Learn Sycamore-rust - 10 Code Examples & CST Typing Practice Test

Sycamore is a reactive, component-based web framework for Rust that allows developers to build fast, type-safe web applications with a declarative approach similar to React or Solid.js.

View all 10 Sycamore-rust code examples →

Simple Sycamore Component Sycamore Component with Button Click Sycamore Component with Input Binding Sycamore Component with Conditional Rendering Sycamore Component with Loop Sycamore Component with Nested Components Sycamore Component with Timer Sycamore Component with Form Sycamore Component with Conditional and Loop Combined Sycamore Component with Child Props

Learn SYCAMORE-RUST with Real Code Examples

Updated Nov 25, 2025

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Code Sample Descriptions

Simple Sycamore Component

# sycamore/demo/main.rs
use sycamore::prelude::*;

fn app<G: Html>() -> View<G> {
    view! {
        h1 {"Hello, Sycamore!"}
    }
}

fn main() {
    sycamore::render(app);
}

A basic Sycamore app displaying 'Hello, Sycamore!' in the browser.

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Sycamore Component with Button Click

# sycamore/demo/button.rs
use sycamore::prelude::*;

fn app<G: Html>() -> View<G> {
    let message = create_signal("Click the button!".to_string());
    view! {
        div {
        p { (message.get()) }
        button(on:click=move |_| message.set("Button clicked!".to_string())) {"Click Me"}
        }
    }
}

fn main() {
    sycamore::render(app);
}

A Sycamore component updating a message when a button is clicked.

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Sycamore Component with Input Binding

# sycamore/demo/input.rs
use sycamore::prelude::*;

fn app<G: Html>() -> View<G> {
    let name = create_signal(String::new());
    view! {
        div {
        input(bind:value=name)
        p {"Hello, " (name.get()) "!"}
        }
    }
}

fn main() {
    sycamore::render(app);
}

Binds input text to state and displays it.

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Sycamore Component with Conditional Rendering

# sycamore/demo/conditional.rs
use sycamore::prelude::*;

fn app<G: Html>() -> View<G> {
    let is_logged_in = create_signal(false);
    view! {
        div {
        (button(on:click=move |_| is_logged_in.set(!*is_logged_in.get())) {"Toggle"})
        (if *is_logged_in.get() {
        view! { p {"Welcome back!"} }
        } else {
        view! { p {"Please log in."} }
        })
        }
    }
}

fn main() {
    sycamore::render(app);
}

Shows different content based on a boolean signal.

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Sycamore Component with Loop

# sycamore/demo/loop.rs
use sycamore::prelude::*;

fn app<G: Html>() -> View<G> {
    let items = vec!["Item 1", "Item 2", "Item 3"];
    view! {
        ul {
        (Keyed(items, |item| item.clone(), |item| view! { li { (item) } }))
        }
    }
}

fn main() {
    sycamore::render(app);
}

Displays a list of items using a loop.

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Sycamore Component with Nested Components

# sycamore/demo/nested.rs
use sycamore::prelude::*;

#[component]
fn Child<G: Html>(cx: Scope) -> View<G> {
    view! { p {"Hello from Child"} }
}

#[component]
fn Parent<G: Html>(cx: Scope) -> View<G> {
    view! { div { Child() } }
}

fn main() {
    sycamore::render(|| Parent());
}

Parent component rendering a child component.

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Sycamore Component with Timer

# sycamore/demo/timer.rs
use sycamore::prelude::*;
use gloo_timers::callback::Interval;

fn app<G: Html>() -> View<G> {
    let time = create_signal(js_sys::Date::new_0().to_locale_time_string("en-US"));
    Interval::new(1000, move || {
        time.set(js_sys::Date::new_0().to_locale_time_string("en-US"));
    }).forget();
    view! {
        p { (time.get()) }
    }
}

fn main() {
    sycamore::render(app);
}

Updates a signal every second using a timer.

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Sycamore Component with Form

# sycamore/demo/form.rs
use sycamore::prelude::*;

fn app<G: Html>() -> View<G> {
    let name = create_signal(String::new());
    let message = create_signal(String::new());
    view! {
        div {
        input(bind:value=name)
        button(on:click=move |_| message.set(format!("Hello, {}!", name.get()))) {"Submit"}
        p { (message.get()) }
        }
    }
}

fn main() {
    sycamore::render(app);
}

Handles a simple form submission.

