0👍
✅
You can use the tooltip callback for this:
tooltips: {
callbacks: {
label: (ctx, data) => (`Some text: ${data.datasets[ctx.datasetIndex].data[ctx.index]}`)
}
},
Live sample:
const data = {
//labels: ['xyz', 'abc'],
datasets: [{
label: 'Weekly Sales',
data: [12, 20],
backgroundColor: [
'rgb(254, 214, 10)',
'rgb(255, 90, 48)'
],
borderColor: [
"#ffffff",
],
borderWidth: 1
}]
};
var sum = 0;
var i;
for (i = 0; i < data.datasets[0].data.length; ++i) {
sum += data.datasets[0].data[i];
}
console.log("sume", sum);
for (i = 0; i < data.datasets[0].data.length; ++i) {
data.datasets[0].data[i] = Math.round((data.datasets[0].data[i] / sum) * 100);
}
// config
const config = {
type: 'doughnut',
data,
options: {
tooltips: {
callbacks: {
label: (ctx, data) => (`Some text: ${data.datasets[ctx.datasetIndex].data[ctx.index]}`)
}
},
plugins: {
datalabels: {
formatter: (value, ctx) => {
let datasets = ctx.chart.data.datasets;
if (datasets.indexOf(ctx.dataset) === datasets.length - 1) {
//var sum = datasets[0].data.reduce((a, b) => a + b, 0);
var percentage = Math.round((value / sum) * 100) + "%";
return percentage;
} else {
return percentage;
}
},
color: '#fff',
}
}
}
};
// render init block
const myChart = new Chart(
document.getElementById('myChart'),
config
);
$(document).ready(function() {
$("#count1").text(data.datasets[0].data[0] + "%");
$("#count2").text(data.datasets[0].data[1] + "%")
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.6.0/jquery.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/chart.js@2.9.4"></script>
<!-- <script src="https://cdn.jsdelivr.net/npm/chartjs-plugin-datalabels@0.7.0"></script> -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/chartjs-plugin-datalabels/2.0.0/chartjs-plugin-datalabels.min.js"></script>
<canvas id="myChart"></canvas>
<div class="block-text">
<div class="flex-chart">
<div class="box-file"></div>
<p class="spacing">abc</p>
<p id="count1">20%</p>
</div>
<div class="flex-chart">
<div class="box-url"></div>
<p class="spacing">xyz</p>
<p id="count2">30%</p>
</div>
</div>
0👍
You are using Chart.js
version 2.9.4
but the synytax is of version 3.x
. If you the latest Chart.js
version (3.8.2
as of right now), code works just fine.
Here’s your example: https://jsfiddle.net/zkx5acuv/5/
Source:stackexchange.com