引入Chart.js库:在HTML文件中引入Chart.js库,可以通过CDN链接或者本地文件引入。 创建Canvas元素:在HTML文件中创建一个或多个Canvas元素,用于显示图表。 获取Canvas上下文:使用JavaScript代码获取Canvas元素的上下文,可以通过getContext('2d')方法获取2D上下文。 创建图表对象:使用Chart.js提供的构造函数创建图表对象,传入C...
{ type: 'bar', data: { labels: ['组1', '组2', '组3'], datasets: [{ label: '数据集1', data: [10, 20, 30], backgroundColor: 'rgba(0, 123, 255, 0.5)' }] }, options: { // 图表的配置选项 } });
您的问题可以使用Chart.js解决，但需要生成labels和单个dataset。此外，您还需要通过定义plugins.legend.lab...
此外，您还需要通过定义plugins.legend.labels.generateLabels和plugins.legend.labels.onClick函数来定义您...
I think I have an issue that is linked to this one. I am using chartjs to display data from a sql query. Every time uses change the query input, I create a new chart "var barChart = new Chart(ctx).Bar(data,..." , This works until the chart is scrolled over, when seemingly ...
One instance of any chart and multiple charts of different types (i.e., 1 bar, 1 line) works perfectly. However, trying to display 2 or more charts of the same type results inCanvas is already in use. Chart with ID '0' must be destroyed before the canvas can be reused. The solutio...
height, gradient;这一行，以便它绑定到函数，并且不会被覆盖，这样它就可以正常工作：第一个 ...
Have been tested withline chartand (stacked)bar chart. The library should be compatible with more chart types. Graphauto-refresh Date interval can beabsoluteorrelativetonow Multiple Prometheus queries into the same chart Stacked series Custom backend requests (useful for multitenant apps) ...
{ Bar }from'vue-chartjs'ChartJS.register(CategoryScale, LinearScale, BarElement, Title, Tooltip, Legend)exportdefault{name:'App',components: { Bar }, data() {return{data: {labels: ['January','February','March'],datasets: [{data: [40,20,12] }] },options: {responsive:true} } } ...
Typical Bar Chart Syntax: const myChart = new Chart("myChart", { type: "bar", data: {}, options: {} }); Typical Line Chart Syntax: const myChart = new Chart("myChart", { type: "line", data: {}, options: {} });