EasyUI中datagrid的行编辑模式中，找到特定的Editor，并为其添加事件

function editrow(index) {    if (rowedit == 0) {        $(‘#ZCEditList‘).datagrid(‘beginEdit‘, index);        rowedit = 1;        var editors = $(‘#ZCEditList‘).datagrid(‘getEditors‘, index);              var TonsEditor = editors[3];        var HorsepowerEditor = editors[4];           var StandardEditor = editors[10];         TonsEditor.target.bind(‘blur‘, function () {            HorsepowerEditor.target.val(‘‘);            var sum = TonsEditor.target.val() * 10;                      StandardEditor.target.val(sum);        });            } }

       //keyCtr 扩展方法 下上键实现选择        $.extend($.fn.datagrid.methods, {            keyCtr : function (jq) {                return jq.each(function () {                    var grid = $(this);                    grid.datagrid(‘getPanel‘).panel(‘panel‘).attr(‘tabindex‘, 1).bind(‘keydown‘, function (e) {                        switch (e.keyCode) {                        case 38: // up                            var selected = grid.datagrid(‘getSelected‘);                            if (selected) {                                var index = grid.datagrid(‘getRowIndex‘, selected);                                grid.datagrid(‘selectRow‘, index - 1);                            } else {                                var rows = grid.datagrid(‘getRows‘);                                grid.datagrid(‘selectRow‘, rows.length - 1);                            }                            break;                        case 40: // down                            var selected = grid.datagrid(‘getSelected‘);                            if (selected) {                                var index = grid.datagrid(‘getRowIndex‘, selected);                                grid.datagrid(‘selectRow‘, index + 1);                            } else {                                grid.datagrid(‘selectRow‘, 0);                            }                            break;                        }                    });                });            }        });

//实现统计功能
$.extend($.fn.datagrid.methods, {    statistics: function (jq) {        var opt=$(jq).datagrid(‘options‘).columns;        var rows = $(jq).datagrid("getRows");                 var footer = new Array();        footer[‘sum‘] = "";        footer[‘avg‘] = "";        footer[‘max‘] = "";        footer[‘min‘] = "";                 for(var i=0; i<opt[0].length; i++){            if(opt[0][i].sum){                footer[‘sum‘] = footer[‘sum‘] + sum(opt[0][i].field)+ ‘,‘;            }            if(opt[0][i].avg){                footer[‘avg‘] = footer[‘avg‘] + avg(opt[0][i].field)+ ‘,‘;            }            if(opt[0][i].max){                footer[‘max‘] = footer[‘max‘] + max(opt[0][i].field)+ ‘,‘;            }            if(opt[0][i].min){                footer[‘min‘] = footer[‘min‘] + min(opt[0][i].field)+ ‘,‘;            }        }         var footerObj = new Array();                 if(footer[‘sum‘] != ""){            var tmp = ‘{‘ + footer[‘sum‘].substring(0,footer[‘sum‘].length - 1) + "}";            var obj = eval(‘(‘ + tmp + ‘)‘);            if(obj[opt[0][0].field] == undefined){                footer[‘sum‘] += ‘"‘ + opt[0][0].field + ‘":"<b>当页合计:</b>"‘;                obj = eval(‘({‘ + footer[‘sum‘] + ‘})‘);            }else{                obj[opt[0][0].field] = "<b>当页合计:</b>" + obj[opt[0][0].field];            }            footerObj.push(obj);        }                 if(footer[‘avg‘] != ""){            var tmp = ‘{‘ + footer[‘avg‘].substring(0,footer[‘avg‘].length - 1) + "}";            var obj = eval(‘(‘ + tmp + ‘)‘);            if(obj[opt[0][0].field] == undefined){                footer[‘avg‘] += ‘"‘ + opt[0][0].field + ‘":"<b>当页均值:</b>"‘;                obj = eval(‘({‘ + footer[‘avg‘] + ‘})‘);            }else{                obj[opt[0][0].field] = "<b>当页均值:</b>" + obj[opt[0][0].field];            }            footerObj.push(obj);        }                 if(footer[‘max‘] != ""){            var tmp = ‘{‘ + footer[‘max‘].substring(0,footer[‘max‘].length - 1) + "}";            var obj = eval(‘(‘ + tmp + ‘)‘);                         if(obj[opt[0][0].field] == undefined){                footer[‘max‘] += ‘"‘ + opt[0][0].field + ‘":"<b>当页最大值:</b>"‘;                obj = eval(‘({‘ + footer[‘max‘] + ‘})‘);            }else{                obj[opt[0][0].field] = "<b>当页最大值:</b>" + obj[opt[0][0].field];            }            footerObj.push(obj);        }                 if(footer[‘min‘] != ""){            var tmp = ‘{‘ + footer[‘min‘].substring(0,footer[‘min‘].length - 1) + "}";            var obj = eval(‘(‘ + tmp + ‘)‘);                         if(obj[opt[0][0].field] == undefined){                footer[‘min‘] += ‘"‘ + opt[0][0].field + ‘":"<b>当页最小值:</b>"‘;                obj = eval(‘({‘ + footer[‘min‘] + ‘})‘);            }else{                obj[opt[0][0].field] = "<b>当页最小值:</b>" + obj[opt[0][0].field];            }            footerObj.push(obj);        }                                   if(footerObj.length > 0){            $(jq).datagrid(‘reloadFooter‘,footerObj);         }                          function sum(filed){            var sumNum = 0;            for(var i=0;i<rows.length;i++){                sumNum += Number(rows[i][filed]);            }            return ‘"‘ + filed + ‘":"‘ + sumNum.toFixed(2) +‘"‘;        };                 function avg(filed){            var sumNum = 0;            for(var i=0;i<rows.length;i++){                sumNum += Number(rows[i][filed]);            }            return ‘"‘ + filed + ‘":"‘+ (sumNum/rows.length).toFixed(2) +‘"‘;        }         function max(filed){            var max = 0;            for(var i=0;i<rows.length;i++){                if(i==0){                    max = Number(rows[i][filed]);                }else{                    max = Math.max(max,Number(rows[i][filed]));                }            }            return ‘"‘ + filed + ‘":"‘+ max +‘"‘;        }                 function min(filed){            var min = 0;            for(var i=0;i<rows.length;i++){                if(i==0){                    min = Number(rows[i][filed]);                }else{                    min = Math.min(min,Number(rows[i][filed]));                }            }            return ‘"‘ + filed + ‘":"‘+ min +‘"‘;        }    }});

用法 ：在字段中加入 sum:true;

http://www.oschina.net/code/snippet_659525_20039