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I know simple stuff like onload onerror but I can't find what data-async-context use for

also I know what javascript:alert() doe's but I don't understand how I can use query: and if query is like Element.querySelector() in javascript

can you please help me understand how to use it?

i tried to look at https://metacpan.org/pod/HTML::Query

eyal
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    [Duplicate](https://google.com/search?q=site%3Astackoverflow.com+html+what+are+data+attributes) of [what are data-\* HTML attributes?](https://stackoverflow.com/q/30417852/4642212). What `async-context` and `query:` mean, specifically, depends on the application, framework, or library. This doesn’t have any specific meaning in HTML or JavaScript itself. – Sebastian Simon Feb 17 '21 at 22:26
  • can you show me an example how to use `query:` – eyal Feb 17 '21 at 22:27
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    No, I can’t. As I said, the meaning of `query:` depends on whatever application uses it. I don’t know which technology stack you’re using, since you’ve never mentioned it. It has nothing to do with `querySelector`. [Googling `"data-async-context"`](https://google.com/search?q="data-async-context") shows a few results. Maybe one of them explains what it means. – Sebastian Simon Feb 17 '21 at 22:33
  • ok ty i understand – eyal Feb 17 '21 at 22:36

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