方法1:此方法适用于Extjs按钮handler处理,一般在最前面说明

function changeMsgBoxFocus(buttonIdx){       function exmyth()       {                Ext.MessageBox.getDialog().buttons[buttonIdx].focus();       }       exmyth.defer(100, this);}Ext.MessageBox.getDialog().addListener('show',  changeMsgBoxFocus.createCallback(2));

Ext.MessageBox.buttonText.yes = 'Remove';Ext.MessageBox.buttonText.no = 'Do nothing';Ext.MessageBox.getDialog().on({    show: function()    {        Ext.MessageBox.getDialog().buttons[2].focus();    },    single:true    //,delay:50 // maybe needed});Ext.MessageBox.show({    title   : 'Please confirm',    msg     : 'Do your really want to delete node \'' + this.curNode.text + '\'?',    buttons : Ext.MessageBox.YESNO,    fn      : this.removeNodeConfirmHandleMsgBox,    scope: this,    animEl  : this.tree,    icon    : Ext.MessageBox.QUESTION});

方法2:此方法适用于页面全局,一般在页面return的init方法中指定

Ext.MessageBox.getDialog().defaultButton = 2;

附上我项目模块的代码

1.Smsd.widget.AddressGroupBtn.js

Ext.ns("Smsd.widget");var mgrAddrGroupForm;var mgrAddrGroupWin;var type;var groupTree;var root;var loader;/** * 管理组 * @author zhongmm * @class Smsd.widget.AddressGroupBtn * @extends Ext.Button */Smsd.widget.AddressGroupBtn =Ext.extend(Ext.Button,{    text: "管理组",    width: 50,      back: function (){},    handler: function (btn) {        function changeMsgBoxFocus(buttonIdx){           function exmyth()           {                Ext.MessageBox.getDialog().buttons[buttonIdx].focus();           }           exmyth.defer(100, this);        }        Ext.MessageBox.getDialog().addListener('show',  changeMsgBoxFocus.createCallback(2));        root = new Ext.tree.AsyncTreeNode(        {//            href : '',//            hrefTarget : '_blank',//            iconCls : "me-iconCls",            id : "0",            text : "个性化通讯录",            leaf:false        });                loader = new Ext.tree.TreeLoader( {            dataUrl:Ext.sysd.getWithToken('/addressGroup/listAddressGroup.do'),            method : 'POST'        });                groupTree = new Ext.tree.TreePanel( {            id : 'groupId',            name : 'groupName',            root : root,            animate : false,            containerScroll : true,            autoScroll : true,            loader:loader,             width: 325,            height: 200,            line: true,            border : true        });        root.expand(false, true); //默认展开一级                var topBtn = new Ext.Toolbar({                            autoHeight : true,        items : [{xtype : 'tbseparator'},                {text : '新增',iconCls : 'silk_page_add',handler :function(){mgrAddrGroup(0);}},                {xtype : 'tbseparator'},                   {text : '编辑',iconCls : 'silk_page_edit',handler :function(){                       var selNode = groupTree.getSelectionModel().getSelectedNode();                       if(!selNode)                       {                           Ext.Msg.alert(Sysd.Msg.AlertTitle,"请选择一条组信息！");                       }                       else if(selNode.id == groupTree.getRootNode().id)                       {                           Ext.Msg.alert(Sysd.Msg.AlertTitle,"无法编辑根节点！");                       }                       else                       {                           mgrAddrGroup(1);                           Ext.getCmp("groupId").setValue(selNode.id);                           Ext.getCmp("groupName").setValue(selNode.text);                       }                   }},                   {xtype : 'tbseparator'},                   {text : '删除',iconCls : 'silk_page_delete', handler :function(){                       var selNode = groupTree.getSelectionModel().getSelectedNode();                       if(!selNode)                       {                           Ext.Msg.alert(Sysd.Msg.AlertTitle,"请选择一条组信息！");                       }                       else if(selNode.id == groupTree.getRootNode().id)                       {                           Ext.Msg.alert(Sysd.Msg.AlertTitle,"无法删除根节点！");                       }                       else                    {                        countAddressGroup(selNode.id);                    }                   }},                   {xtype : 'tbseparator'},                {text : '返回',iconCls : 'silk_application_home',handler :function(){win.close();btn.back()}},                {xtype : 'tbseparator'},                '->',                new Ext.sysd.Helper({                    moduleCode : '100600'                })                ]        });                //组管理主窗口        var win=new Ext.Window({            tbar:topBtn,            