Is there a max number of options (values) in HTML drop down control?

Question

Does anyone know how many options a drop down list can have? Is it unlimited? How many before performance degrades?

Answer 1

Yes, the maximum for Chrome and Safari is 10000 items for select elements at least.

The relevant lines in the Chrome source can be found here: Defined max of 10000, Code that enforces limit and puts error in console

Firefox seems to have no practical limit from my testing.