Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. Users have multiple options to choose from, and whenever they change their choice, the event handler in the onChange attribute will be executed to update the component state. PERFORM build_fieldcat CHANGING pt_fieldcat. Question: I am trying to trigger an action method for onchange event for dropdownlist, how can I do this without using jquery onchange. Step 1: Add a