x-transition

Alpine provides a robust transitions utility out of the box. With a few x-transition directives, you can create smooth transitions between when an element is shown or hidden.

There are two primary ways to handle transitions in Alpine:

• The Transition Helper
• Applying CSS Classes

The transition helper

The simplest way to achieve a transition using Alpine is by adding x-transition to an element with x-show on it. For example:

<div x-data="{ open: false }">
    <button @click="open = ! open">Toggle</button>
 
    <span x-show="open" x-transition>
        Hello 👋
    </span>
</div>

As you can see, by default, x-transition applies pleasant transition defaults to fade and scale the revealing element.

You can override these defaults with modifiers attached to x-transition. Let's take a look at those.

Customizing duration

Initially, the duration is set to be 150 milliseconds when entering, and 75 milliseconds when leaving.

You can configure the duration you want for a transition with the .duration modifier:

<div ... x-transition.duration.500ms>

The above <div> will transition for 500 milliseconds when entering, and 500 milliseconds when leaving.

If you wish to customize the durations specifically for entering and leaving, you can do that like so:

<div ...
    x-transition:enter.duration.500ms
    x-transition:leave.duration.400ms
>

Customizing delay

You can delay a transition using the .delay modifier like so:

<div ... x-transition.delay.50ms>

The above example will delay the transition and in and out of the element by 50 milliseconds.

Customizing opacity

By default, Alpine's x-transition applies both a scale and opacity transition to achieve a "fade" effect.

If you wish to only apply the opacity transition (no scale), you can accomplish that like so:

<div ... x-transition.opacity>

Customizing scale

Similar to the .opacity modifier, you can configure x-transition to ONLY scale (and not transition opacity as well) like so:

<div ... x-transition.scale>

The .scale modifier also offers the ability to configure its scale values AND its origin values:

<div ... x-transition.scale.80>

The above snippet will scale the element up and down by 80%.

Again, you may customize these values separately for enter and leaving transitions like so:

<div ...
    x-transition:enter.scale.80
    x-transition:leave.scale.90
>

To customize the origin of the scale transition, you can use the .origin modifier:

<div ... x-transition.scale.origin.top>

Now the scale will be applied using the top of the element as the origin, instead of the center by default.

Like you may have guessed, the possible values for this customization are: top, bottom, left, and right.

If you wish, you can also combine two origin values. For example, if you want the origin of the scale to be "top right", you can use: .origin.top.right as the modifier.

Applying CSS classes

For direct control over exactly what goes into your transitions, you can apply CSS classes at different stages of the transition.

The following examples use TailwindCSS utility classes.

<div x-data="{ open: false }">
    <button @click="open = ! open">Toggle</button>
 
    <div
        x-show="open"
        x-transition:enter="transition ease-out duration-300"
        x-transition:enter-start="opacity-0 scale-90"
        x-transition:enter-end="opacity-100 scale-100"
        x-transition:leave="transition ease-in duration-300"
        x-transition:leave-start="opacity-100 scale-100"
        x-transition:leave-end="opacity-0 scale-90"
    >Hello 👋</div>
</div>

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