How to use Highcharts to create a dashboard chart, specific code examples are required
Foreword:
Dashboard chart is a common data visualization tool. It displays data in the form of dashboards, making the data more intuitive and easy to understand. Highcharts is a powerful JavaScript charting library that supports multiple chart types, including dashboard charts. This article will introduce how to use Highcharts to create dashboard charts and provide specific code examples.
Step 1: Introduce the Highcharts library
First, we need to introduce the Highcharts library file into the HTML page. You can download the high-quality Highcharts library from the official website (https://www.highcharts.com/), or use a CDN (Content Delivery Network) to introduce it.
The following is a sample code:
<!DOCTYPE html>
<html>
<head>
<title>仪表盘图表示例</title>
<script src="https://code.jquery.com/jquery-3.5.1.min.js"></script>
<script src="https://code.highcharts.com/highcharts.js"></script>
</head>
<body>
<div id="chartContainer" style="width: 400px; height: 300px;"></div>
<script>
// 在这里写创建仪表盘图表的代码
</script>
</body>
</html>Step 2: Create a dashboard chart
Next, we need to create a dashboard chart in JavaScript code. First, you need to create a container to display the dashboard chart when the page is loaded. Here we will use a div element as the container and give it a unique id (the id here is "chartContainer").
Then, in the JavaScript code, we create a dashboard chart using the chart function from the Highcharts library.
The following is a sample code:
<script>
$(document).ready(function() {
// 创建仪表盘图表
Highcharts.chart('chartContainer', {
chart: {
type: 'gauge',
plotBackgroundColor: null,
plotBackgroundImage: null,
plotBorderWidth: 0,
plotShadow: false
},
title: {
text: '仪表盘示例'
},
pane: {
startAngle: -150,
endAngle: 150,
background: [{
backgroundColor: {
linearGradient: { x1: 0, y1: 0, x2: 0, y2: 1 },
stops: [
[0, '#FFF'],
[1, '#333']
]
},
borderWidth: 0,
outerRadius: '109%'
}, {
backgroundColor: {
linearGradient: { x1: 0, y1: 0, x2: 0, y2: 1 },
stops: [
[0, '#333'],
[1, '#FFF']
]
},
borderWidth: 1,
outerRadius: '107%'
}, {
// default background
}, {
backgroundColor: '#DDD',
borderWidth: 0,
outerRadius: '105%',
innerRadius: '103%'
}]
},
// 在这里配置仪表盘的数据
series: [{
data: [80],
dial: {
radius: '100%',
baseWidth: 10,
baseLength: '80%',
rearLength: 0
},
}]
});
});
</script>In the above sample code, we use the chart function to create a dashboard chart, specifying the of the chart The type attribute is "gauge", which means creating a dashboard type chart.
Then, we can configure the title of the dashboard chart, the background of the dashboard, the data of the dashboard and other attributes. In the above sample code, we configured a dashboard titled "Dashboard Example". The scale range of the dashboard is -150 to 150, the background is gradient color, and the data is 80. You can configure it accordingly according to your needs.
Step 3: Display the dashboard chart in the page
Finally, we need to display the created dashboard chart in the HTML page. We can use <div id="chartContainer"></div> in the div container of the HTML page and replace it with <div id="in" the above example code style="width: 400px; height: 300px;"></div>.
In this way, when the page is loaded, the created dashboard chart will be automatically displayed.
Summary:
Creating dashboard charts using Highcharts is a very simple task. We only need to introduce the Highcharts library, create a container to display the chart, and configure the properties and data of the chart in JavaScript code. Hopefully the code examples provided in this article will help you create beautiful and powerful dashboard charts.
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