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docs: explain difference between @placeholder and @loading #54779

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docs: explain difference between @placeholder and @loading #54779

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4 changes: 3 additions & 1 deletion adev/src/content/guide/defer.md
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Expand Up @@ -56,7 +56,9 @@ Note: Certain triggers may require the presence of either a `@placeholder` or a

### `@loading`

The `@loading` block is an optional block that allows you to declare content that will be shown during the loading of any deferred dependencies. For example, you could show a loading spinner. Similar to `@placeholder`, the dependencies of the `@loading` block are eagerly loaded.
The `@loading` block is an optional block that allows you to declare content that will be shown during the loading of any deferred dependencies. Its dependences are eagerly loaded (similar to `@placeholder`).

For example, you could show a loading spinner. Once loading has been triggered, the `@loading` block replaces the `@placeholder` block.

The `@loading` block accepts two optional parameters to specify the `minimum` amount of time that this placeholder should be shown and amount of time to wait `after` loading begins before showing the loading template. `minimum` and `after` parameters are specified in time increments of milliseconds (ms) or seconds (s). Just like `@placeholder`, these parameters exist to prevent fast flickering of content in the case that the deferred dependencies are fetched quickly. Both the `minimum` and `after` timers for the `@loading` block begins immediately after the loading has been triggered.

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