82 releases

0.7.0	Nov 30, 2024
0.7.0-rc0	Oct 22, 2024
0.7.0-preview2	~~Apr 29, 2024~~
0.6.9	Mar 4, 2024
0.0.3	Nov 27, 2022

#1853 in Web programming

33,537 downloads per month
Used in 35 crates (31 directly)

MIT license

210KB
4K SLoC

Leptos Meta

Leptos Meta allows you to modify content in a document’s <head> from within components using the Leptos web framework.

Document metadata is updated automatically when running in the browser. For server-side rendering, after the component tree is rendered to HTML, ServerMetaContextOutput::inject_meta_context will inject meta tags into a stream of HTML inside the <head>.

use leptos::prelude::*;
use leptos_meta::*;

#[component]
fn MyApp() -> impl IntoView {
    // Provides a [`MetaContext`], if there is not already one provided.
    provide_meta_context();

    let (name, set_name) = create_signal("Alice".to_string());

    view! {
      <Title
        // reactively sets document.title when `name` changes
        text=move || name.get()
        // applies the `formatter` function to the `text` value
        formatter=|text| format!("“{text}” is your name")
      />
      <main>
        <input
          prop:value=move || name.get()
          on:input=move |ev| set_name.set(event_target_value(&ev))
        />
      </main>
    }
}

Feature Flags

csr Client-side rendering: Generate DOM nodes in the browser
ssr Server-side rendering: Generate an HTML string (typically on the server)
hydrate Hydration: use this to add interactivity to an SSRed Leptos app
stable By default, Leptos requires nightly Rust, which is what allows the ergonomics of calling signals as functions. Enable this feature to support stable Rust.

Important Note: You must enable one of csr, hydrate, or ssr to tell Leptos which mode your app is operating in.

Dependencies

~21–34MB
~521K SLoC