通过书写代码，监听事件，实现自动计算。

本例文件位置：安装目录\YZSoft\request\forms\Expense.js。

体验：应用模块->发起申请->报销。

代码：

listeners: {

   scope: me,

   keyup: 'updateAmount'

}

listeners: {

   scope:me,

   delete: 'updateAmount'

}

updateAmount: function () {

   var me = this,

       fields = me.getFields(),

       formData = me.$getFormData().FormData

       amount = 0;

   Ext.each(formData.iDemoExpenseDetail, function (row) {

       amount += row.Amount || 0;

   });

   fields.amount.setValue(amount);

}

Created with the Personal Edition of HelpNDoc: Easily create Web Help sites