const person = {
    name: 'labib',
    age: 22,
    job: 'web-developer',
    frieds: ['ahsik', 'abir', 'alvi', 'hanafi'],
    childList: {
        firstChild: 'Salman',
        secondChild: 'Rafi',
        thirdChild: 'Anfi'
    }
}
const getKeys = Object.keys(person); //use keys method on object
console.log(getKeys)
//Expected output:
//[ 'name', 'age', 'job', 'frieds', 'childList' ]