The problem with simple tree table plugin is that it works perfectly fine when all the rows including child rows and grandchild rows are preloaded , which consumes some space , especially when the child rows are not even demanded by the users (but still it exists in the memory ) , so what I want is the collapse and expand(of child rows) feature of simple. tree.table.js but the child rows are only loaded when it is demanded , that is when users explicitly clicks on the parent rows .