How can I add or remove options in JQuery UI Multiselect ? I am initializing the multiselect on page load and I need to remove existing values and add new values based on anothe
For that one you could just destroy and reinitialize after changing...
$("#multipleselectboxId").append(toAppend).multiselect("destroy").multiselect();
There's also another plugin with a refresh function: EricHynds's Multiselect
$("#multipleselectboxId").append(toAppend).multiselect("refresh");