You can make up HTML tags

Re:You can make up HTML tags by rasso on Monday December 29, 2025 @12:54AM (#46417871)

Beware that connectedCallback runs _every time_ a custom element is added to the dom. So you should make sure to only add event listeners once by tracking internally if the element was already initialized.

[ Parent | on HN ]

Re:You can make up HTML tags by yawaramin on Monday December 29, 2025 @09:51PM (#46428987)

Thanks, that's good to know. In some contexts I don't think a custom element is ever added to the DOM more than once, eg in htmx I am responding with HTML markup which is then injected into the page and then just kept there, possibly 'forever' or at least until it is replaced by some new markup from a new response.

[ Parent | on HN ]