jQuery Editable Combobox is a jQuery function that allows you to transform any <select> tag into editable combobox. This is done by adding a new <option> element to carry the value entered by the keyboard. This will only work on select elements. Any other elements this function will be applied to will be ignored.
<select>
<option>
Just import plugin file after importing the jQuery library and you’re set.
$(elements).editableCombobox([options])
options
position
classes
styles
pluginClass
ignoredKeys
acceptedRanges