More than 1 year has passed since last update.

役に立つ覚書

JavaScript

Last updated at 2022-08-18Posted at 2022-08-18

mapとfilterを使っただぶり削除の処理

    const noDuplicationTimeList = resultEntries
      .map((elem) => elem)
      ?.filter(
        (element, index, self) => self.findIndex((e) => e === element) === index
      )

    const categoryName = resultEntries
      ?.filter(
        (element, index, self) =>
          self.findIndex((e) => e === element) ===
          index
      )
      .map((elem) => elem)

You get articles that match your needs
You can efficiently read back useful information
You can use dark theme

What you can do with signing up