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Chart.js line chart, as name implies is a method to plot the data points on a line. In most of the case, line charts are used to show the trend of data or a comparison between data sets.
Following are the namespaces to be used in line chart for dataset properties −
-
data.datasets[index] − It provides options for this dataset only.
-
options.datasets.line − It provides options for all the line datasets.
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options.elements.line − It provides options for all the line elements.
-
options.elements.point − It provides options for all the point elements.
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Options − It provides options for the whole chart
We need to use “type: line” for creating the line chart.
Example
Let’s take an example with the help of which we will create a line 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" heigth="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: ''line'',
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: [''black''],
borderWidth: 2,
pointRadius: 5,
}],
},
options: {
responsive: false,
},
});
</script>
</body>
</html>
Output
The following output shows the creation of a line chart −
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