Svelte Scrollable Arrow effortlessly creates a horizontal navigation with sleek arrows for contents that require responsiveness. It aims to keep every child element as it is while wrapping with a scrollable container and a navigation.

Problem It Solves

Images, menus, and buttons can get unmanageable, requiring one to write a separate grid, list, or menus for wider and smaller devices. It solves this issue. You can still stuff all the menus or images in one line by making them scrollable.

Compatibility

This component works seamlessly on any device, including mobile, tablet, or desktop. It efficiently handles various scroll triggers, thanks to its utilization of the scroll event,

• Mouse wheels ✨
• Keyboard arrow events ✨ (Only if mouse is over the container to prevent every instance from listening to this event)
• Built-in arrows (←/→) ✨
• Touchevents ✨
• Version 1.1.0 now supports the drag event on Desktop.

And of course, this component is type-safe.

Use Cases

Basically, everywhere. It works like SwiftUI's ScrollView except that it comes with an arrow navigation, which can be hidden with an option. Cards, images, menus, buttons, links, or even album covers and tags. For most cases, it just makes you forget how the web should be designed in terms of responsiveness.

On the version [1.2.0], there was a new event added reachNearEnd. This opens the door for the horizontal endless scrolling.

Demo

Try on a website✨ (Click the search input).

Mobile Preview

Responsive

Automatically hides/shows arrows depending on the container size.

Installation

npm install svelte-scrollable-arrow

import { ScrollableArrow, ScrollableArrowItem } from 'svelte-scrollable-arrow';

Usage guide

All you have to do is to wrap each of your images, buttons or texts with <ScrollableArrowItem></ScrollableArrowItem> inside the <ScrollableArrow></ScrollableArrow> container. Items can be multiple. You can use the loop {#each}{/each} block and it may be wise to assign a key for each item.

<script>
	import { ScrollableArrow, ScrollableArrowItem } from 'svelte-scrollable-arrow';
</script>

<ScrollableArrow>
	<ScrollableArrowItem>
		<div>
			<!-- item -->
		</div>
	</ScrollableArrowItem>
	<ScrollableArrowItem>
		<div>
			<!-- item -->
		</div>
	</ScrollableArrowItem>
	<ScrollableArrowItem>
		<div>
			<!-- item -->
		</div>
	</ScrollableArrowItem>
	<ScrollableArrowItem>
		<div>
			<!-- item -->
		</div>
	</ScrollableArrowItem>
</ScrollableArrow>

Props for Container (ScrollableArrow)

| Prop | Type | Default | Description | | ------------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------- | ------------------------------------------------------------------------------------------------------------------------------------- | | justifyContent | "start"⎮"end"⎮"flex-start"⎮"flex-end"⎮"center"⎮"left"⎮"right"⎮"normal"⎮"space-between"⎮"space-around"⎮"space-evenly"⎮"stretch | "start" | Basically the same as justify-content. Sets how the items are aligned horizontally. | | alignItems | "normal"⎮ "flex-start"⎮"flex-end"⎮"center"⎮"start"⎮"end"⎮"self-start"⎮"self-end"⎮"baseline"⎮"first baseline"⎮"last baseline"⎮"stretch"⎮"safe"⎮"unsafe" | "center" | Basically same as align-items. Sets how the items are aligned vertically. | | arrowShadow | boolean | true | Enables the shadow behind each arrow. If disabled, ShadowColor has no effect. | | arrowShadowColor | string | "rgba(0,0,0,0.7)" | Only accepts a RGBA color for the shadow behind each arrow. | | arrow | boolean | true | Show the arrow on and off | | arrowColor | string | "#ffffff" | Hex Color for the arrow | | arrowSize | number | 18 | Size of each arrow (px) | | arrowPosition | "top" ⎮ "center" ⎮ "bottom" ⎮ "outside-top-left" ⎮ "outside-top-right" ⎮ "outside-top-center" ⎮ "outside-top-space-between" | "center" | The position for each arrow. | | threshold | number | 0 | The number of the scroll value required to move through container. If left unset, the default is set to 1/3 of the container's width. | | showArrowByDefault | boolean | true | Shows the right arrow button on load, and it remains if the container has overflowing contents, and gets removed if it doesn't. | | id | string | "" | ID for container. | | class | string | "" | Container classes | | style | string | "" | Container styles |

