To send the form data to the server, call $.post(). by appending Id to column name and value is integer i.e. In the Java Swing API, the LayoutManager interface defines how Container objects can have controlled Component placement. Id of the referring column in another list. One of the more powerful LayoutManager implementations is the GridBagLayout class which requires the use of the GridBagConstraints class to specify how layout control occurs. "Sinc The project is hosted on GitHub, and the annotated source code is available, as well as an online test suite, Now I write these code for resolve the problem: $('#sel') .empty() //empty select .append($("