当项目中需要一个部门人员选择或者省市县地域连选时,就需要树形结构的连选. 再此,写了一个简单的树形结构三连选功能,模拟从后台读取数据和处理数据(欢迎大家交流指正). 代码如下: 循环创建三棵树,其中只有第一棵树有数据,并从后台读取. var root = new Array(); var tree = new Array(); var loader = new Ext.tree.TreeLoader({ dataUrl: 'datatree.aspx' }) for (var i = 0; i
1.主要思想:根据已有数据,规则性的造数据 select * FROM(select lId,strName,lId as lParentId,-1 as orderIdx from tbClassify WHERE lParentId = 0 UNION ALL(select t1.* from tbClassify t1 join(select lId from tbClassify where lParentId=0 order by orderIdx) t2 ont1.lParentI