Extjs 遮罩

1. 图片

var globalMask = new Ext.LoadMask(  Ext.getBody(), {msg:"<div class=\"maskcls\"><img src='<%=rootPath%>/images/waiting.gif'></img></div>"});

2. 文字

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

调用

//显示
globalMask.show();
//隐藏
globalMask.hide();