Question

How to get the first key of an object in JavaScript

Answer 1

let obj = {
    id: 383912,
    name: "Albus Dumbledore",
    academicrank: "Professor"
};
 
for (let key in obj) {
    console.log(key);
    break;
}
 
     
/*
run:
     
id
     
*/

 

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Answer 2

let person = {
    name: "John",
    age: 46,
    city: "New York"
};

const firstKey = Object.keys(person)[0];

console.log(firstKey); 

 
    
/*
run:

name

*/

 

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