34๐
As potatopeelings has mentioned in the comments, you have to set a callback for the tooltip.
Here is an example:
options: {
tooltips: {
callbacks: {
label: function(tooltipItem, data) {
var datasetLabel = data.datasets[tooltipItem.datasetIndex].label || 'Other';
var label = data.labels[tooltipItem.index];
return datasetLabel + ': ' + label;
}
}
}
}
live demo
var ctx = document.getElementById("myChart");
var myChart = new Chart(ctx, {
type: 'doughnut',
data: {
labels: ["Men", "Women", "Unknown"],
datasets: [{
label: 'Sweden',
data: [60, 40, 20],
backgroundColor: ['rgba(158, 216, 202, 0.75)', 'rgba(255, 150, 162, 0.75)', 'rgba(160, 160, 160, 0.75)']
}, {
label: 'Netherlands',
data: [40, 70, 10],
backgroundColor: ['rgba(158, 216, 202, 0.5)', 'rgba(255, 150, 162, 0.5)', 'rgba(160, 160, 160, 0.5)']
}, {
data: [33, 33, 34],
backgroundColor: ['rgba(158, 216, 202, 0.25)', 'rgba(255, 150, 162, 0.25)', 'rgba(160, 160, 160, 0.25)']
}]
},
options: {
tooltips: {
callbacks: {
label: function(tooltipItem, data) {
var datasetLabel = data.datasets[tooltipItem.datasetIndex].label || 'Other';
var label = data.labels[tooltipItem.index];
return datasetLabel + ': ' + label;
}
}
}
}
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.1.2/Chart.min.js"></script>
<canvas id="myChart" width="400" height="200"></canvas>
14๐
The Chart.js 1.x tooltipsTemplate is equivalent to options.tooltips.callbacks.title
in Chart.js 2.x:
var ctx = document.getElementById("myChart");
var myChart = new Chart(ctx, {
type: 'doughnut',
data: {
labels: [
"Men",
"Women",
"Unknown"
],
datasets: [{
label: 'Sweden',
data: [60, 40, 20],
backgroundColor: [
'rgba(158, 216, 202, 0.75)',
'rgba(255, 150, 162, 0.75)',
'rgba(160, 160, 160, 0.75)'
]
}, {
label: 'Netherlands',
data: [40, 70, 10],
backgroundColor: [
'rgba(158, 216, 202, 0.5)',
'rgba(255, 150, 162, 0.5)',
'rgba(160, 160, 160, 0.5)'
]
}, {
data: [33, 33, 34],
backgroundColor: [
'rgba(158, 216, 202, 0.25)',
'rgba(255, 150, 162, 0.25)',
'rgba(160, 160, 160, 0.25)'
]
}]
},
options: {
tooltips: {
callbacks: {
label: function(tooltipItem, data) {
return 'This value ' + tooltipItem.yLabel;
},
title: function(tooltipItem, data) {
return 'The tooltip title ' + tooltipItem[0].xLabel;
}
}
}
}
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.1.2/Chart.min.js"></script>
<canvas id="myChart" width="400" height="200"></canvas>
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0๐
You have to set options
for tooltip mode
to label
for showing multiple tooltip
options: {
tooltips: {
mode : 'label'
}
}
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0๐
if you want to hide the label you can simply try this
options =
{
tooltips :{
titleFontSize : 0,
titleMarginBottom:-0.5
}
}
tooltip reference https://www.chartjs.org/docs/latest/configuration/tooltip.html
Source:stackexchange.com