title:'管理组',            width:340,            height:258,            closable:false,            layout:'column',            modal : true,            resizable:false,//            draggable:false,            closable:true,            items:[groupTree]});        win.show();                    //数据检验        function confirmGroupName()        {            var groupName = Ext.getCmp("groupName").getValue();            if("" == groupName)            {                Ext.Msg.alert(Sysd.Msg.AlertTitle, "请输入组名！");                return false;            }            else if(20 < groupName.length)            {                Ext.Msg.alert(Sysd.Msg.AlertTitle, "组名过长，不能大于20个字符，请重新输入！");                return false;            }            return true;        }                //新增,编辑组信息,成功刷新组管理树        function saveUpdateGroupName(type)        {            var groupId = Ext.getCmp("groupId").getValue();            var groupName = Ext.getCmp("groupName").getValue();            if(0 == type)            {                Ext.Ajax.request({                    url : Ext.sysd.getWithToken('/addressGroup/saveAddressGroup.do'),                    method : 'post',                    params : {                        groupName:groupName                    },                    success : function(response) {                        Ext.Msg.alert(Sysd.Msg.AlertTitle, "保存成功！");                        loader.load(root,function(){                            root.expand(false, true);                         });                        Ext.getCmp("mgrAddrGroupWin").close();                    },                    failure : function(response) {                        Ext.Msg.alert(Sysd.Msg.AlertTitle, "保存失败！");                    }                });            }            else if(1 == type)            {                Ext.Ajax.request({                    url : Ext.sysd.getWithToken('/addressGroup/updateAddressGroup.do'),                    method : 'post',                    params : {                        groupId : groupId,                        groupName:groupName                    },                    success : function(response) {                        Ext.Msg.alert(Sysd.Msg.AlertTitle, "编辑成功！");                        loader.load(root,function(){                            root.expand(false, true);                         });                        Ext.getCmp("mgrAddrGroupWin").close();                    },                    failure : function(response) {                        Ext.Msg.alert(Sysd.Msg.AlertTitle, "编辑失败！");                    }                });            }        }                //新增,编辑组信息弹出窗口        function mgrAddrGroup(type)        {            mgrAddrGroupForm = new Ext.form.FormPanel({                width:200,                height:100,                frame:true,                labelWidth:50,                labelAlign:"right",                defaultType:"textfield",                items:[                    {id:"groupId", name:"groupId",fieldLabel:"",hidden:true,hideLabel:true},                    {id:"groupName", name:"groupName",fieldLabel:"组名",width:100,allowBlank:false}],                buttons:[{text:"确认",iconCls : 'silk_tick',handler:function(){                        var groupName = Ext.getCmp("groupName").getValue();                        var selNode = groupTree.getSelectionModel().getSelectedNode();                        if(1 == type && groupName == selNode.text)                        {                            mgrAddrGroupWin.hide();                        }                        else                        {                            countAddressGroupByName(groupName,type);                        }                }},{text:"取消",iconCls:'silk_cancel',handler:function(){                                                var groupName = Ext.getCmp("groupName").getValue();                        var selNode = groupTree.getSelectionModel().getSelectedNode();                        if(0 == type && "" != groupName)                        {                            //组名未保存，确定取消？                            Ext.Msg.confirm(Sysd.Msg.AlertTitle,"是否确定要取消，取消将不保存数据？",function(btn)                            {                                if('yes' == btn)                                {                                    mgrAddrGroupWin.hide();                                    return true;                                }                                else                                {                                    return false;                                }                            });                        }                        else if(1 == type && "" != groupName && groupName != selNode.text)                        {                            //组名已修改，确定取消？                            