var example = { foo1: { /* stuff1 */}, foo2: { /* stuff2 */}, foo3: { /* stuff3 */} }; let [first] = Object.keys(example) console.log(first)
var obj = { first: 'someVal' }; obj[Object.keys(obj)[0]]; //returns 'someVal'
var person = { 'first_name': 'Johny', 'last_name':'Carson' }; var firstName=person[Object.keys(person)[0]]; //get first value of object :'Johny'