whatwg/html

Unclear if error event from "update the image data" matches implementations

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#3,839 建立於 2018年7月22日

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good first issuetopic: img

描述

Attempting to verify the behaviour of step 10 of update the image data, I ran this test in Firefox, Safari, and Chrome on macOS. Each browser only displayed "error1". As far as I can tell img elements with either a srcset attribute or a picture parent should cause the algorithm to be invoked, and then end up with a null selected source. This doesn't appear to match the behaviour of any browser I've tried, however.

cc @zcorpan

貢獻者指南

技術棧
無
領域
frontend
議題類型
bug
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
4
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
3-5 days
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
stale
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
needs investigation
前置要求
understanding of HTML specificationbrowser testing experience
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
20
研究方向
Investigate step 10 of the 'update the image data' algorithm in the HTML spec. Test the provided live DOM viewer example across browsers to confirm behavior. Discuss with maintainers (e.g., @zcorpan) to clarify the intended behavior and update the spec accordingly.
Unclear if error event from "update the image data" matches implementations · whatwg/html#3839 | Good First Issue