I need the value of chart show after name of data for example ([colour of data] Car 50, [colour of data] Motorcycle 200). I’ve tried change the value of legend title but it doesn’t work at all
Here is it my code:
var ctx = document.getElementById('top-five').getContext('2d');
var myChartpie = new Chart(ctx, {
type: 'pie',
data: {
labels: {!! $top->pluck('name') !!},
datasets: [{
label: 'Statistics',
data: {!! $top->pluck('m_count') !!},
backgroundColor: {!! $top->pluck('colour') !!},
borderColor: {!! $top->pluck('colour') !!},
}]
},
options: {
plugins: {
legend: {
display: true,
title: {
text: function(context) {//I've tried to override this but doesn't work
var value = context.dataset.data[context.dataIndex];
var label = context.label[context.dataIndex];
return label + ' ' + value;
},
}
},
},
responsive: true,
}
});
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Answer
You can use a custom generateLabels function for this:
var options = {
type: 'doughnut',
data: {
labels: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"],
datasets: [{
label: '# of Votes',
data: [12, 19, 3, 5, 2, 3],
backgroundColor: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"],
}]
},
options: {
plugins: {
legend: {
labels: {
generateLabels: (chart) => {
const datasets = chart.data.datasets;
return datasets[0].data.map((data, i) => ({
text: `${chart.data.labels[i]} ${data}`,
fillStyle: datasets[0].backgroundColor[i],
index: i
}))
}
}
}
}
}
}
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>