How to set <select> dropdown in oneditprepare?

[cameo69]

You are right. It did not trigger my change handler. And if there is a normal one, probably that did it.

[cameo69]

@ebarrieau

$("#node-input-drop_select").val("drop").trigger("change")

After reading more about it on the internet, it seems using val combined with calling change() is the correct answer. Hence marking it as the solution for future reference.