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Sycamore Component with Conditional and Loop Combined

# sycamore/demo/conditional_loop.rs
use sycamore::prelude::*;

fn app<G: Html>() -> View<G> {
    let show_first = create_signal(true);
    let list1 = vec!["A", "B", "C"];
    let list2 = vec!["X", "Y", "Z"];
    view! {
        div {
        button(on:click=move |_| show_first.set(!*show_first.get())) {"Toggle"}
        (if *show_first.get() {
        view! { Keyed(list1, |i| i.clone(), |i| view! { p { (i) } }) }
        } else {
        view! { Keyed(list2, |i| i.clone(), |i| view! { p { (i) } }) }
        })
        }
    }
}

fn main() {
    sycamore::render(app);
}

Displays different lists based on a toggle signal.

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Sycamore Component with Child Props

# sycamore/demo/child_props.rs
use sycamore::prelude::*;

#[component]
fn Child<G: Html>(cx: Scope, text: &'static str) -> View<G> {
    view! { p { (text) } }
}

#[component]
fn Parent<G: Html>(cx: Scope) -> View<G> {
    view! { div { Child("Hello from Props") } }
}

fn main() {
    sycamore::render(|| Parent());
}

Child component receiving props from parent.

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Frequently Asked Questions about Sycamore-rust

What is Sycamore-rust?

Sycamore is a reactive, component-based web framework for Rust that allows developers to build fast, type-safe web applications with a declarative approach similar to React or Solid.js.

What are the primary use cases for Sycamore-rust?

Single-page applications (SPAs) with Rust. Web apps requiring fine-grained reactivity and state management. Performance-critical front-end applications. Porting Rust logic directly to the client via WebAssembly. Replacing JS frameworks in Rust-centric full-stack projects

What are the strengths of Sycamore-rust?

Memory safety and type guarantees via Rust compiler. High-performance runtime in browser via WebAssembly. Fine-grained reactivity reduces unnecessary re-renders. Rust-native toolchain for full-stack Rust applications. Supports SSR for SEO-friendly applications

What are the limitations of Sycamore-rust?

Smaller ecosystem compared to JavaScript frameworks. Learning curve for developers new to Rust or reactive programming. WebAssembly binary size can be larger for complex apps. Limited pre-built UI component libraries. Debugging WebAssembly may be more complex than JS

How can I practice Sycamore-rust typing speed?

CodeSpeedTest offers 10+ real Sycamore-rust code examples for typing practice. You can measure your WPM, track accuracy, and improve your coding speed with guided exercises.

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Code Sample Descriptions

Simple Sycamore Component

# sycamore/demo/main.rs
use sycamore::prelude::*;

fn app<G: Html>() -> View<G> {
    view! {
        h1 {"Hello, Sycamore!"}
    }
}

fn main() {
    sycamore::render(app);
}

A basic Sycamore app displaying 'Hello, Sycamore!' in the browser.

Let’s Try →

Sycamore Component with Button Click

# sycamore/demo/button.rs
use sycamore::prelude::*;

fn app<G: Html>() -> View<G> {
    let message = create_signal("Click the button!".to_string());
    view! {
        div {
        p { (message.get()) }
        button(on:click=move |_| message.set("Button clicked!".to_string())) {"Click Me"}
        }
    }
}

fn main() {
    sycamore::render(app);
}

A Sycamore component updating a message when a button is clicked.

Let’s Try →

Sycamore Component with Input Binding

# sycamore/demo/input.rs
use sycamore::prelude::*;

fn app<G: Html>() -> View<G> {
    let name = create_signal(String::new());
    view! {
        div {
        input(bind:value=name)
        p {"Hello, " (name.get()) "!"}
        }
    }
}

fn main() {
    sycamore::render(app);
}

Binds input text to state and displays it.