Ext.Msg.confirm(Sysd.Msg.AlertTitle,"是否确定要取消，取消将不保存数据？",function(btn)                            {                                if('yes' == btn)                                {                                    mgrAddrGroupWin.hide();                                    return true;                                }                                else                                {                                    return false;                                }                            });                        }                        else if(1 == type && groupName == selNode.text)                        {                            mgrAddrGroupWin.hide();                        }                        else                        {                            mgrAddrGroupWin.hide();                        }                }}]            })                        mgrAddrGroupWin = new Ext.Window(            {                id:"mgrAddrGroupWin",                title:0 == type?"新增组信息":"编辑组信息",                width:210,                height:150,                frame:true,                labelWidth:60,                labelAlign:"right",                defaultType:"textfield",                autoHeight: true,                resizable:false,                closable:false,    //            draggable:false,                modal:true,                items:[mgrAddrGroupForm]            });                    mgrAddrGroupWin.on("hide",function(){mgrAddrGroupWin.destroy()});                        mgrAddrGroupWin.show();        }                //统计组中联系人信息        function countAddressGroup(groupId)        {            Ext.Ajax.request            ({                 url : Ext.sysd.getWithToken('/addressGroup/countAddressGroup.do'),                 method : 'post',                 params :                 {                        groupId:groupId                 },                 failure : function(){                     Ext.Msg.alert(Sysd.Msg.AlertTitle,"获取数据失败!");                     return false;                 },                 success : function(response){                     var count = Ext.decode(response.responseText);                     if(count>0)                     {                         Ext.Msg.alert(Sysd.Msg.AlertTitle, "该组有联系人信息，不能删除！");                         return false;                     }                     else                     {                         comfirmDelete();                         return true;                     }                 }             });             return true;         }                //统计同名组数        function countAddressGroupByName(groupName,type)        {            Ext.Ajax.request            ({                 url : Ext.sysd.getWithToken('/addressGroup/countAddressGroupByName.do'),                 method : 'post',                 params :                 {                        groupName:groupName                 },                 failure : function(){                     Ext.Msg.alert(Sysd.Msg.AlertTitle,"获取数据失败!");                     return false;                 },                 success : function(response){                     var count = Ext.decode(response.responseText);                     if(count>0)                     {                         Ext.Msg.alert(Sysd.Msg.AlertTitle, "已经存在此组名，请重新输入！");                         return false;                     }                     else                     {                         if(confirmGroupName())                        {                            saveUpdateGroupName(type);                        }                     }                 }             });             return true;         }                function comfirmDelete()        {            var selNode = groupTree.getSelectionModel().getSelectedNode();            Ext.Msg.confirm(Sysd.Msg.AlertTitle,"是否删除该组信息？",function(btn)            {                if('yes' == btn)                {                    deleteAddressGroup(selNode.id);                    return true;                }                else                {                    return false;                }            });        }                //删除组信息        function deleteAddressGroup(groupId)        {            Ext.Ajax.request({                    url : Ext.sysd.getWithToken('/addressGroup/deleteAddressGroup.do'),                    method : 'post',                    params : {                        groupId:groupId                    },                    success : function(response) {                        Ext.Msg.alert(Sysd.Msg.AlertTitle, "删除成功！");                        loader.load(root,function(){                            root.expand(false, true);                         });                    },                    failure : function(response) {                        Ext.Msg.alert(Sysd.Msg.AlertTitle, "删除成功！");                    }                });        }    }});Ext.reg('addressGroupBtn', Smsd.widget.AddressGroupBtn);//管理组

