Ext.lib.Ajax.request( 'POST', '/Index/mainIndex', { success: function (data) { data.responseText = "{pros:" + data.responseText + "}"; //获取后台回调的省份城市JSON格式数据 var response = Ext.util.JSON.decode(data.responseText); var province = new Ext.XTemplate( '<tpl for="pros">',//遍历读取pros '<p>{id}--{text}</p>', '<tpl for="children">',//遍历读取pros下的children '<p style="margin-left:10px;">{id}--{text}</p>', '</tpl>', '</tpl>' ); province.compile(); province.append("Div2", response); } } );