Javascript 如何使用对象数组作为序列数据，使用Highchart库创建多序列时间折线图

通过Ajax调用从数据库获取数据。数据采用此格式。从

[ 
{orderdate:'2014-06-02',empname:'Bilal',NetSales:'0.0000'}, 
{orderdate:'2014-06-05',empname:'Admin',NetSales:'2459072.0000'}, 
{orderdate:'2014-06-05',empname:'Bilal',NetSales:'10368.0000'}, 
{orderdate:'2014-06-06',empname:'Bilal',NetSales:'229864.0000'}, 
{orderdate:'2014-06-07',empname:'Bilal',NetSales:'246427.5000'}, 
{orderdate:'2014-06-09',empname:'Kashif',NetSales:'11200.0000'}, 
{orderdate:'2014-06-09',empname:'Bilal',NetSales:'355915.0000'}, 
{orderdate:'2014-06-10',empname:'Kashif',NetSales:'22000.0000'}, 
{orderdate:'2014-06-10',empname:'Bilal',NetSales:'685350.0000'}, 
{orderdate:'2014-06-11',empname:'Bilal',NetSales:'848331.0000'}  
]

我想要一个使用Highchart库的时间线图。Xaxis上的Orderdate和y轴上的netSales。每个员工一个绘图系列。就像JS小提琴上的样条不规则时间图。

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将其转换为几个2d数组，如Highcharts所期望的。我认为这应该是一个答案；）