Let’s Try →

Sycamore Component with Conditional Rendering

# sycamore/demo/conditional.rs
use sycamore::prelude::*;

fn app<G: Html>() -> View<G> {
    let is_logged_in = create_signal(false);
    view! {
        div {
        (button(on:click=move |_| is_logged_in.set(!*is_logged_in.get())) {"Toggle"})
        (if *is_logged_in.get() {
        view! { p {"Welcome back!"} }
        } else {
        view! { p {"Please log in."} }
        })
        }
    }
}

fn main() {
    sycamore::render(app);
}

Shows different content based on a boolean signal.

Let’s Try →

Sycamore Component with Loop

# sycamore/demo/loop.rs
use sycamore::prelude::*;

fn app<G: Html>() -> View<G> {
    let items = vec!["Item 1", "Item 2", "Item 3"];
    view! {
        ul {
        (Keyed(items, |item| item.clone(), |item| view! { li { (item) } }))
        }
    }
}

fn main() {
    sycamore::render(app);
}

Displays a list of items using a loop.

Let’s Try →

Sycamore Component with Nested Components

# sycamore/demo/nested.rs
use sycamore::prelude::*;

#[component]
fn Child<G: Html>(cx: Scope) -> View<G> {
    view! { p {"Hello from Child"} }
}

#[component]
fn Parent<G: Html>(cx: Scope) -> View<G> {
    view! { div { Child() } }
}

fn main() {
    sycamore::render(|| Parent());
}

Parent component rendering a child component.

Let’s Try →

Sycamore Component with Timer

# sycamore/demo/timer.rs
use sycamore::prelude::*;
use gloo_timers::callback::Interval;

fn app<G: Html>() -> View<G> {
    let time = create_signal(js_sys::Date::new_0().to_locale_time_string("en-US"));
    Interval::new(1000, move || {
        time.set(js_sys::Date::new_0().to_locale_time_string("en-US"));
    }).forget();
    view! {
        p { (time.get()) }
    }
}

fn main() {
    sycamore::render(app);
}

Updates a signal every second using a timer.

Let’s Try →

Sycamore Component with Form

# sycamore/demo/form.rs
use sycamore::prelude::*;

fn app<G: Html>() -> View<G> {
    let name = create_signal(String::new());
    let message = create_signal(String::new());
    view! {
        div {
        input(bind:value=name)
        button(on:click=move |_| message.set(format!("Hello, {}!", name.get()))) {"Submit"}
        p { (message.get()) }
        }
    }
}

fn main() {
    sycamore::render(app);
}

Handles a simple form submission.

Let’s Try →

Sycamore Component with Conditional and Loop Combined

# sycamore/demo/conditional_loop.rs
use sycamore::prelude::*;

fn app<G: Html>() -> View<G> {
    let show_first = create_signal(true);
    let list1 = vec!["A", "B", "C"];
    let list2 = vec!["X", "Y", "Z"];
    view! {
        div {
        button(on:click=move |_| show_first.set(!*show_first.get())) {"Toggle"}
        (if *show_first.get() {
        view! { Keyed(list1, |i| i.clone(), |i| view! { p { (i) } }) }
        } else {
        view! { Keyed(list2, |i| i.clone(), |i| view! { p { (i) } }) }
        })
        }
    }
}

fn main() {
    sycamore::render(app);
}

Displays different lists based on a toggle signal.

Let’s Try →

Sycamore Component with Child Props

# sycamore/demo/child_props.rs
use sycamore::prelude::*;

#[component]
fn Child<G: Html>(cx: Scope, text: &'static str) -> View<G> {
    view! { p { (text) } }
}

#[component]
fn Parent<G: Html>(cx: Scope) -> View<G> {
    view! { div { Child("Hello from Props") } }
}

fn main() {
    sycamore::render(|| Parent());
}

Child component receiving props from parent.

Let’s Try →

Frequently Asked Questions about Sycamore-rust

What is Sycamore-rust?

Sycamore is a reactive, component-based web framework for Rust that allows developers to build fast, type-safe web applications with a declarative approach similar to React or Solid.js.

What are the primary use cases for Sycamore-rust?

What are the strengths of Sycamore-rust?

What are the limitations of Sycamore-rust?

How can I practice Sycamore-rust typing speed?

CodeSpeedTest offers 10+ real Sycamore-rust code examples for typing practice. You can measure your WPM, track accuracy, and improve your coding speed with guided exercises.