# How does Aurelia lookup Custom Tags?

**URL:** <https://discourse.aurelia.io/t/how-does-aurelia-lookup-custom-tags/4937>\
**Category:** vNext\
**Created:** [October 5, 2022, 8:25pm UTC](https://discourse.aurelia.io/t/how-does-aurelia-lookup-custom-tags/4937 "2022-10-05T20:25:50Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Kremnari](https://yyz1.discourse-cdn.com/flex027/user_avatar/discourse.aurelia.io/kremnari/32/2177_2.png) [@Kremnari](https://discourse.aurelia.io/u/Kremnari)\
**Post date:** [October 5, 2022, 8:25pm UTC](https://discourse.aurelia.io/t/how-does-aurelia-lookup-custom-tags/4937/1 "2022-10-05T20:25:50Z")

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When the dom changes, and Aurelia is looking up element tags, what files/functions does it go through? Where is the list of known html tags/js classes stored? Does it just look for the data in webpacks require/export list?

Ultimately, I’m looking to inject strings of html/js into Aurelia’s component library post bootstrap.