Is there a way to create a Dropdown (List) custom field that the user can add a value?

[Bruno Alexandre]

We're trying to add a new custom field to Jira, a "client" field so we can get reports from logged hours per client.

The only logic type is a dropdown list, but for new clients, we would like to be able to write the client name as well if not yet in the list...

We don't like the free text type because from one user to the other, we could misspell the client name.

Is there such a way? 

something like this: http://indrimuska.github.io/jquery-editable-select/

[Jennifer Choban]

You might want to consider using a form instead. It saves you the admin of creating multiple custom fields. ProForma lets you create dropdowns with an "other" option. You can also link the form field through to a Jira field for easy querying/reporting.