const ctx = document.getElementById('myChart'); const data = { labels: [ '男性', '女性', '其它' ], datasets: [{ label: '环形图实例', data: [300, 260, 40], backgroundColor: [ 'rgb(255, 99, 132)', 'rgb(54, 162, 235)', 'rgb(255, 205, 86)' ], hoverOffset: 4 }] }; const config = { type: 'doughnut', data: data, options: { responsive: true, // 设置图表为响应式,根据屏幕窗口变化而变化 maintainAspectRatio: false,// 保持图表原有比例 scales: { yAxes: [{ ticks: { beginAtZero:true } }] } } }; const myChart = new Chart(ctx, config);