how to get the first key in object javascript code example

Example 1: js get first object value

var obj = { first: 'someVal' };
obj[Object.keys(obj)[0]]; //returns 'someVal'

Example 2: get first object key javascript

var example = {
    foo1: { /* stuff1 */},
    foo2: { /* stuff2 */},
    foo3: { /* stuff3 */}
};

let [first] = Object.keys(example)

console.log(first)