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Learn Chart.js

You're reading from   Learn Chart.js Create interactive visualizations for the Web with Chart.js 2

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Product type Paperback
Published in Feb 2019
Publisher
ISBN-13 9781789342482
Length 284 pages
Edition 1st Edition
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Author (1):
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Helder da Rocha Helder da Rocha
Author Profile Icon Helder da Rocha
Helder da Rocha
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Table of Contents (9) Chapters Close

Preface 1. Introduction 2. Technology Fundamentals FREE CHAPTER 3. Chart.js - Quick Start 4. Creating Charts 5. Scales and Grid Configuration 6. Configuring Styles and Interactivity 7. Advanced Chart.js 8. Other Books You May Enjoy

Options configuration


Defaults are configured per chart with an options configuration object included in the chart object (the second parameter of the constructor), as demonstrated in the following block of code:

new Chart("ocean-volume-bar-chart",
        {
            type: "bar",
            data: dataObj,
            options: {} // configure options here
        });

There are many defaults that you can change. You might, for example, wish to have more control over the size of your chart, which resizes automatically. That happens because charts are responsive by default. You can turn responsiveness off by overriding the responsive property, which has a default true value, as follows:

options: {
    responsive: false
}

Now, your chart no longer resizes automatically. However, what if you do want to undertake resizing, but don't care about the aspect ratio? Then, you can override the maintainAspectRatio property, as follows:

options: {
    maintainAspectRatio: false
}

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