Ext2一些琐碎的知识点

var store = theGrid.getStore();
var args = store.baseParams;

//ext2生成store

var newStore = new Ext.data.Store({
        fields: fields,
        type: 'ajax',
        url: SRM_CONTEXT + '/mdm/code/code!selectCodeInfoByCond4custom.action',
        baseParams: {  //传递参数
            "cond.tablecode": tablecode,
            "cond.auditflag": args["cond.auditflag"],
            "cond.querytype": "query",
            "cond.specialcode": args["cond.specialcode"],
            "cond.dydh": args["cond.dydh"],
            "cond.freezepage": args["cond.freezepage"]
        },
        pageSize:50,
        reader: new Ext.data.JsonReader({ //reader里的参数
            type: 'json',
            root: 'extendBeans',
            totalProperty: 'extendBeans_num',
            fields : fields
       }),

        autoDestroy: true,
        autoLoad:true
    });
    //更新并重构grid

    //这块我需要重新生成新的grid，只更换它的列和store，reconfigure()方法刚好满足我的需求
    theGrid.reconfigure(newStore,  new Ext.grid.ColumnModel(columns));
    theGrid.extcolumns=columns;  //重新放入列
    //绑定新store，解决分页问题
    theGrid.bottomToolbar.bind(newStore); //这块ext2的方法里面处理的不好，未封装完成，需手动处理bbar
    //解决快捷查询问题
    var header = Ext.getDom(theGrid.getId()+'SearchHeader');  //快捷查询需重置
    header.style.display = "inline";
    theGrid.syncSize();