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The click event does get next to the event also a list of all the active elements and the chart, so you can use the list of active elements to get your datapoint or you can use the getElementsAtEventForMode
:
var options = {
type: 'pie',
data: {
labels: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"],
datasets: [{
label: '# of Votes',
data: [12, 19, 3, 5, 2, 3],
backgroundColor: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"]
}]
},
options: {
onClick: (evt, el, chart) => {
console.log('Active el list: ', chart.data.datasets[el[0].datasetIndex].label, chart.data.datasets[el[0].datasetIndex].data[el[0].index])
let point = chart.getElementsAtEventForMode(evt, 'point', {
intersect: true
}, true);
console.log('Mode point list: ', chart.data.datasets[point[0].datasetIndex].label, chart.data.datasets[point[0].datasetIndex].data[point[0].index])
}
}
}
var ctx = document.getElementById('chartJSContainer').getContext('2d');
new Chart(ctx, options);
<body>
<canvas id="chartJSContainer" width="600" height="400"></canvas>
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/3.5.1/chart.js"></script>
</body>
- [Chartjs]-Multiple charts in one page – Chartjs
- [Chartjs]-Charts.js – Display data label only for the last value
Source:stackexchange.com