删除标签并仅在条形图的工具提示中显示值 [英] Remove the label and show only value in tooltips of a bar chart
本文介绍了删除标签并仅在条形图的工具提示中显示值的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我正在使用
我要做的就是删除条形图工具提示中显示的标签.
var ctx = document.getElementById("myChart");var myChart = new Chart(ctx, {类型:'酒吧',数据: {标签: [男人",女性",未知"],数据集:[{标签:男人",数据:[60、40、20],背景颜色: ['rgba(158, 216, 202, 0.75)','rgba(255, 150, 162, 0.75)','rgba(160, 160, 160, 0.75)']},{标签:女性",数据:[40,70,10],背景颜色: ['rgba(158, 216, 202, 0.5)','rgba(255, 150, 162, 0.5)','rgba(160, 160, 160, 0.5)']},{标签:'未知',数据:[33,33,34],背景颜色: ['rgba(158, 216, 202, 0.25)','rgba(255, 150, 162, 0.25)','rgba(160, 160, 160, 0.25)']}]},选项: {工具提示:{回调:{标签:功能(工具提示项,数据){var datasetLabel = '';var label = data.labels[tooltipItem.index];返回 data.datasets[tooltipItem.datasetIndex].data[tooltipItem.index];}}}}});
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.3.0/Chart.bundle.min.js"></script><canvas id="myChart" width="400" height="200"></canvas>
解决方案
只需使用带有空值的 title
选项.像这样:
回调:{标题:功能(工具提示项,数据){返回 '';},标签:功能(工具提示项,数据){var datasetLabel = '';var label = data.labels[tooltipItem.index];返回 data.datasets[tooltipItem.datasetIndex].data[tooltipItem.index];}}
查看 更新的 jsfiddle
I am using ChartJS library to create charts. In the tooltip, I am showing the data value from the dataset I created. It works in case if the chart type is doughnut. Otherwise it doesn't work in case or bar or horizontalbar charts.
Whatever I do it shows the data with the labels.
Working JSFiddle of Doughnut Chart with data in tooltip.
Working JSFiddle of Bar Chart with label + data in tooltip.
All I want to do is to remove the label shown in the tooltips of the bar chart.
var ctx = document.getElementById("myChart");
var myChart = new Chart(ctx, {
type: 'bar',
data: {
labels: [
"Men",
"Women",
"Unknown"
],
datasets: [{
label: 'Men',
data: [60, 40, 20],
backgroundColor: [
'rgba(158, 216, 202, 0.75)',
'rgba(255, 150, 162, 0.75)',
'rgba(160, 160, 160, 0.75)'
]
},
{
label: 'Women',
data: [40, 70, 10],
backgroundColor: [
'rgba(158, 216, 202, 0.5)',
'rgba(255, 150, 162, 0.5)',
'rgba(160, 160, 160, 0.5)'
]
},
{
label: 'Unknown',
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 = '';
var label = data.labels[tooltipItem.index];
return data.datasets[tooltipItem.datasetIndex].data[tooltipItem.index];
}
}
}
}
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.3.0/Chart.bundle.min.js"></script>
<canvas id="myChart" width="400" height="200"></canvas>
解决方案
just use the title
option with an empty value. Like this:
callbacks: {
title: function(tooltipItems, data) {
return '';
},
label: function(tooltipItem, data) {
var datasetLabel = '';
var label = data.labels[tooltipItem.index];
return data.datasets[tooltipItem.datasetIndex].data[tooltipItem.index];
}
}
see updated jsfiddle
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