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I'm porting a web component implementation from React (material-ui) to Solid JS. With MUI, I found a workaround to make JSS attach the style elements to the web component's shadow DOM rather than t…
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Cover slot-related topics from here: https://lit.dev/docs/components/shadow-dom/
Possibly add setting a class on a slotted child. For example, implementing something like a select or menu element t…
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通常情况下，在一个HTML页面上，我们总能够通过DOM API访问想要访问的HTML元素，进行操作。
如果基于某种原因，允许用户注入代码到网页上，但又要禁止用户对DOM对象进行操作，即只允许用户调用我们提供的API，不允许用户通过注入的JS来修改我们创建的UI组件甚至整个网页内容，那么我们要怎么做呢？
我们基本上无法通过JS来禁止用户通过注入的JS操作DOM，因为window对象、do…
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_From @tomalec on January 10, 2018 16:10_
### Description
Shadow DOM styles are not scoped for vanilla JS Custom Elements and shadow DOM content does not get `style-scope my-element` class when elem…
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a11ysuite complains about duplicate ids across shadow boundaries...
```
```
```
//Snippet from paper-checkbox
```
Resulting output:
```
Error: Error: AX_HTML_02 (An element's ID must…
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参考资料：
1. https://developer.mozilla.org/en-US/docs/Web/API/Web_components
2. https://kinsta.com/blog/web-components/
3. https://www.albertaz.com/blog/web-components-ststus
4. https://www.zhoulujun.…
iolh updated
2 months ago
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When discussing #7922, I raised a concern that the current implementation of `::slotted` (which matches selectors based on their light DOM relationships, regardless of slot assignments) could be compo…
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### Describe the problem
Using the customElement as a wrapper as itself instead of the ....
I saw your comment:
```js
// TODO: Better than , but: Is a wrapper entirely necessary? Why not just se…
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I'm using Goober with Preact (and [Twin](https://github.com/ben-rogerson/twin.macro)), and I'm having some difficulties making Goober play ball with Shadow DOM.
When I try to run something like thi…
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Hi, I was trying to use three-elements inside a LitElement-based web component with Shadow DOM enabled and ended up finding that the current way of referencing other three objects by a selector [isn't…