February 2019
Beginner to intermediate
284 pages
6h 20m
English
Content preview from Learn Chart.js
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Setting up the graphics context
Charts are displayed inside the graphics context provided by an HTML Canvas object. There are many ways to create one; the simplest way is to use plain HTML. Place a <canvas> element somewhere inside <body>. It should have an ID attribute, as follows:
<canvas id="my-bar-chart" width="200" height="200"></canvas>
Chart.js graphics are responsive by default. The chart will fit in the available space: the height and width attributes won't affect the actual size of the chart (unless you change the defaults).
You can obtain a JavaScript handle to the canvas object using DOM (or JQuery) in any script block or file loaded by your HTML file, as shown in the following code snippet (the script block will be ignored in ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.