mdn/translated-content

[ja] Array.prototype.indexOf() の返値が false になっている箇所を -1 に修正する提案

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#29,703 opened on Oct 8, 2025

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good first issuel10n-ja

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Description

MDN URL

https://developer.mozilla.org/ja/docs/Web/JavaScript/Reference/Global_Objects/Array/indexOf

この問題に関する節や見出しはどこですか。

https://developer.mozilla.org/ja/docs/Web/JavaScript/Reference/Global_Objects/Array/indexOf#fromindex

不完全、不親切、不完全であった情報は何ですか。

  • fromIndex >= array.length の場合、配列の検索は行われず、 false が返されます。

どう表示されるべきだと思いますか。

  • fromIndex >= array.length の場合、配列の検索は行われず、 -1 が返されます。

補足情報となるリンク、参考資料、引用文献はありますか。

No response

他に共有したいことはありますか。

No response

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Contributor guide

Research direction
Locate the file in the Japanese translation repository and change the word 'false' to ' 1' in the fromIndex description.
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None
Domain
documentation
Issue type
Documentation
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
1
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Under 1 hour
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Fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
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Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
95