Standard is to have one line that opens up to more than one line (variable) where the first line, if default, is something like "Choose a station." The default value must be an entry with a blank 'value' so the error message is displayed when they have not chosen a station. But since the select initial value comes from local storage, we need a test for blank that sets the select value to the default on no stored data.
When testing be sure to clear local data storage. (F12->Application->Local Storage->File://)
Standard is to have one line that opens up to more than one line (variable) where the first line, if default, is something like "Choose a station." The default value must be an entry with a blank 'value' so the error message is displayed when they have not chosen a station. But since the select initial value comes from local storage, we need a test for blank that sets the select value to the default on no stored data.
When testing be sure to clear local data storage. (F12->Application->Local Storage->File://)