whatwg/html

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

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#3,839 创建于 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

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frontend
议题类型
bug
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4
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needs investigation
前置要求
understanding of HTML specificationbrowser testing experience
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
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.