如何制作圖表區域的邊框半徑chart.js 我需要為圖表區域制作16px的邊框半徑也許有插件？
我正在使用chart.js V3.7 如何為圖表區域制作邊框半徑chart.js 我需要為圖表區域制作16px的邊框半徑也許有插件？我正在使用 chart.js V3.7。
const ctx = document.getElementById('myChart').getContext('2d');
var gradient = ctx.createLinearGradient(0, 0, 0, 400)
gradient.addColorStop(0, 'rgba(244, 192, 56, 0.3)')
gradient.addColorStop(0.35, 'rgba(244, 192, 56, 0.3)')
gradient.addColorStop(1, 'rgba(244, 192, 56, 0)');
const plugin = {
id: 'background',
beforeDraw: (chart, args, opts) => {
if (!opts.color) {
return;
}
const {
ctx,
chartArea
} = chart;
ctx.fillStyle = opts.color;
ctx.fillRect(chartArea.left, chartArea.top, chartArea.width, chartArea.height)
}
};
Chart.register(plugin);
var config = {
type: 'line',
data: {
labels: [['05.08', '2021'], ['06.08', '2021'], ['07.08', '2021'], ['08.08', '2021'], ['09.08', '2021'], ['10.08', '2021'], ['11.08', '2021'], ['12.08', '2021'], ['13.08', '2021'], ['14.08', '2021'], ['15.08', '2021']],
datasets: [{
data: [130, 260, 240, 270, 249, 310, 295, 330, 247, 280, 265, 265,],
fill: true,
backgroundColor: gradient,
borderColor: [
'#F4C038',
],
borderWidth: 4,
pointRadius: 6,
pointBackgroundColor: '#272E3B',
pointHoverBorderColor: '#fff',
pointBorderWidth: 4,
pointHoverBorderWidth: 4,
}]
},
options: {
responsive: true,
tension: 0.25,
plugins: {
background: {
color: '#272E3B'
},
legend: {
display: false,
labels: {
font: {
size: 14,
family: "Rubik"
}
}
}
},
scales: {
y: {
grid: {
color: '#3D4554',
borderColor: '#3D4554',
tickColor: 'transparent',
},
ticks: {
padding: 38,
callback: function(value) {
return '$' value;
},
color: "rgba(255, 255, 255, 0.5)",
font: {
size: 16,
family: "Rubik",
weight: 300
},
}
},
x: {
grid: {
color: '#3D4554',
borderColor: '#3D4554',
tickColor: 'transparent',
},
ticks: {
padding: 16,
color: "rgba(255, 255, 255, 0.5)",
font: {
size: 14,
family: "Rubik",
weight: 300
},
}
}
},
}
};
new Chart(ctx, config);
uj5u.com熱心網友回復：
沒有插件，但您可以像這樣撰寫自己的插件：
const plugin = {
id: 'border',
beforeDraw(chart, args, options) {
const {
ctx,
chartArea: {
left,
top,
width,
height
}
} = chart;
ctx.save();
ctx.strokeStyle = options.color;
ctx.lineWidth = options.width;
ctx.setLineDash(options.dash || []);
ctx.lineDashOffset = options.offset;
ctx.strokeRect(left, top, width, height);
ctx.restore();
}
};
const options = {
type: 'line',
data: {
labels: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"],
datasets: [{
label: '# of Votes',
data: [12, 19, 3, 5, 2, 3],
borderColor: 'orange'
},
{
label: '# of Points',
data: [7, 11, 5, 8, 3, 7],
borderColor: 'pink'
}
]
},
options: {
plugins: {
border: {
color: 'red',
width: 16
}
}
},
plugins: [plugin]
}
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/3.7.0/chart.js"></script>
</body>uj5u.com熱心網友回復：
要在chart.js中給圖表區域添加邊框，我們需要使用chartAreaBorder插件
const chartAreaBorder = {
id: 'chartAreaBorder',
beforeDraw(chart, args, options) {
const {ctx, chartArea: {left, top, width, height}} = chart;
ctx.save();
ctx.strokeStyle = options.borderColor;
ctx.lineWidth = options.borderWidth;
ctx.setLineDash(options.borderDash || []);
ctx.lineDashOffset = options.borderDashOffset;
ctx.strokeRect(left, top, width, height);
ctx.restore();
}
};
在創建圖表之前粘貼上面的代碼，然后使用以下代碼創建圖表及其周圍的邊框，
const ctx = document.getElementById('dynamic-chart').getContext('2d');
const myChart = new Chart(ctx, {
type: 'Your_Chart_Type_Here',
data: {
labels:Your_Data_Here,
datasets: [{
label: 'Your Data Here',
data: 'Your_Data_Here,
backgroundColor: [
'rgba(255, 99, 132, 0.2)',
'rgba(54, 162, 235, 0.2)',
'rgba(255, 206, 86, 0.2)',
'rgba(75, 192, 192, 0.2)',
'rgba(153, 102, 255, 0.2)',
'rgba(255, 159, 64, 0.2)'
],
borderColor: [
'rgba(255, 99, 132, 1)',
'rgba(54, 162, 235, 1)',
'rgba(255, 206, 86, 1)',
'rgba(75, 192, 192, 1)',
'rgba(153, 102, 255, 1)',
'rgba(255, 159, 64, 1)'
],
borderWidth: 1
}]
},
options: {
plugins:{
chartAreaBorder:{
borderColor:'red',
borderWidth:2,
borderDash:[5,5],
borderDashOffset:2,
}
}
}
},
plugins:[chartAreaBorder]
});
結果如下
此代碼將為chartArea 提供邊界。我希望這能解決你的問題。
轉載請註明出處，本文鏈接：https://www.uj5u.com/yidong/399377.html
標籤：javascript html css 图表.js