使用json中的键填充select

I have an array with an object in it, this is returned to the client through node.js server running with mongodb. I want to select all keys/fields in object(i.e. name, surname, telephone) but not their values(i.e i just want "name" string and not "some name" value), and then to populate those keys in a select menu using jquery.I have an array with an object in it, this is r