- Chart.js Tutorial
- Chart.js - Home
- Chart.js - Introduction
- Chart.js - Installation
- Chart.js - Syntax
- Chart.js - Basics
- Chart.js - Color
- Chart.js - Options
- Chart.js - Interactions
- Chart.js - Legend
- Chart.js - Title
- Chart.js - Animation
- Chart.js - Tooltip
- Chart.js - Line Chart
- Chart.js - Bar Chart
- Chart.js - Radar Chart
- Chart.js - Doughnut Chart
- Chart.js - Pie Chart
- Chart.js - Polar Area Chart
- Chart.js - Bubble Chart
- Chart.js - Scatter Chart
- Chart.js - Mixed Chart
- Chart.js - Cartesian Axis
- Chart.js - Category Axis
- Chart.js - Radial Axis
- Chart.js Useful Resources
- Chart.js - Quick Guide
- Chart.js - Useful Resources
- Chart.js - Discussion
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/libs/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: "online tutorial subjects", data: [20, 40, 30, 35, 30, 20], backgroundColor: ['yellow', 'aqua', 'pink', 'lightgreen', 'lightblue', '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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