0
0

Delete article

Deleted articles cannot be recovered.

Draft of this article would be also deleted.

Are you sure you want to delete this article?

More than 3 years have passed since last update.

javascript関数ドリル 初級編compact関数実相のアウトプット

Last updated at Posted at 2020-09-10

##compact関数の課題内容
詳細はこちら
   ↓
https://js-drills.com/blog/compact/

##compact関数の取り組む前の状態
自力でやった時にtruesyのみをとるのに戸惑った

##compact関数に取り組んだ後の状態
truesyのみを取りたいときはarray[i]すればいいことに気づけた

##compact関数の実装コード(答えを見る前)
function compact(array)
const compactArray=[]

for(let i=0;i<array.length;i++){
if(){
compactArray.push(
}

##uniq関数の実装コード(答えを見た後)

function compact(array) {
  const compactedArray = [];

  for(let i = 0; i < array.length; i++) {
    if(array[i]) {
      compactedArray.push(array[i]);
    }
  }

  return compactedArray;
}


const compactedValues = compact([0, 1, false, 2, '', 3, 4, false, '', 1000]);
console.log(compactedValues);
// => [1, 2, 3]
0
0
0

Register as a new user and use Qiita more conveniently

  1. You get articles that match your needs
  2. You can efficiently read back useful information
  3. You can use dark theme
What you can do with signing up
0
0

Delete article

Deleted articles cannot be recovered.

Draft of this article would be also deleted.

Are you sure you want to delete this article?