What is D3.js?
Explore what D3.js is and how it enables creating interactive data visuals by connecting data to graphical elements within web standards. Understand its role as an open, browser-compatible JavaScript library that enhances data accessibility through dynamic and customizable visualizations.
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What is D3.js?
Introduction
D3.js (hereafter abridged as D3) is “a JavaScript library for manipulating documents based on data.”
But that description doesn’t do it justice. D3 is all about helping us take information and make it more accessible to others via a web browser.
The benefits of D3
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It’s a JavaScript library. That means that it’s a software tool that can be used in conjunction with other software tools to achieve a task.
- Those other tools are based on web standards, such as HTML, SVG, and CSS. But we don’t need to know too much about them to start using D3 (although it will help).
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It’s an open framework. This means that there are no hidden mysteries about how it does its magic, and it allows others to contribute to a constant cycle of improvement.
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Being built to leverage web standards means that modern browsers don’t have to do anything special to use D3; they just have to support the framework that the Internet has adopted for ease of use.
The D3 magic
The beauty of D3 is that it allows us to associate data and whatever appears on the screen in a way that directly links the two. Change the data and we change the object on the screen. D3’s trick is letting us set what appears on the screen: a circle, a line, a point on a map, a graph, a bouncing ball, and a gradient (and way, way more). Once the data and the object are linked, the possibilities are endless.
D3 bridges the gap between the static display of data and the desire of people to represent it dynamically.
That applies equally to the developer who wants to show something cool and to the end-user who wants to be able to explore information interactively.
It was (and still is being) developed by Mike Bostock who has not just spent time writing the code but also writing the documentation for D3. There is an extensive community of supporters who also contribute to the code, provide technical support online, and generally have fun creating amazing visualizations. Their contributions are extraordinary.