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本文实例讲述了jQuery实现折线图的方法。分享给大家供大家参考。具体如下:
效果图如下所示:

js引用:
复制代码 代码如下:<script src="Js/Index/jquery-1.5.2.min.js" type="text/javascript"></script> 
<script src="js/Index/raphael.2.1.0.min.js" type="text/javascript"></script> 
<script src="js/Index/justgage.1.0.1.js" type="text/javascript"></script>
<script src="Js/Index/highcharts.js" type="text/javascript"></script>   
<script src="Js/Index/exporting.js" type="text/javascript"></script>
定时刷新:
复制代码 代码如下://曲线图 
ar chart; 
 $(document).ready(function() { 
     chart = new Highcharts.Chart({ 
         chart: { 
             renderTo: "divChart",          //放置图表的容器 
             plotBackgroundColor: null, 
             plotBorderWidth: null, 
             defaultSeriesType: "line" 
         }, 
         title: { 
             text: "24小时负荷曲线" 
         }, 
         subtitle: { 
             text: "" 
         }, 
         xAxis: {//X轴数据 
             categories: ["00","01", "02","03", "04","05", "06","07", "08","09", "10","11", "12","13", "14","15", "16","17", "18","19", "20","21", "22","23"], 
 
             labels: { 
                 rotation: -45, //字体倾斜 
                 align: "right", 
                 style: { font: "normal 12px 宋体" } 
             } 
         }, 
         yAxis: {//Y轴显示文字 
             title: { 
                 text: "MW" 
             } 
         }, 
         tooltip: { 
             enabled: true, 
             formatter: function() { 
                 return "<b>" + this.x + "</b><br/>" + this.series.name + ": " + Highcharts.numberFormat(this.y, 1); 
             } 
         }, 
         plotOptions: { 
             line: { 
                 dataLabels: { 
                     enabled: true 
                 }, 
                 enableMouseTracking: true//是否显示title 
             } 
         }, 
         series: [{ 
             name: "1号机组", 
             data: [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0] 
         },{ 
             name: "2号机组", 
             data: [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0] 
         }] 
         }); 
         function getForm(){  
             $.ajax({ 
                 type: "POST",     //要用post方式      
                 url: "WebServiceFH.asmx/GetLoadEveryHourByOne",        
                 contentType: "application/json", 
                 data: {}, 
                 dataType: "json", 
                 success: function (data) {   
                     var data = [data["Load0"],data["Load1"],data["Load2"],data["Load3"],data["Load4"],data["Load5"],data["Load6"],data["Load7"],data["Load8"],data["Load9"],data["Load10"],data["Load11"],data["Load12"],data["Load13"],data["Load14"],data["Load15"],data["Load16"],data["Load17"],data["Load18"],data["Load19"],data["Load20"],data["Load21"],data["Load22"],data["Load23"]];  
                     chart.series[0].setData(data);  
                 }, 
                 error: function (err) {  
                     alert("读取数据出错!"); 
                 } 
             });   
             $.ajax({ 
                 type: "POST",     //要用post方式      
                 url: "WebServiceFH.asmx/GetLoadEveryHourByTwo",        
                 contentType: "application/json",  
                 dataType: "json", 
                 success: function (data) {   
                     var data = [data["Load0"],data["Load1"],data["Load2"],data["Load3"],data["Load4"],data["Load5"],data["Load6"],data["Load7"],data["Load8"],data["Load9"],data["Load10"],data["Load11"],data["Load12"],data["Load13"],data["Load14"],data["Load15"],data["Load16"],data["Load17"],data["Load18"],data["Load19"],data["Load20"],data["Load21"],data["Load22"],data["Load23"]];  
                     chart.series[1].setData(data);    
                 }, 
                 error: function (err) {  
                     alert("读取数据出错!"); 
                 } 
             });  
         } 
         $(document).ready(function() {   
             //每隔3秒自动调用方法,实现图表的实时更新  
             getForm(); 
             window.setInterval(getForm,600000);    
         }); 
});
此处注意:
复制代码 代码如下:var data = [data["Load0"],data["Load1"],data["Load2"],data["Load3"],data["Load4"],data["Load5"],data["Load6"],data["Load7"],data["Load8"],data["Load9"],data["Load10"],data["Load11"],data["Load12"],data["Load13"],data["Load14"],data["Load15"],data["Load16"],data["Load17"],data["Load18"],data["Load19"],data["Load20"],data["Load21"],data["Load22"],data["Load23"]];
chart.series[0].setData(data);
body中只需要:
复制代码 代码如下:<div id="divChart"> </div>
希望本文所述对大家的jQuery程序设计有所帮助。