[cssom-view] Let offsetWidth / offsetHeight report actual size?
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Description
<a href="#" id="a">
<div style="width: 40px; height: 40px; background-color: green;"></div>
</a>
<script>
document.write("This link has size: " + a.offsetWidth + "x" + a.offsetHeight + ".");
</script>
Firefox, Edge 42, IE 11: 40x40
Chrome, Safari: 0x0
According to current spec [1], I guess Chrome is correct. However, from a developer perspective, returning the actual size, as Firefox does, is way more useful and intuitive.
[1] Return the size of "the first CSS layout box associated with the element".
Is Firefox's behavior spec-able?
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with the CSSOM View specification's definition of offsetWidth and offsetHeight, especially the rule about the first CSS layout box. Compare that wording with the Firefox, Edge, IE, Chrome, and Safari behavior shown in the issue, then determine whether the specification should change; done means reaching and documenting a standards decision.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- css
- Domain
- web-dev
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 25/100