2.sms.appSetup.js

Ext.ns("sms.appSetup");var editLevelForm;var gridDirect;var formDirect;var winDirect;var editLevelWin;var gridMain;var storeMain;var timeBlock;var editTimeForm;var editTimeWin;var seqNum = 0;        //序号递增初始值var idArr;            //业务代码var timeStartArr;    //已选择记录的起始时间数组var timeEndArr        //已选择记录的截止时间数组var count;            //已选择记录的时间段数var iniCount;/** * 业务应用设置 * @author zhongmm */sms.appSetup.main = function(){        var storeMain = new Ext.data.JsonStore({        url : Ext.sysd.getWithToken("/smsAppSetup/listAppSetup.do"),        root : '',        totalProperty : 'totalCount',        autoLoad : false,        fields : [{name:'SEQ_CODE',type:'string'},                {name:'BUSINESS_NAME',type:'string'},                {name:'SMS_LEVEL',type:'string'},                {name:'SMS_LEVEL_BAK',type:'string'},                {name:'TIME_START',type:'string'},                {name:'TIME_END',type:'string'},                {name:'BUSINESS_CODE',type:'string'},                {name:'BUSINESS_NAME_BAK',type:'string'}                ]    });        function setCenter(v) {        return "" + v + "";    }            var tb = new Ext.Toolbar({        autoHeight : true,        items : ['-', {            text : '级别编辑',            iconCls : 'silk_page_edit',            handler : function() {                if(hasSelected())                {                    editLevel();                    var businessCode = String(gridMain.getSelectionModel().getSelected().get("BUSINESS_CODE"));                    var businessName = String(gridMain.getSelectionModel().getSelected().get("BUSINESS_NAME_BAK"));                    var smsLevel = String(gridMain.getSelectionModel().getSelected().get("SMS_LEVEL_BAK"));                       Ext.getCmp("businessCode").setValue(businessCode);                       Ext.getCmp("businessName").setValue(businessName);                       Ext.getCmp("smsLevel").setValue(smsLevel);                }            }        }, {            xtype : 'tbseparator'        }, {            text : '发送时间编辑',            iconCls : 'silk_page_edit',            handler : function() {                if(hasSelected())                {                    var timeBusinessCode = String(gridMain.getSelectionModel().getSelected().get("BUSINESS_CODE"));                    var timeBusinessName = String(gridMain.getSelectionModel().getSelected().get("BUSINESS_NAME_BAK"));                                        var recordCount = gridMain.getStore().getCount();                     timeStartArr=new Array();                    timeEndArr=new Array();                    for(var i = 0; i < recordCount; i++)                    {                        var id = gridMain.getStore().getAt(i).get("BUSINESS_CODE");                        if(timeBusinessCode == id)                        {                            var timeStartValue = gridMain.getStore().getAt(i).get("TIME_START");                            var timeEndValue = gridMain.getStore().getAt(i).get("TIME_END");                            timeStartArr.push(timeStartValue);                            timeEndArr.push(timeEndValue);                        }                    }                    count = timeStartArr.length > timeEndArr.length ? timeStartArr.length :timeEndArr.length;                    iniCount = count;                    editTime();                    for(var i = 0; i < count; i++)                    {                        Ext.getCmp("timeStart" + i ).setValue(timeStartArr[i]);                        Ext.getCmp("timeEnd" + i ).setValue(timeEndArr[i]);                    }                                           Ext.getCmp("timeBusinessCode").setValue(timeBusinessCode);                       Ext.getCmp("timeBusinessName").setValue(timeBusinessName);                }            }        },{            xtype : 'tbseparator'        },{            text : '级别说明',            iconCls : 'silk_application_view_detail',            handler : function() {                directLevel();            }        },{            xtype : 'tbseparator'        },        '->',            new Ext.sysd.Update({                moduleCode : '500100'            }),            '-',            new Ext.sysd.Suggest({                moduleCode : '500100'            }),            '-',            new Ext.sysd.Helper({                moduleCode : '500100'            })        ]    });        gridMain=new Ext.grid.GridPanel({        title:"业务应用设置",        tbar:tb,        region:'center',        height:240,        store:storeMain,        stripeRows : true,        autoScroll : true,        enableHdMenu:false,        columns:[        {            header : setCenter('序号'),            align:'center',            dataIndex : 'SEQ_CODE',            width : 60,            sortable : false        },{            header : setCenter('业务应用'),            dataIndex : 'BUSINESS_NAME',            align:'center',            width : 100,            sortable : false        },{            header : setCenter('短信级别'),            dataIndex : 'SMS_LEVEL',            align:'center',            width : 100,            sortable : false        },{            header : setCenter('允许发送起始时间'),            dataIndex : 'TIME_START',            align:'center',            width : 100,            sortable : false        },{            header : setCenter('允许发送截止时间'),            align:'center',            dataIndex : 'TIME_END',            width : 100,            sortable : false        }],        loadMask:{msg:"请稍等..."},        viewConfig : { forceFit : true }    });        //合并单元格    gridMain.store.on("load",function(){                initSeq();        gridSpan(gridMain,"row","[SEQ_CODE],[BUSINESS_NAME],[SMS_LEVEL]","BUSINESS_NAME");       });    function createWindow(){        var mainWin = new Ext.Viewport({            title : '业务应用设置',            layout : 'border',            defauls : {                column : 1            },            closable : false,            draggable : false,            resizable : false,            items : [gridMain]        });        mainWin.show();    }        return {        init : function() {            Ext.MessageBox.getDialog().defaultButton = 2;            createWindow();            gridMain.getStore().reload(            /*{                params:                {                    //默认显示第一页记录                    start:0,                    limit:Ext.sysd.getPageSize()                }            }*/);        }    }}();//选择记录判断function hasSelected(){    var selectModel = gridMain.getSelectionModel();    var selected = selectModel.hasSelection();    if(!selected)    {        Ext.Msg.alert(Sysd.Msg.AlertTitle,'请先选择一条记录再编辑！');        return false;    }    return true;}//数据检验function confirmBusinessName(){    var groupName = Ext.getCmp("groupName").getValue();    if("" == groupName)    {        Ext.Msg.alert(Sysd.Msg.AlertTitle, "请输入组名！");        return false;    }    return true;}function setCenter(v) {    return "" + v + "";}    function editLevel(){    //发送状态 1成功 0 失败(根据回执判断是否失败)    var arrData = [['0','0'], ['1','1'], ['2', '2'], ['3', '3'], ['4', '4']];    editLevelForm = new Ext.form.FormPanel({        width:200,        height:100,        frame:true,        labelWidth:60,        labelAlign:"right",        buttonAlign:'center',        defaultType:"textfield",        items:[            {id:"businessName", name:"businessName",fieldLabel:"业务应用",width:100,disabled:true},            {fieldWith:60,fieldLabel : "级别",arrData:arrData,xtype:"arrayComboBox",                id : 'smsLevel',name : 'smsLevel',width : 100},                {id:"businessCode", name:"businessCode",hideLabel:true,hidden:true}],        buttons:[{text:"确认",iconCls : 'silk_tick',handler:function(){                    updateLevel();                }},                {text:"取消",iconCls:'silk_cancel',handler:function(){editLevelWin.hide()}}]    });        editLevelWin = new Ext.Window(    {        id:"editLevelWin",        title:"编辑优先级别",        width:210,        height:132,//        autoHeight: true,        resizable:false,        modal:true,        items:[editLevelForm]    });    editLevelWin.on("hide",function(){editLevelWin.destroy()});        editLevelWin.show();}function updateLevel(){    var businessCode = Ext.getCmp("businessCode").getValue();    var smsLevel = Ext.getCmp("smsLevel").getValue();    Ext.Ajax.request({        url : Ext.sysd.getWithToken('/smsAppSetup/updateAppSetup.do'),        method : 'post',        params : {            businessCode:businessCode,            smsLevel:smsLevel        },        success : function(response) {            Ext.Msg.alert(Sysd.Msg.AlertTitle, "保存成功！");//            