Crate seed

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See the github Readme for details

Counter Example

use seed::{prelude::*, *};

// `init` describes what should happen when your app started.
fn init(_: Url, _: &mut impl Orders<Msg>) -> Model {
    Model { counter: 0 }
}

// `Model` describes our app state.
struct Model { counter: i32 }

// `Msg` describes the different events you can modify state with.
enum Msg {
    Increment,
}

// `update` describes how to handle each `Msg`.
fn update(msg: Msg, model: &mut Model, _: &mut impl Orders<Msg>) {
    match msg {
        Msg::Increment => model.counter += 1,
    }
}

// `view` describes what to display.
fn view(model: &Model) -> Node<Msg> {
    div![
        "This is a counter: ",
        C!["counter"],
        button![
            model.counter,
            ev(Ev::Click, |_| Msg::Increment),
        ],
    ]
}

#[wasm_bindgen(start)]
pub fn start() {
    // Mount the `app` to the element with the `id` "app".
    App::start("app", init, update, view);
}

Re-exports

pub use crate::app::App;

pub use crate::browser::dom::cast::to_drag_event;

pub use crate::browser::dom::cast::to_html_el;

pub use crate::browser::dom::cast::to_input;

pub use crate::browser::dom::cast::to_keyboard_event;

pub use crate::browser::dom::cast::to_mouse_event;

pub use crate::browser::dom::cast::to_select;

pub use crate::browser::dom::cast::to_textarea;

pub use crate::browser::dom::cast::to_touch_event;

pub use crate::browser::dom::cast::to_wheel_event;

pub use crate::browser::url::Url;

pub use crate::browser::util;

pub use crate::browser::util::body;

pub use crate::browser::util::canvas;

pub use crate::browser::util::canvas_context_2d;

pub use crate::browser::util::error;Deprecated

pub use crate::browser::util::html_document;

pub use crate::browser::util::log;Deprecated

pub use crate::virtual_dom::Attrs;

pub use crate::virtual_dom::EventHandler;

pub use crate::virtual_dom::Style;

pub use futures;

pub use wasm_bindgen_futures;

Modules

app

browser

dom_entity_names

future

Asynchronous values.

helpers

prelude

Introduce El and Tag into the global namespace for convenience (El will be repeated often in the output type of components), and UpdateEl, which is required for element-creation macros, input event constructors, and the History struct. Expose the wasm_bindgen prelude.

shortcuts

This file exports helper macros for element creation, populated by a higher-level macro, and macros for creating the parts of elements. (attrs, style, events)

virtual_dom

Macros

C

Add classes into the element.

IF

IF!(predicate => expression) -> Option<expression value>

Script

a

abbr

address

altGlyph

altGlyphDef

altGlyphItem

animate

animateColor

animateMotion

animateTransform

applet

area

article

aside

attrs

Provide a shortcut for creating attributes.

audio

b

bdi

bdo

blockquote

br

button

canvas

caption

circle

cite

classDeprecated

Convenience macro. Ideal when there are multiple classes, and no other attrs.

clipPath

code

col

colgroup

content

cursor

custom

data

datalist

dd

defs

del

desc

details

dfn

dialog

dir

discard

div

dl

dt

element

ellipse

em

embed

empty

feBlend

feColorMatrix

feComponentTransfer

feComposite

feConvolveMatrix

feDiffuseLighting

feDisplacementMap

feDropShadow

feFlood

feFuncA

feFuncB

feFuncG

feFuncR

feGaussianBlur

feImage

feMerge

feMergeNode

feMorphology

feOffset

feSpecularLighting

feTile

feTurbulence

fieldset

figcaption

figure

filter

font

footer

foreignObject

form

g

glyph

glyphRef

h1

h2

h3

h4

h5

h6

hatch

hatchpath

header

hgroup

hkern

hr

i

id

Convenience macro, for brevity.

iframe

image

img

input

ins

kbd

key_value_pairs

A key-value pairs, where the keys and values must implement ToString.

label

legend

li

line_

linearGradient

main

map

mark

marker

mask

menu

menuitem

mesh

meshGradient

meshPatch

meshrow

metadata

meter

mpath

nav

nodes

Converts items to Vec<Node<Ms> and returns flattened Vec<Node<Ms>.

noembed

noscript

object

ol

optgroup

option

output

p

param

path

pattern

picture

plain

polygon

polyline

pre

progress

q

radialGradient

raw

raw_svg

rb

rect

rp

rt

rtc

ruby

s

samp

section

select

set

shadow

slot

small

solidcolor

source

span

stop

strong

struct_urls

Create struct Urls. It’s useful especially for building Urls in nested modules.

style

Provide a shortcut for creating styles.

sub

summary

sup

svg

switch

symbol

table

tbody

td

template

text

textPath

textarea

tfoot

th

thead

time

title

tr

track

tref

tspan

tt

u

ul

unit

unknown

use

var

video

view

vkern

wbr

with_dollar_sign

Allows to write nested macros.

Structs

JsFuture

A Rust Future backed by a JavaScript Promise.

Traits

FutureExt

An extension trait for Futures that provides a variety of convenient adapters.

TryFutureExt

Adapters specific to Result-returning futures

Functions

document

Convenience function to access the web_sys DOM document.

empty

Create an element flagged in a way that it will not be rendered. Useful in ternary operations.

history

Convenience function to access the web_sys history.

set_intervalDeprecated

A high-level wrapper for web_sys::window.set_interval_with_callback_and_timeout_and_arguments_0:

set_timeoutDeprecated

See set_interval

spawn_local

Runs a Rust Future on the current thread.

window

Convenience function to avoid repeating expect logic.