哪一个通常看个人偏好,但有一些例外。
如果字符串中有缩写或存在一段带引号的文本,你就会明白为什么 JavaScript 允许两种引号了。请注意,不要提前用引号结束字符串,这会导致语法错误。
下面是混合使用引号的一些示例:
// These are correct:
const grouchoContraction = "I've had a perfectly wonderful evening, but this wasn't it.";
const quoteInString = "Groucho Marx once said 'Quote me as saying I was mis-quoted.'";
// This is incorrect:
const uhOhGroucho = 'I've had a perfectly wonderful evening, but this wasn't it.';
当然,只使用一种引号是可以的。你可以使用反斜杠 (\
) 转义字符来转义字符串中的引号:
// 一种引号的正确使用方式
const allSameQuotes = 'I\'ve had a perfectly wonderful evening, but this wasn\'t it.';
--instructions--
修复字符串,对href
属性的值使用不同的引号,或者转义现有的引号。注意,整个字符串外面的双引号要保留。
--hints--
你应通过更改或转义来修复href
的值 '#Home' 周围的引号。
assert(code.match(/<a href=\s*?('|\\")#Home\1\s*?>/g));
你应该在整个字符串外围保留双引号。
assert(code.match(/"<p>.*?<\/p>";/g));
--seed--
--seed-contents--
let innerHtml = "<p>Click here to <a href="#Home">return home</a></p>";
console.log(innerHtml);
--solutions--
let innerHtml = "<p>Click here to <a href=\"#Home\">return home</a></p>";
console.log(innerHtml);