javascr ipt 写的动态树,里面有两个示例文件一看就会用。-javascr ipt to write the dynamic tree, there are two sample files will be used to see one.

动态加载树，点一个节点时，用ajax到数据库去取该节点的子节点-Dynamic loading tree node points, the use of ajax to the database to fetch the child nodes of the node