Options

Minimum required option to use when you use the combobox binding is dataSource. Here is a list of all options

Option	Default	Function
dataSource	null	You can use a function or array as data source
comboboxTemplate	Built in template	A string that either is a ID for a template or the template itself
rowTemplate	Built in template	A string that either is a ID for a template or the template itself.
valueMember	‘name’	The member to use to output the text for row
pageSize	10	The size of each dropdown page
paging	true	Enable or disable paging
pagingLinks	4	Specifies the number of paging links shown
keyPressSearchTimeout	200 ms	The throttle timeout between keypresses before a request is sent
minimumSearchTextLength	1	The minimum characters required for a request to be performed
placeholder	null	Placeholder text for input field
dropdownItemsArray	New instance	By default the combobox will instance a observableArray for the drop down items. You can instead supply your own if you want to control the items like removing items etc.

You can add default options by calling ko.bindingHandlers.combobox.setDefaults