Highcharts 是一個用純JavaScript編寫的一個圖表庫， 能夠很簡單便捷的在web網站或是web應用程式添加有互動性的圖表,本文主要研究在随機數展示上的應用。
具體代碼如下：
<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: '實時随機數展示' //主标題
},
xAxis: { //X軸
type: 'datetime',
tickPixelInterval: 150
},
yAxis: { //Y軸
title: {
text: '資料'
},
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: '随機數',
data: (function() {
// 産生随機數
var data = [],
time = (new Date()).getTime(),
i;
for (i = -24; i <= 0; i++) { //顯示範圍為25個資料 ，可修改
data.push({
x: time + i * 1000, //1000毫秒産生一個資料
y: Math.random() //随機數産生函數
});
}
return data;
})()
}]
});
});
});
</script>
</head>
<body>
<div id="container" style="min-width:400px;height:400px;"></div>
</body>
</html>
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