seqNum = 0;            gridMain.getStore().reload(            /*{                params:                {                    //默认显示第一页记录                    start:0,                    limit:Ext.sysd.getPageSize()                }            }*/);            Ext.getCmp("editLevelWin").close();        },        failure : function(response) {            Ext.Msg.alert(Sysd.Msg.AlertTitle, "保存失败！");        }    });}//时间交错判断function comfirmTimePeriod(){    var timePeriodStartStr="";    var timePeriodEndStr="";    for(var i = 0; i < count; i++)    {        var timeStartCtrl = editTimeForm.getForm().findField("timeStart" + i);        var timeEndCtrl = editTimeForm.getForm().findField("timeEnd" + i);        if(timeStartCtrl)        {            timePeriodStartStr += timeStartCtrl.getValue()+",";            timePeriodEndStr += timeEndCtrl.getValue()+",";        }    }        timePeriodStartStr=timePeriodStartStr.substr(0,timePeriodStartStr.length-1);    timePeriodEndStr=timePeriodEndStr.substr(0,timePeriodEndStr.length-1);        var timePeriodStartArr = timePeriodStartStr.split(',');    var timePeriodEndArr = timePeriodEndStr.split(',');        var periodFlag = false;//默认不存在时间交错情况        for(var i = 0; i< timePeriodStartArr.length; i++)    {        for(var j = 0; j< timePeriodEndArr.length; j++)        {            if(i == j)            {                continue;            }            else            {                if((timePeriodStartArr[j] < timePeriodStartArr[i])&&(timePeriodStartArr[i]
     
       0) {                seqOldValue = arraySep[index1 - 1];                seqCurValue = arraySep[index1];            }            if (allRecs[index1].get(colName) == preValue && (colName == sepCol || seqOldValue == seqCurValue)) {                //alert(colName + "======" + seqOldValue + "======" + seqCurValue);                allRecs[index1].set(colName, " ");                array1[i].push(j);                if (j == count2 - 1) {                    //var index = firstSameCell + Math.round((j + 1 - firstSameCell) / 2 - 1);                    var index = firstSameCell;//首行显示数值                    if (rowOrCol == "row") {                        allRecs[index].set(colName, preValue);                    } else {                        allRecs[index1].set(grid.getColumnModel().getColumnId(index), preValue);                    }                }            } else {                if (j != 0) {                    //var index = firstSameCell + Math.round((j + 1 - firstSameCell) / 2 - 1);                    var index = firstSameCell;//首行显示数值                    if (rowOrCol == "row") {                        allRecs[index].set(colName, preValue);                    } else {                        allRecs[index1].set(grid.getColumnModel().getColumnId(index), preValue);                    }                }                firstSameCell = j;                preValue = allRecs[index1].get(colName);                allRecs[index1].set(colName, " ");                if (j == count2 - 1) {                    allRecs[index1].set(colName, preValue);                }            }        }    }    grid.getStore().commitChanges();    //添加所有分隔线    var rCount = grid.getStore().getCount();    for (i = 0; i < rCount; i ++) {        for (j = 0; j < grid.getColumnModel().getColumnCount(); j ++) {            aRow = grid.getView().getCell(i,j);            if (i == 0) {                aRow.style.borderTop = "none";                aRow.style.borderLeft = "1px solid #ccc";            } else if (i == rCount - 1) {                aRow.style.borderTop = "1px solid #ccc";                aRow.style.borderLeft = "1px solid #ccc";                aRow.style.borderBottom = "1px solid #ccc";            } else {                aRow.style.borderTop = "1px solid #ccc";                aRow.style.borderLeft = "1px solid #ccc";            } if(j == grid.getColumnModel().getColumnCount()-1)                 aRow.style.borderRight = "1px solid #ccc";               if(i == rCount-1)                      aRow.style.borderBottom = "1px solid #ccc";            //aRow.style.borderBottom = "1px solid #ccc";        }    }        //去除合并的单元格的分隔线    for (i = 0; i < array1.length; i++) {        for (j = 0; j < array1[i].length; j++) {            if (rowOrCol == "row") {                aRow = grid.getView().getCell(array1[i][j],i);                aRow.style.borderTop = "none";            } else {                aRow = grid.getView().getCell(i, array1[i][j]);                aRow.style.borderLeft = "none";            }        }    }}Ext.onReady(sms.appSetup.main.init,sms.appSetup.main);