Error: Dynamic root HTML element id attribute - marko-js/marko GitHub Wiki

The id for the outermost HTML element of a component must be static. Components are uniquely identified by their id; if that id changes during a re-render, then diffing and patching will break.

Erroneous code

$ var id = input.id;

<div id=id/>

Fixed code

$ var id = input.id;

<div>
  <div id=id/>
</div>

If you don’t care about the exact value of the id, you can also have Marko generate one for you with id:scoped:

<div id:scoped=""/>

To automatically fix deprecated marko syntax, try the marko migrate command from the CLI.

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