I have a list in Sharepoint Online, which has a lookup to an other list. No matter what, on the form it will always render as a dropdown value. When this list of values becomes huge, it's hard to find the correct item in the dropdown.
Therefore I want to implement something like this: http://jqueryui.com/autocomplete/#combobox
This will allow to type in the lookup field and find the correct item easily. Is this possible and how can I implement this?