feat: Add head ordering doc part (#3771)

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Henry authored and GitHub committed 2025-04-04 10:55:27 -07:00
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@@ -16,6 +16,7 @@ Components that render into the head of the page do have a few key limitations:
- With the exception of the `Title` component, all components that render into the head cannot be modified after the first time they are rendered. - With the exception of the `Title` component, all components that render into the head cannot be modified after the first time they are rendered.
- Components that render into the head will not be removed even after the component is removed from the tree. - Components that render into the head will not be removed even after the component is removed from the tree.
- Components that render into the head do not have a guaranteed ordering; thus, components should ideally not be order dependent, since they may not appear in the head in the order they are defined.
## Example ## Example
@@ -33,6 +34,36 @@ fn RedirectToDioxusHomepageWithoutJS() -> Element {
} }
``` ```
## Overcoming Ordering Issues
Since Dioxus does not guarantee head element ordering, one can use es6 imports as a more predictable way to handle dependencies.
```rust
# use dioxus::prelude::*;
static HIGHLIGHT: Asset = asset!("/assets/highlight/es/highlight.min.js");
static RUST: Asset = asset!("/assets/highlight/es/languages/rust.min.js");
static STYLE: Asset = asset!("/assets/highlight/styles/atom-one-dark.css");
fn App() -> Element {
rsx! {
document::Link { rel: "stylesheet", href: STYLE }
document::Script {
type: "module",
r#"import hljs from "{HIGHLIGHT}";
import rust from "{RUST}";
hljs.registerLanguage('rust', rust);
hljs.highlightAll();"#
}
pre {
code {
class: "language-rust",
"fn main() {{\nprintln!(\"Hello, world!\");\n}}"
}
}
}
}
```
## Fullstack Rendering ## Fullstack Rendering
Head components are compatible with fullstack rendering, but only head components that are rendered in the initial render (before suspense boundaries resolve) will be rendered into the head. Head components are compatible with fullstack rendering, but only head components that are rendered in the initial render (before suspense boundaries resolve) will be rendered into the head.