Highcharts.getSVG = function (charts) {
    var svgArr = [],
      top = 0,
      width = 0;
 
    $.each(charts, function (i, chart) {
 
      var svg = chart.getSVG();
      svg = svg.replace('<svg', '<g transform="translate(0,' + top + ')" ');
      svg = svg.replace('</svg>', '</g>');
      //svg = svg.replace('<svg', '<zg ct=' + chart.options.chartype);
      //svg = svg.replace('</svg>', '</zg>');(这段注释的代码用来生成多个图片)
 
      top += chart.chartHeight;
      width = Math.max(width, chart.chartWidth);
 
      svgArr.push(svg);
    });
 
    return '<svg height="' + top + '" width="' + width + '" version="1.1" xmlns="http://www.w3.org/2000/svg">' + svgArr.join('') + '</svg>';
};
Highcharts.exportCharts = function (charts, options) {
   var form
   svg = Highcharts.getSVG(charts);
   // 合并选项
   options = Highcharts.merge(Highcharts.getOptions().exporting, options);
 
   // 新建form
   form = Highcharts.createElement('form', {
     method: 'post',
     action: options.url
   }, {
     display: 'none'
   }, document.body);
 
   // 添加参数
   Highcharts.each(['filename', 'type', 'width', 'svg', 'DTime'], function (name) {
     Highcharts.createElement('input', {
       type: 'hidden',
       name: name,
       value: {
         filename: options.filename || 'chart',
         type: options.type,
         width: options.width,
         svg: svg,
         DTime: options.DTime //(此参数为自定义参数)
       }[name]
     }, null, form);
   });
   //console.log(svg); return;
   // submit
   form.submit();
   //清除
   form.parentNode.removeChild(form);
 };