# Chat Create a custom chat feed or AI prompt interface. ## Layout Columns Use Tailwind's [grid column](https://tailwindcss.com/docs/grid-template-columns) utility classes to define horizontal columns for your layout. ```astro

(nav)

(feed)

(online)

``` ## Layout Rows Use Tailwind's [grid row](https://tailwindcss.com/docs/grid-template-rows) utility classes to define vertical layout rows for your layout. ```astro

(search)

(list)

(footer)

(feed)

Lorem, ipsum dolor sit amet consectetur adipisicing elit. Reprehenderit dolor ullam, qui et itaque quam distinctio dicta nostrum veritatis harum iure hic sequi aperiam, explicabo earum totam deserunt. Fugiat, temporibus.

(prompt)

``` ## Message Feed The feed simply loops through the available feed data. Each `

` tag represents a single *bubble* element.

```astro
---
let messageFeed = [
	{
		id: 0,
		host: true,
		avatar: 48,
		name: 'Jane',
		timestamp: 'Yesterday @ 2:30pm',
		message: 'Some message text.',
		color: 'variant-soft-primary',
	},
	{
		id: 1,
		host: false,
		avatar: 14,
		name: 'Michael',
		timestamp: 'Yesterday @ 2:45pm',
		message: 'Some message text.',
		color: 'variant-soft-primary',
	},
];
---


	
	{
		messageFeed.map((bubble) => {
			// Determine if host/guest role
			const role = bubble.host === true ? 'host' : 'guest';
			// Render the bubble template
			return {JSON.stringify({ role, ...bubble }, null, 2)};
		})
	}


```

## Message Bubbles

Provide styling to each bubble element.

```astro
---
let messageFeed = [
	{
		id: 0,
		host: true,
		avatar: 48,
		name: 'Jane',
		timestamp: 'Yesterday @ 2:30pm',
		message: 'Some message text.',
		color: 'preset-tonal-primary',
	},
	{
		id: 1,
		host: false,
		avatar: 14,
		name: 'Michael',
		timestamp: 'Yesterday @ 2:45pm',
		message: 'Some message text.',
		color: 'preset-tonal-primary',
	},
];
---


	
	{
		messageFeed.map((bubble) => {
			return (
				<>
					{/* If Host, else Guest */}
					{bubble.host ? (
						// Host Bubble
						
							{/*  */}
							
								
									{bubble.name}
									{bubble.timestamp}
								
								{bubble.message}
							
						
					) : (
						// Guest Bubble
						
							
								
									{bubble.name}
									{bubble.timestamp}
								
								{bubble.message}
							
							{/*  */}
						
					)}
				
			);
		})
	}


```

## Prompt

Use Skeleton's [input group](/docs/tailwind/forms#groups) styles to create a custom text prompt.

***

## Scroll to Bottom

Bind your scrollable feed panel element reference ([Svelte](https://svelte.dev/docs/svelte/bind) | [React](https://react.dev/learn/referencing-values-with-refs#refs-and-the-dom)), then use [scrollTo](https://developer.mozilla.org/en-US/docs/Web/API/Element/scrollTo) to scroll the panel to the bottom on demand. Scroll behavior can be set via `behavior: 'smooth'`.

```ts
function scrollChatBottom(behavior?: 'auto' | 'instant' | 'smooth' = 'smooth') {
	// `elemChat` represents our scrollable panel element
	elemChat.scrollTo({ top: elemChat.scrollHeight, behavior });
}
```

## Add a Message

Below we'll cover how to append the message feed with a new message from the host user. Per our above examples, we'll use the same `messageFeed` data structure.

```ts
let messageFeed = [
	/* ...*/
];
```

Then bind to the textarea for your prompt in order to capture any message typed by the user.

Here's an example of how we might append a new message to the `messageFeed` array.

```ts
function addMessage(): void {
	const newMessage = {
		id: messageFeed.length,
		host: true,
		avatar: 48,
		name: 'Jane',
		timestamp: new date(),
		message: elemPrompt.value,
		color: 'preset-tonal-primary',
	};
	// Append the new message to the message feed
	messageFeed = [...messageFeed, newMessage];
	// Clear the textarea message
	elemPrompt.value = '';
	// Smoothly scroll to the bottom of the feed
	setTimeout(() => {
		scrollChatBottom('smooth');
	}, 0);
}
```

This can be triggered when the prompt's SEND button is clicked.

```svelte

```