<script src="//unpkg.com/alpinejs" defer></script>
<div x-data="{ open: false }">
<button @click="open = true">Expand</button>
<span x-show="open">
Content...
</span>
</div>
Simple.
Lightweight.
Powerful as hell.
Alpine is a rugged, minimal tool for composing behavior directly in your markup. Think of it like jQuery for the modern web. Plop in a script tag and get going.
Alpine is a collection of 15 attributes, 6 properties, and 2 methods.
There is no better way to get a feel for what Alpine is and what it can do, than by seeing it for yourself:
Declare a new Alpine component and its data for a block of HTML
<div x-data="{ open: false }">
...
</div>
Dynamically set HTML attributes on an element
<div x-bind:class="! open ? 'hidden' : ''">
...
</div>
Listen for browser events on an element
<button x-on:click="open = ! open">
Toggle
</button>
Set the text content of an element
<div>
Copyright ©
<span x-text="new Date().getFullYear()"></span>
</div>
Set the inner HTML of an element
<div x-html="(await axios.get('/some/html/partial')).data">
...
</div>
Synchronize a piece of data with an input element
<div x-data="{ search: '' }">
<input type="text" x-model="search">
Searching for: <span x-text="search"></span>
</div>
Toggle the visibility of an element
<div x-show="open">
...
</div>
Transition an element in and out using CSS transitions
<div x-show="open" x-transition>
...
</div>
Repeat a block of HTML based on a data set
<template x-for="post in posts">
<h2 x-text="post.title"></h2>
</template>
Conditionally add/remove a block of HTML from the page entirely
<template x-if="open">
<div>...</div>
</template>
Run code when an element is initialized by Alpine
<div x-init="date = new Date()"></div>
Execute a script each time one of its dependencies change
<div x-effect="console.log('Count is '+count)"></div>
Reference elements directly by their specified keys using the $refs magic property
<input type="text" x-ref="content">
<button x-on:click="navigator.clipboard.writeText($refs.content.value)">
Copy
</button>
Hide a block of HTML until after Alpine is finished initializing its contents
<div x-cloak>
...
</div>
Prevent a block of HTML from being initialized by Alpine
<div x-ignore>
...
</div>
Access a global store registered using Alpine.store(...)
<h1 x-text="$store.site.title"></h1>
Reference the current DOM element
<div x-init="new Pikaday($el)"></div>
Dispatch a custom browser event from the current element
<div x-on:notify="...">
<button x-on:click="$dispatch('notify')">...</button>
</div>
Watch a piece of data and run the provided callback anytime it changes
<div x-init="$watch('count', value => {
console.log('count is ' + value)
})">...</div>
Reference an element by key (specified using x-ref)
<div x-init="$refs.button.remove()">
<button x-ref="button">Remove Me</button>
</div>
Wait until the next "tick" (browser paint) to run a bit of code
<div
x-text="count"
x-text="$nextTick(() => {"
console.log('count is ' + $el.textContent)
})
>...</div>
Reuse a data object and reference it using x-data
<div x-data="dropdown">
...
</div>
...
Alpine.data('dropdown', () => ({
open: false,
toggle() {
this.open = ! this.open
}
}))
Declare a piece of global, reactive, data that can be accessed from anywhere using $store
<button @click="$store.notifications.notify('...')">
Notify
</button>
...
Alpine.store('notifications', {
items: [],
notify(message) {
this.items.push(message)
}
})
I hope you find Alpine to be a breath of fresh air. Silence among noise.
- Caleb