我的chartsjs标签有问题。我的图表生成良好,我正在尝试设置图表,以便数据标签用于数据的文本部分,而不是数字部分。我的代码将数据标签显示为4、6和2,因为我需要它们来显示文本:我、你和他们。
<script>
var ctx = document.getElementById('myChart4').getContext('2d');
var myChart4 = new Chart(ctx, {
plugins: [ChartDataLabels],
type: 'doughnut',
data: {
labels: ['me','you','them'
],
datasets: [{
label: false,
data: [4,6,2
],
}]
},
options: {
responsive: false,
plugins: {
datalabels: {
color: 'black',
anchor: 'end',
align: 'end',
offset: 15
},
legend: {
display: false
},
title: {
display: true,
text:'Reason'
}
},
responsive: false,
onClick: (evt, activeEls) => {
show();
},
}
});
您可以为此使用formatter
函数:
Chart.register(ChartDataLabels)
const options = {
type: 'bar',
data: {
labels: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"],
datasets: [{
label: '# of Votes',
data: [12, 19, 3, 5, 2, 3],
backgroundColor: 'orange'
}]
},
options: {
plugins: {
datalabels: {
color: 'black',
anchor: 'end',
align: 'end',
offset: 15,
formatter: (val, ctx) => (ctx.chart.data.labels[ctx.dataIndex])
},
}
}
}
const 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/3.6.0/chart.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/chartjs-plugin-datalabels/2.0.0/chartjs-plugin-datalabels.js"></script>
</body>