4👍
✅
You can achieve this using afterBody
callback function of tooltips …
options: {
tooltips: {
callbacks: {
afterBody: function(t, d) {
return 'loss 15%'; // return a string that you wish to append
}
}
},
...
}
Here is a working example …
var ctx = document.getElementById("myChart").getContext('2d');
var myChart = new Chart(ctx, {
type: 'line',
data: {
labels: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun'],
datasets: [{
label: 'Standard Rating',
data: [1, 2, 3, 4, 5, 6],
backgroundColor: 'rgba(209, 230, 245, 0.5)',
borderColor: 'rgba(56, 163, 236, 1)',
borderWidth: 1
}]
},
options: {
responsive: false,
tooltips: {
callbacks: {
afterBody: function(t, d) {
return 'loss 15%'; //return a string that you wish to append
}
}
},
scales: {
yAxes: [{
ticks: {
beginAtZero: true
}
}]
}
}
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.5.0/Chart.min.js"></script>
<canvas id="myChart" width="350" height="200"></canvas>
0👍
Adding onto this in case anyone missed the comment, if you want to return a string and a variable use return "string" + varName
Source:stackexchange.com