JS highcharts动态柱状图原理及实现

Eva ·

更新时间:2024-09-20

· 635 次阅读

实现一个柱状图，这个柱状图的高度在不停的刷新，效果如下：

官网是没有动态刷新的示例的，由于需要我查看了其源码，并根据之前示例做出了动态柱状图的效果，希望对同学们有用！

看一下代码：


<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<html>
	<head>
		<title>Highcharts Example</title>
		<script language="javascript" type="text/javascript" src="jquery.min.js"></script>
		<script language="javascript" type="text/javascript" src="highcharts.js"></script>
		<script language="javascript" type="text/javascript" src="exporting.js"></script>
<script type="text/javascript">
var chart;
$(document).ready(function() {
	chart = new Highcharts.Chart({
		chart: {
			renderTo: 'container',
			type: 'column',
			events: {
       load: function() {  
         // set up the updating of the chart each second
         var series = this.series[0];
         setInterval(function() {
          	 var data = [];
          	 data.push(['Apples', Math.random()]);
          	 data.push(['Oranges', Math.random()]);
          	 data.push(['Pears', Math.random()]);
          	 data.push(['Grapes', Math.random()]);
          	 data.push(['Bananas', Math.random()]);
           series.setData(data);
         }, 2000);
       }
     }
		},
		title: {
			text: '<b>Java小强制作</b>'
		},
		xAxis: {
			categories: ['Apples', 'Oranges', 'Pears', 'Grapes', 'Bananas']
		},
		yAxis: {
			min: 0,
			title: {
				text: '当前产值'
			},
			stackLabels: {
				enabled: true,
				style: {
					fontWeight: 'bold',
					color: (Highcharts.theme && Highcharts.theme.textColor) || 'gray'
				}
			}
		},
		legend: {
			align: 'right',
			x: -100,
			verticalAlign: 'top',
			y: 20,
			floating: true,
			backgroundColor: (Highcharts.theme && Highcharts.theme.legendBackgroundColorSolid) || 'white',
			borderColor: '#CCC',
			borderWidth: 1,
			shadow: false
		},
		tooltip: {
			formatter: function() {
				return '<b>'+ this.x +'</b><br/>'+
					this.series.name +': '+ this.y +'<br/>'+
					'Total: '+ this.point.stackTotal;
			}
		},
		plotOptions: {
			column: {
				stacking: 'normal',
				dataLabels: {
					enabled: true,
					color: (Highcharts.theme && Highcharts.theme.dataLabelsColor) || 'white'
				}
			}
		},
		series: [{
			name: 'John',
			data: [5, 3, 4, 7, 2]
		}]
	});
});
</script>
	</head>
	<body>
<div id="container" style="width: 800px;height: 400px"></div>
	</body>
</html>

同样，绘制这个图需要的也是双维数组，我尝试了几个方法，使用 series.setData(data); 可是实现数据的重新指定！

柱状图 js Highcharts

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