https://bbs.fanruan.com/thread-134131-1-1.html
$(".fr-sheetbutton-container").click(function() //切换 sheet 时
{
var a = contentPane.$contentPane.data('TabPane').tabBtns[contentPane.selectedIndex].options.name; //获取当前s heet 的名字
if(a == "sheet2") {
contentPane.parameterEl.getWidgetByName("A").setValue(2);
} else {
contentPane.parameterEl.getWidgetByName("A").setValue(1);
}
});