dg-chart-on-*

功能：绑定图表事件处理函数。

必填：否

元素：<div>图表元素

格式：function(chartEvent){ … }

常用的图表事件处理函数属性有：
单击：dg-chart-on-click
双击：dg-chart-on-dblclick
鼠标按下：dg-chart-on-mousedown
鼠标松开：dg-chart-on-mouseup
鼠标进入：dg-chart-on-mouseover
鼠标离开：dg-chart-on-mouseout

示例：

  1. <head>
  2. <script type="text/javascript">
  3. function clickHandler(chartEvent)
  4. {
  5.   alert("click");
  6. };
  7. var chartEventHandlers=
  8. {
  9.   dblClickHandler: function(chartEvent){ alert("dblclick"); },
  10.   mouseoverHandler: function(chartEvent){ alert("mouseover"); },
  11. };
  12. </script>
  13. </head>
  14. <body>
  15.   <div dg-chart-widget="..." dg-chart-on-click="function(chartEvent){  alert('click'); }"></div>
  16.   <div dg-chart-widget="..." dg-chart-on-click="clickHandler"></div>
  17.   <div dg-chart-widget="..." dg-chart-on-dblclick="chartEventHandlers.dblClickHandler"></div>
  18.   <div dg-chart-widget="..." dg-chart-on-mouseover="chartEventHandlers.mouseoverHandler"></div>
  19. </body>

图表事件对象（chartEvent）的详细说明文档请参考图表事件对象章节。