ExtJs Ext.Ajax.request提交实现waitMsg效果

var myMask = new Ext.LoadMask(Ext.getBody(), {msg:"Please wait..."});

myMask.show();

myMask.hide();

简单的示例如下//gp为form表单var gp=Ext.getCmp("deviceInterfereAttachmentsViewGridPanel");
var myMask = new Ext.LoadMask(Ext.getBody(),{msg:"正在导入，请稍等..."});
myMask.show();
Ext.Ajax.request({
url:"deviceAction!importDevInfo.action",
method:"POST",
params:{
id:id
},
success:function(){
myMask.hide();
Ext.Msg.alert("消息","导入成功...");
},
failure:function(){                myMask.hide();
Ext.Msg.alert("消息","导入失败");
}
});