Feedback Loading

Loading

Loading indicator for page transitions and form submissions.

The Loading component provides a top progress bar that automatically appears during LiveView page transitions and form submissions. It provides visual feedback that something is happening.

Import

use PUI

# or

import PUI.Loading

Basic Usage

Add the topbar to your root layout (typically in root.html.heex):

<PUI.Loading.topbar />

Loading Demo

The loading topbar is already active on this page. Navigate between docs pages to see it in action at the top of the screen.

The progress bar will automatically show during:

  • LiveView navigation (page transitions)
  • phx-click events while processing
  • Form submissions

Custom Styling

Override the default appearance with custom classes:

<PUI.Loading.topbar class="bg-orange-500! animate-pulse shadow-orange-500/20!" />

Color Examples

<!-- Blue gradient -->

<PUI.Loading.topbar class="bg-blue-500!" />



<!-- Green -->

<PUI.Loading.topbar class="bg-green-500!" />



<!-- Custom with animation -->

<PUI.Loading.topbar class="bg-purple-500! animate-pulse" />

Custom Delay

Control how long to wait before showing the bar (prevents flashing on fast loads):

<!-- Show immediately -->

<PUI.Loading.topbar delay={0} />



<!-- Wait 500ms before showing (default: 300ms) -->

<PUI.Loading.topbar delay={500} />

API Reference

Attributes

Name Type Default Description
delay integer 300 Milliseconds to wait before showing the bar
class string "" Additional CSS classes for custom styling