lazy.js - Like Underscore, but lazier

•    Javascript

Like Underscore, but lazier

react-resolver - Async rendering & data-fetching for universal React applications.

•    Javascript

Async-rendering & data-fetching for universal React applications.React Resolver lets you define data requirements per-component and will handle the nested, async rendering on both the server & client for you.

streamjs - Lazy Object Streaming Pipeline for JavaScript

•    Javascript

Stream.js is a lightweight (2.6 KB minified, gzipped), intensely tested (700+ assertions, 97% coverage) functional programming library for operating upon collections of in-memory data. It requires EcmaScript 5+, has built-in support for ES6 features and works in all current browsers, Node.js and Java 8 Nashorn. Before explaining how Stream.js works in detail, here's a few real world code samples.

lozad

•    Javascript

It is written with an aim to lazy load images, iframes, ads, videos or any other element using the recently added Intersection Observer API with tremendous performance benefits. Existing lazy loading libraries hook up to the scroll event or use a periodic timer and call getBoundingClientRect() on elements that need to be lazy loaded. This approach, however, is painfully slow as each call to getBoundingClientRect() forces the browser to re-layout the entire page and will introduce considerable jank to your website.

lazysizes - High performance and SEO friendly lazy loader for images (responsive and normal), iframes and more, that detects any visibility changes triggered through user interaction, CSS or JavaScript without configuration

•    Javascript

lazysizes is a fast (jank-free), SEO-friendly and self-initializing lazyloader for images (including responsive images picture/srcset), iframes, scripts/widgets and much more. It also prioritizes resources by differentiating between crucial in view and near view elements to make perceived performance even faster. It may become also your number one tool to integrate responsive images. It can automatically calculate the sizes attribute for your responsive images, it allows you to share media queries for your media attributes with your CSS, helping to separate layout (CSS) from content/structure (HTML) and it makes integrating responsive images into any environment really simple. It also includes a set of optional plugins to further extend its functionality.

fancytree - JavaScript tree view / tree grid plugin with support for keyboard, inline editing, filtering, checkboxes, drag'n'drop, and lazy loading

•    Javascript

Fancytree (sequel of DynaTree 1.x) is a JavaScript tree view / tree grid plugin with support for keyboard, inline editing, filtering, checkboxes, drag'n'drop, and lazy loading. See the change log for details.

lqip-loader - Low Quality Image Placeholders (LQIP) for Webpack

•    Javascript

PS: The large image file will be emitted & only 400byte of Base64 (if set to true in the loader options) will be bundled. To save memory and improve GPU performance, browsers (including Chrome started from 61.0.3163.38) will now render a slightly more crisp or pixelated Base64 encoded images.

Immutable-js - Immutable persistent data collections for Javascript which increase efficiency and simplicity

•    Javascript

Immutable data cannot be changed once created, leading to much simpler application development, no defensive copying, and enabling advanced memoization and change detection techniques with simple logic. Persistent data presents a mutative API which does not update the data in-place, but instead always yields new updated data.

blazy - Hey, be lazy! bLazy

•    Javascript

bLazy is a lightweight script for lazy loading and multi-serving images, iframes, videos and more (less than 1.4KB minified and gzipped). It’s written in pure JavaScript why it doesn’t depend on 3rd-party libraries such as jQuery. It lets you lazy load and multi-serve your images so you can save bandwidth and server requests. The user will have faster load times and save data usage if he/she doesn't browse the whole page. If you don't want to host the script yourself you can link to the latest minified file: //cdn.jsdelivr.net/blazy/latest/blazy.min.js on jsDelivr. Exchange latest with the specific version number if you want to lock it in.

layzr.js - A modern lazy loading library for images.

•    Javascript

A modern lazy loading library for images. Layzr was developed with a modern JavaScript workflow in mind. To use it, it's recommended you have a build system in place that can transpile ES6, and bundle modules. For a minimal boilerplate that fulfills those requirements, check out outset.

Immutable.js - Immutable collections for JavaScript

•    Javascript

Immutable data cannot be changed once created, leading to much simpler application development, no defensive copying, and enabling advanced memoization and change detection techniques with simple logic. Persistent data presents a mutative API which does not update the data in-place, but instead always yields new updated data. Immutable.js provides many Persistent Immutable data structures including: List, Stack, Map, OrderedMap, Set, OrderedSet and Record.

lazy-line-painter - A JQUERY PLUGIN FOR SVG PATH ANIMATION ~

•    JQuery

A JQUERY PLUGIN FOR SVG PATH ANIMATION ~

stream.js - A tiny stand-alone Javascript library for streams

•    Javascript

stream.js is a tiny Javascript library that unlocks a new data structure for you: streams. Go to https://dionyziz.github.io/stream.js-website/ to read all about what streams are and how they can make your code better and your soul happier.

cloe - Cloe programming language

•    Go

Cloe is the timeless functional programming language. It aims to be simple and practical. Go 1.8+ is required.

LazyCache - An easy to use thread safe generics based in memory caching service with a simple developer friendly API for c#

•    CSharp

Lazy cache is a simple in-memory caching service. It has a developer friendly generics based API, and provides a thread safe cache implementation that guarantees to only execute your cachable delegates once (it's lazy!). Under the hood it leverages Microsoft.Extensions.Caching and Lazy to provide performance and reliability in heavy load scenarios. As you can see the magic happens in the GetOrAdd() method which gives the consumer an atomic and tidy way to add caching to your code. It leverages a factory delegate Func and generics to make it easy to add cached method calls to your app.

Lenic.DI

Lenic.DI -- Another IOC Container Library Using Delegate

lazy-load-xt - Lazy load XT is a jQuery plugin for images, videos and other media

•    JQuery

Lazy load XT is a jQuery plugin for images, videos and other media

coloor - Image preloading utility

•    Javascript

Coloor is a HTML preprocessor that decorates your <img> tags with data-coloor attributes containing a small base64 encoded version of your image. The idea is to quickly show the small image as a placeholder while the original one is loading.

Nspl - Non-standard PHP library - functional primitives toolbox and more

•    PHP

You can see more examples in the library reference below or here. This is documentation for the dev version 1.3.*-dev which contains the latest changes. For the version 1.2 (last stable version) documentation click here.

lazypipe - Lazily create a pipeline out of reusable components. Useful for gulp.

•    Javascript

Lazypipe allows you to create an immutable, lazily-initialized pipeline. It's designed to be used in an environment where you want to reuse partial pipelines, such as with gulp. This module returns a function that can be used to start building a lazypipe. Individual steps are added via the .pipe() method. At any point, a new lazypipe can be built by adding to an existing one, without affecting the previous lazypipe. Lazypipes can even be used as steps within another lazypipe.