如何解决这个 Reactjs Eslint 关于 'index' 的警告已定义但从未使用

Question

Feels like a mistake to me how can I not have an "index" when iterate a map. Any ide?

Answer 1

You're not using the index returned from the map function. You're declaring 'id' inside of it and assigning a value returned from "uniqueId" somewhere else in your code.

This is not a bug.

If you don't want to see the warning, you could:

• not use "index", since in fact you're not using it.
• replace it with _ , that way eslint will understand that you're discarding that parameter

Edit: As pointed by Brian Thompson, you probably want to use the index anyway, to get a unique id without having to create one by yourself:

Resume.article.map((element, idx) => {
  articles.push(
    <div className="column" key={idx}>
      ...
    </div>
  )
}

Answer 2

You're not using/referencing index anywhere, so just remove it from the parameters. You don't need it.