Chart.js Tutorial
Selected Reading
- Chart.js - Discussion
- Chart.js - Useful Resources
- Chart.js - Quick Guide
- Chart.js - Radial Axis
- Chart.js - Category Axis
- Chart.js - Cartesian Axis
- Chart.js - Mixed Chart
- Chart.js - Scatter Chart
- Chart.js - Bubble Chart
- Chart.js - Polar Area Chart
- Chart.js - Pie Chart
- Chart.js - Doughnut Chart
- Chart.js - Radar Chart
- Chart.js - Bar Chart
- Chart.js - Line Chart
- Chart.js - Tooltip
- Chart.js - Animation
- Chart.js - Title
- Chart.js - Legend
- Chart.js - Interactions
- Chart.js - Options
- Chart.js - Color
- Chart.js - Basics
- Chart.js - Syntax
- Chart.js - Installation
- Chart.js - Introduction
- Chart.js - Home
Selected Reading
- Who is Who
- Computer Glossary
- HR Interview Questions
- Effective Resume Writing
- Questions and Answers
- UPSC IAS Exams Notes
Chart.js - Options
Chart.js - Options
In Chart.js, using a context dependent route, the Options are resolved from top of the code to the bottom of it. We have different levels of options as shown below −
Chart Level Options
We have three chart level options −
options
overrides
defaults
Dataset Level Options
Chart.js provides us below options to be used at dataset level −
dataset
options.datasets
options
overrides
defaults.datasets
defaults
Dataset Animation Options
Chart.js provides us below options to be used at dataset animation level −
Dataset.animation
options.datasets.animation
options.animation
overrides.datasets.animation
defaults.datasets.animation
defaults.animation
Dataset Element Level Options
Chart.js provides us below options to be used at dataset element level −
Dataset
options.datasets
options.datasets.elements
options.elements
options
overrides.datasets
overrides.datasets.elements
defaults.datasets
defaults.datasets.elements
defaults.elements
defaults
Scale Options
Chart.js provides us below scale options −
options.scale
overrides.scales
overrides.datasets.elements
defaults.scales
defaults.scale
Plugin Options
Chart.js provides us below plugin options that provides array of paths to additionally look for its options in −
options.scale
options.plugins[plugin.id]
(options.[...plugin.additionalOptionScopes])
overrides[config.type].plugins[plugin.id]
defaults.plugins[plugin.id]
(defaults.[...plugin.additionalOptionScopes])
Example
Let’s take an example in which we will use various Options in our chart −
<!DOCTYPE>
<html>
<head>
<meta charset- "UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<title>chart.js</title>
</head>
<body>
<canvas id="chartId" aria-label="chart" height="350" width="580"></canvas>
<script src="https://cdnjs.cloudflare.com/ajax/pbs/Chart.js/3.1.1/chart.min.js"></script>
<script>
var chrt = document.getElementById("chartId").getContext("2d");
var chartId = new Chart(chrt, {
type: bar ,
data: {
labels: ["HTML", "CSS", "JAVASCRIPT", "CHART.JS", "JQUERY", "BOOTSTRP"],
datasets: [{
label: "onpne tutorial subjects",
data: [20, 40, 30, 35, 30, 20],
backgroundColor: [ yellow , aqua , pink , pghtgreen , pghtblue , gold ],
borderColor: [ red , blue , fuchsia , green , navy , black ],
borderWidth: 2,
}],
},
options: {
responsive: false,
layout: {
padding: {
left: 40,
right: 40,
}
},
plugins: {
legend: {
labels: {
font: {
size: 25,
family: Helvetica ,
style: bold ,
}
}
}
}
},
});
</script>
</body>
</html>
Output
The following output chart shows padding of the element and font style −
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