easyui 1.4 以上版本datagrid editors 计算两列的值

var lastIndex;$('#tt').datagrid({    onClickRow:function(rowIndex){        if (lastIndex != rowIndex){            $(this).datagrid('endEdit', lastIndex);            $(this).datagrid('beginEdit', rowIndex);        }        lastIndex = rowIndex;    },    onBeginEdit:function(rowIndex){        var editors = $('#tt').datagrid('getEditors', rowIndex);        var n1 = $(editors[0].target);        var n2 = $(editors[1].target);        var n3 = $(editors[2].target);        n1.add(n2).numberbox({            onChange:function(){                var cost = n1.numberbox('getValue')*n2.numberbox('getValue');                n3.numberbox('setValue',cost);            }        })    }});

官方API原文文档：

http://www.jeasyui.com/tutorial/datagrid/datagrid15.php