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>
1.2 KiB
1.2 KiB
id, title, challengeType, videoUrl, forumTopicId, dashedName
| id | title | challengeType | videoUrl | forumTopicId | dashedName |
|---|---|---|---|---|---|
| bd7123c9c450eddfaeb5bdef | 使用方括号查找字符串中的第N个字符 | 1 | https://scrimba.com/c/cWPVJua | 18343 | use-bracket-notation-to-find-the-nth-character-in-a-string |
--description--
你也可以使用方括号来获得一个字符串中的其他位置的字符。
请记住，程序是从0开始计数，所以获取第一个字符实际上是[0]。
--instructions--
让我们使用方括号，把lastName变量的第三个字符赋值给thirdLetterOfLastName。
提示
如果你遇到困难了，看看secondLetterOfFirstName变量是如何做的。
--hints--
thirdLetterOfLastName的值应该是v。
assert(thirdLetterOfLastName === 'v');
你应该使用方括号。
assert(code.match(/thirdLetterOfLastName\s*?=\s*?lastName\[.*?\]/));
--seed--
--after-user-code--
(function(v){return v;})(thirdLetterOfLastName);
--seed-contents--
// Setup
var lastName = "Lovelace";
// Only change code below this line
var thirdLetterOfLastName = lastName; // Change this line
--solutions--
var lastName = "Lovelace";
var thirdLetterOfLastName = lastName[2];