ExtJS11：大数据量延时查询，延时旋转遮罩显示

var myMask = new Ext.LoadMask(Ext.getBody(), {

            msg: '正在查询，请稍后...',

            removeMask: true //完成后移除

 });

myMask.show();

Ext.Ajax.request({

            url :  __ctxPath + '/outb/queryWashCusObWashHis.do',

            method : 'post',

    timeout:99999,

    params: { 

    projId : projId,

    comId : comId,

    calllistId : calllistId,

    callbatchId : gcallbatchId,

    clearnTyp : clearnTyp,

    washIFGrid : washIFGrid,

    clearSoundTyp : clearSoundTyp

    },

    success : function(response) {

    var result = Ext.util.JSON.decode(response.responseText);//解析数据

    Ext.getCmp("ObCallListClearnWindowFilterGrid").getStore().removeAll();

    Ext.getCmp("ObCallListClearnWindowFilterGrid").getStore().loadData(result);

    Ext.getCmp('OB_CalllistClear_Btn_Search').setDisabled(false);

             myMask.hide();

    },

    failure : function() {

             myMask.close();

    Ext.ux.Toast.msg('操作提示', '查询超时，请联系管理员！');

    statusBar.hide();

    }

});