To lazy load the data for the expanded tree node I need to fire an Ajax request to a PHP file which gives me the answer as a JSON stream. In the example I'm trying out this PHP file only delivers one string (with 'echo'), but what do I have to do if I need to loop through a database recordset. Can I 'echo' every partial answer to my lazy loading treeview as I get it from the database or do I need to collect the complete answer inside the PHP file in a string variable and send it only when it's complete?
I hope you understand my question.
Thanks for any answer or advice in advance.