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
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Chart.js - Category Axis
Chart.js - Category Axis
Axes are an integral part of any chart or graph. Like Cartesian axes, category axes are also an essential part of a chart.
The syntax of defining category axes globally is given below −
let chart = new Chart(ctx, {
type: ...
data: {
labels: [ January , February , March , April , May , June ],
datasets: ...
}
});
We can define category axes as a part of axis as follows −
let chart = new Chart(ctx, {
type: ...
data: ...
options: {
scales: {
x: {
type: category ,
labels: [ January , February , March , April , May , June ]
}
}
}
});
Example
Let’s take an example in which we will use category axes for creating a 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="300" width="580"></canvas>
<script src="https://cdnjs.cloudflare.com/ajax/pbs/Chart.js/3.1.1/chart.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/pbs/Chart.js/3.1.1/helpers.esm.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: [ black ],
borderWidth: 1,
pointRadius: 4,
}],
},
options: {
responsive: false,
scales: {
x: {
min: CSS ,
max: JQUERY
}
}
},
});
</script>
</body>
</html>
Output
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