Highcharts 是一个用纯JavaScript编写的一个图表库, 能够很简单便捷的在web网站或是web应用程序添加有交互性的图表,本文主要研究在随机数展示上的应用。
具体代码如下:
<html> <head> <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script> <script type="text/javascript" src="http://code.highcharts.com/highcharts.js"></script> <script> $(function () { $(document).ready(function() { Highcharts.setOptions({ global: { useUTC: false } }); var chart; $('#container').highcharts({ chart: { type: 'spline', animation: Highcharts.svg, // don't animate in old IE marginRight: 10, events: { load: function() { // set up the updating of the chart each second var series = this.series[0]; setInterval(function() { var x = (new Date()).getTime(), // current time y = Math.random(); series.addPoint([x, y], true, true); }, 1000); } } }, title: { text: '实时随机数展示' //主标题 }, xAxis: { //X轴 type: 'datetime', tickPixelInterval: 150 }, yAxis: { //Y轴 title: { text: '数据' }, plotLines: [{ value: 0, width: 1, color: '#808080' }] }, tooltip: { formatter: function() { return '<b>'+ this.series.name +'</b><br>'+ Highcharts.dateFormat('%Y-%m-%d %H:%M:%S', this.x) +'<br>'+ Highcharts.numberFormat(this.y, 2); } }, legend: { enabled: false }, exporting: { enabled: false }, series: [{ name: '随机数', data: (function() { // 产生随机数 var data = [], time = (new Date()).getTime(), i; for (i = -24; i <= 0; i++) { //显示范围为25个数据 ,可修改 data.push({ x: time + i * 1000, //1000毫秒产生一个数据 y: Math.random() //随机数产生函数 }); } return data; })() }] }); }); }); </script> </head> <body> <div id="container" style="min-width:400px;height:400px;"></div> </body> </html>
原创文章,作者:ItWorker,如若转载,请注明出处:https://blog.ytso.com/8762.html