* 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>
1.4 KiB
1.4 KiB
id, title, challengeType, videoUrl, forumTopicId, dashedName
id | title | challengeType | videoUrl | forumTopicId | dashedName |
---|---|---|---|---|---|
587d7b7e367417b2b2512b24 | 使用三元运算符 | 1 | https://scrimba.com/c/c3JRmSg | 301181 | use-the-conditional-ternary-operator |
--description--
条件运算符(也称为三元运算符)的用处就像写成一行的 if-else 表达式
语法如下所示:
condition ? statement-if-true : statement-if-false;
以下函数使用 if-else 语句来检查条件:
function findGreater(a, b) {
if(a > b) {
return "a is greater";
}
else {
return "b is greater";
}
}
上面的函数使用条件运算符写法如下:
function findGreater(a, b) {
return a > b ? "a is greater" : "b is greater";
}
--instructions--
在checkEqual
函数中使用条件运算符检查两个数字是否相等,函数应该返回 "Equal" 或 "Not Equal"
--hints--
checkEqual
应该使用条件运算符。
assert(/.+?\s*?\?\s*?.+?\s*?:\s*?.+?/.test(code));
checkEqual(1, 2)
应该返回 "Not Equal"。
assert(checkEqual(1, 2) === 'Not Equal');
checkEqual(1, 1)
应该返回 "Equal"。
assert(checkEqual(1, 1) === 'Equal');
checkEqual(1, -1)
应该返回 "Not Equal"。
assert(checkEqual(1, -1) === 'Not Equal');
--seed--
--seed-contents--
function checkEqual(a, b) {
}
checkEqual(1, 2);
--solutions--
function checkEqual(a, b) {
return a === b ? "Equal" : "Not Equal";
}