Attribution and modifications for WWJ-3392

Adapted documentation

- “Using templates and slots” by Mozilla Contributors:
  https://developer.mozilla.org/en-US/docs/Web/API/Web_components/Using_templates_and_slots
- “Using custom elements” by Mozilla Contributors:
  https://developer.mozilla.org/en-US/docs/Web/API/Web_components/Using_custom_elements
- “Using shadow DOM” by Mozilla Contributors:
  https://developer.mozilla.org/en-US/docs/Web/API/Web_components/Using_shadow_DOM

MDN states that its documentation is available under CC BY-SA 2.5 or any later version. This Chinese translation and adaptation of the documentation is shared under CC BY-SA 2.5 or any later version. MDN documents code samples separately: samples added on/after 2010-08-20 are CC0 and earlier samples are MIT, but MDN says the current Yari platform does not identify which category an individual sample belongs to. This package makes no sample-specific CC0 date claim. License information: https://creativecommons.org/licenses/by-sa/2.5/ . The applicable license text is available at https://creativecommons.org/licenses/by-sa/2.5/legalcode.en . MDN's attribution and code-sample policy is at https://developer.mozilla.org/en-US/docs/MDN/Writing_guidelines/Attrib_copyright_license .

Modifications: translated into Chinese; combined material from the three linked guides; shortened and restyled examples; added a template-presence check and a host-scoped selector; and added explanatory notes about lifecycle behavior, CSS inheritance, compatibility, and security. No MDN screenshots or other external images are included.

Original image

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This is an independent translation and adaptation. It is not an official MDN or Mozilla publication and is not endorsed by MDN or Mozilla.