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

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id, title, challengeType, videoUrl, dashedName
id title challengeType videoUrl dashedName
587d8255367417b2b2512c72 在ES6集上使用.has和.size 1 use--has-and--size-on-an-es6-set

--description--

让我们看一下ES6 Set对象上可用的.has和.size方法。首先创建一个ES6 Set var set = new Set([1,2,3]); .has方法将检查该值是否包含在集合中。 var hasTwo = set.has(2); .size方法将返回一个表示Set var howBig = set.size;大小的整数var howBig = set.size;

--instructions--

在本练习中我们将数组和值传递给checkSet函数。您的函数应该从数组参数创建ES6集。查找该集是否包含value参数。找到集合的大小。并在数组中返回这两个值。

--hints--

checkSet([4, 5, 6], 3)应该返回[false3]

assert(
  (function () {
    var test = checkSet([4, 5, 6], 3);
    return DeepEqual(test, [false, 3]);
  })()
);

--seed--

--seed-contents--

function checkSet(arrToBeSet, checkValue){

   // Only change code below this line

   // Only change code above this line

}

--solutions--

function checkSet(arrToBeSet, checkValue){
var set = new Set(arrToBeSet);
var result = [
set.has(checkValue),
set.size
];
return result;
}