Oliver Eyton-Williams ee1e8abd87
feat(curriculum): restore seed + solution to Chinese (#40683)
* 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>
2021-01-12 19:31:00 -07:00

1.6 KiB

id, title, challengeType, forumTopicId, dashedName
id title challengeType forumTopicId dashedName
587d7db4367417b2b2512b93 全局匹配 1 301342 find-more-than-the-first-match

--description--

到目前为止,只能提取或搜寻一次模式匹配。

let testStr = "Repeat, Repeat, Repeat";
let ourRegex = /Repeat/;
testStr.match(ourRegex);
// Returns ["Repeat"]

若要多次搜寻或提取模式匹配,可以使用g标志。

let repeatRegex = /Repeat/g;
testStr.match(repeatRegex);
// Returns ["Repeat", "Repeat", "Repeat"]

--instructions--

使用正则表达式starRegex,从字符串twinkleStar中匹配到所有的"Twinkle"单词并提取出来。

注意:
在正则表达式上可以有多个标志,比如/search/gi

--hints--

你的正则表达式starRegex应该使用全局标志g

assert(starRegex.flags.match(/g/).length == 1);

你的正则表达式starRegex应该使用忽略大小写标志i

assert(starRegex.flags.match(/i/).length == 1);

你的匹配应该匹配单词'Twinkle'的两个匹配项。

assert(
  result.sort().join() ==
    twinkleStar
      .match(/twinkle/gi)
      .sort()
      .join()
);

你的匹配结果应该包含两个元素。

assert(result.length == 2);

--seed--

--seed-contents--

let twinkleStar = "Twinkle, twinkle, little star";
let starRegex = /change/; // Change this line
let result = twinkleStar; // Change this line

--solutions--

let twinkleStar = "Twinkle, twinkle, little star";
let starRegex = /twinkle/gi;
let result = twinkleStar.match(starRegex);