Component with Timer - Yew Typing CST Test
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Component with Timer — Yew Code
Updates state every second using IntervalService.
# yew/demo/timer.rs
use yew::prelude::*;
use gloo_timers::callback::Interval;
struct Model {
current_time: String,
}
impl Component for Model {
type Message = ();
type Properties = ();
fn create(ctx: &Context<Self>) -> Self {
let model = Model { current_time: "".into() };
let link = ctx.link().clone();
Interval::new(1000, move || link.send_message(())).forget();
model
}
fn update(&mut self, ctx: &Context<Self>, _msg: Self::Message) -> bool {
self.current_time = js_sys::Date::new_0().to_locale_time_string("en-US");
true
}
fn view(&self, ctx: &Context<Self>) -> Html {
html! { <p>{ &self.current_time }</p> }
}
}
fn main() {
yew::start_app::<Model>();
}Yew Language Guide
Yew is a modern Rust framework for building client-side web applications using WebAssembly (Wasm), providing a reactive component-based architecture similar to React.
Primary Use Cases
- ▸Single-page applications (SPA) in Rust
- ▸Interactive dashboards and data visualization
- ▸WebAssembly-based web games
- ▸Frontend for Rust backend services
- ▸High-performance, low-latency web UIs
Notable Features
- ▸Component-based architecture with reusable components
- ▸Supports reactive updates via message passing
- ▸Virtual DOM for efficient rendering
- ▸WebAssembly backend for fast execution
- ▸Strong Rust type system ensures memory safety
Origin & Creator
Yew was created by Denis Kolodin in 2018 and has since evolved with community contributions into a robust Rust frontend framework.
Industrial Note
Yew is targeted at developers seeking high-performance web applications leveraging Rust's safety, concurrency, and memory efficiency while running in the browser.