Props for Item (ScrollableArrow)

| Prop | Type | Default | Description | | ----- | -------- | ------- | ---------------- | | id | string | "" | ID for the item. | | class | string | "" | Item classes | | style | string | "" | Item styles |

Event for Container (ScrollableArrow)

| Prop | Type | Description | | -------------- | ------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | load | CustomEvent | Fires when the component is mounted. | | scroll | CustomEvent | Fires when the scroll event in the container is fired. This also fires when a user scrolls through the container without clicking the arrow. (Keyboard arrows, touch gestures, and mouse wheels.) | | scrollStart | CustomEvent | Fires once when the scroll event is fired. This is different from scroll as scroll fires on scroll. | | scrollEnd | CustomEvent | Fires 30ms after the scroll event ends. | | reachedEnd | CustomEvent | Fires when the scroller reached at the end. | | reachedNearEnd | CustomEvent | Fires when there's only one arrow left to go. | | mouseenter | CustomEvent | Fires when the mouse enters the container | | mouseleave | CustomEvent | Fires when the mouse leaves the container | | dragStart | CustomEvent | Fires when touchEvent and dragEvent are triggered. | | dragEnd | CustomEvent | Fires when touchEvent and dragEvent ended. | | next | CustomEvent | Fires when the next arrow is fired. (Can be triggered with a keyboard arrow →.) | | prev | CustomEvent | Fires when the prev arrow is fired. (Can be triggered with a keyboard arrow ←.) | | nav | CustomEvent | Fires when either arrow is fired. (Can be triggered with keyboard arrows ←/→.) |

Event for Item (ScrollableArrowItem)

The event in ScrollableArrowItem is limited to two events visible and invisible. It doesn't handle any other event. You may consider adding the event to your item container, not this component.

| Prop | Type | Description | | --------- | ------------- | ---------------------------------- | | visible | CustomEvent | Fires when the item is visible | | invisible | CustomEvent | Fires when the item is not visible |

Note about the showArrowByDefault option.

This option is enabled by default. If you see the right arrow button showing up and disappearing immediately after, it means there are not enough scrollable contents. As it relies on the onMount lifecycle, this flickering is inevitable. You can disable it (not completely, but only when there are not enough contents to scroll) with this option. The recommended way is to make it true for smaller window sizes such as mobile, or tablets, and false for the wider views such as desktop.

Limitations & Things to do

1. The component does not support custom arrow images, even though you can change the color & size.
2. You should wrap each item by <ScrollableArrowItem/> to make it work and be able to use the API of the component.
3. The layout may break if the items in the content don't have a fixed size (either width or height)
4. On Firefox, the Smooth Scrolling option may be turned off if you see the scrolling instantly move to another position. This can be fixed in about:preferences. On the Browsers tab, enable Smooth Scrolling.
5. We advise to refrain from using window.location.href or goto as this may be triggered while a user drags the scrollview container.

Version Change LOG

[1.1.0] Moved to 1.1.0 as there was a new drag event added for desktop. [1.2.0] Added new events dragEnd, dragStart, reachNearEnd, load. Removed the scrollbar on Safari, Firefox, iPhone Safari, and Edge. [1.2.4] Ghosting issue has been resolved. Images, and links do not create ghosting anymore. See more details in CHANGELOG.md. New options for arrowPositions are added. [1.2.8] Change the bug where the link inside the item doesn't get triggered. [1.3.2] Improvement to drag event

The new outside-top-right arrowPosition option on v1.2.4 preview. (It comes with 4 new styles.) 👇

License

LIL License.

https://yongju.me