Socket.IO
In most cases, the connection will be established with WebSocket, providing a low-overhead communication channel between the server and the client. Rest assured! In case the WebSocket connection is not possible, it will fall back to HTTP long-polling. And if the connection is lost, the client will automatically try to reconnect. Scale to multiple servers and send events to all connected clients with ease. Socket.IO is a library that enables low-latency, bidirectional and event-based communication between a client and a server. It is built on top of the WebSocket protocol and provides additional guarantees like a fallback to HTTP long-polling or automatic reconnection. WebSocket is a communication protocol that provides a full-duplex and low-latency channel between the server and the browser. There are several Socket.IO server implementations available. And client implementations in most major languages.
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JsPlumb
JsPlumb is a Javascript diagramming library that allows you to rapidly create complex applications featuring visual connectivity without having to build any of the boring stuff: it provides pan/zoom, a minimap widget, automatic layouts, data binding, path finding, and much, much more.
JsPlumb offers deep integration with major frameworks/libraries such as Angular, React, Vue and Svelte. Clients love the incredible flexibility of the Toolkit. As one of our clients said recently: The customization for nodes and groups makes it easy to re-skin jsPlumb to look any way you want. UI/UX designers can let their imagination run wild because jsPlumb visual configuration is quite simple to manage.
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Moment.js
A JavaScript date library for parsing, validating, manipulating, and formatting dates. Moment was designed to work both in the browser and in Node.js. All code should work in both of these environments, and all unit tests are run in both of these environments. Moment.js has been successfully used in millions of projects. As of September 2020, Moment gets over 12 million downloads per week! Moment has evolved somewhat over the years, but it has essentially the same design as it did when it was created in 2011. Moment works well on Internet Explorer 8 and higher. Some libraries are split into modules, plugins, or companion libraries. Some libraries use the ECMAScript Intl API for locales, time zones, or both. Some libraries still provide their own locale and time zone files as Moment and Moment-Timezone do. Because different locales define week of year numbering differently, Moment.js added options to get/set the localized week of the year.
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Lodash
A modern JavaScript utility library delivering modularity, performance, and extras. Lodash is released under the MIT license and supports modern environments. Lodash makes JavaScript easier by taking the hassle out of working with arrays, numbers, objects, strings, etc. Lodash’s modular methods are great for Iterating arrays, objects, and strings, manipulating and testing values, as well as creating composite functions. Lodash is available in a variety of builds and module formats. futil-js is a set of functional utilities designed to complement Lodash. Tested in Chrome 74-75, Firefox 66-67, IE 11, Edge 18, Safari 11-12, and Node.js 8-12. Determine the lowest index at which value should be inserted into an array in order to maintain its sort order. Methods that operate on and return arrays, collections, and functions can be chained together. Methods that retrieve a single value or may return a primitive value will automatically end the chain sequence.
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