Lazy Load List

# Stand With Palestine 🇵🇸

Lazy Load List is a lightweight web package that loads items in lazy way to achieve high performance and better UX in large lists.

Rendering large lists makes the first load slow especially if items contain images, so this package split the list to small lists then it renders them one by one when scrolling to the end of the list..

you can notice the deference here:

Features

• Fast Loading 🚀
• Lightweight package
• Better user experience
• Supports most loved JS frameworks
• Supports SSR & SSG

Demo

• Simple example in Svelte js
• Simple example in Vue js
• Simple example in React js

you can find the source code of examples in examples folder

Lazy Load List 1.2 is here 🎉

what's new?

• support React js
• auto loading items when container can contain more
• better performance
• explain using custom loading element

Supported Frameworks

|  | Svete js     | ✅
|  | Vue js (2,3) | ✅
|  | React js     | ✅

Installation

install the package using npm or yarn:

install using npm

$ npm i lazy-load-list

or using yarn

$ yarn add lazy-load-list

Usage

⚠ you must wrap the list by div and specify the height and width in the wrapper div.

• svelte js:

import LazyList from 'lazy-load-list/svelte'

<div  class="container">
	<LazyList
		data={colors}
		itemsPerRender={15}
		containerClasses="list"
		defaultLoadingColor="#222"
		let:item={item}
	>
		<h1>{ item }</h1>
	</LazyList>
</div>

• vue js:

<div class="container">
	<LazyList
		:data="items"
		:itemsPerRender="15"
		containerClasses="list"
		defaultLoadingColor="#222"
	>
		<template v-slot="{item}">
		    <h1>{{ item }}</h1>
		</template>
	</LazyList>
</div>

// script
import LazyList from 'lazy-load-list/vue'
..
components: { LazyList } // don't forget to define it in the components

• react js:

import  LazyList  from  'lazy-load-list/react'

const renderItem = ({item, index}) => (
	<h1 key={index}>{ item }</h1>
)

<div className="container">
	<LazyList
		data={colors}
		itemsPerRender={15}
		containerClasses="list"
		defaultLoadingColor="#222"
		renderItem={renderItem}
	/>
</div>

Props

prop	supported framework	description	required	type	default value
data	all	the item array	yes	array	[]
itemsPerRender	all	items to be rendered per load	yes	number	3
containerClasses	all	list container classes for CSS	no	string	''
defaultLoading	all	to show the default loading or not	no	bool	true
defaultLoadingColor	all	color of the default loading	no	string	'#18191A'
renderItem	React js	element to be render for each item	yes	React component	() => null
loadingComponent	React js	custom loading component	no	React component	() => null

Using custom loading element

you can specify the loading element color using (defaultLoadingColor) prop.. but if you don't like the default loading element, you can use custom one:

• in svelte js & vue js (just use slot name "loading like this):

<img slot="loading" src="loading.svg" width="16" alt="loading"/>

• react js (use loadingComponent props to pass the element):

	..
		loadingComponent={loadingElementHere}
	/>