Is there a method that returns all properties of an object in javascript?

Question

The Object.keys(obj) returns the own enumerable properties of the object this is analogous to Object.hasOwnProperty() which are true. What I am looking for is a function that would give all properties even from the prototype chain

`for in` will loop over every property in the prototype chain. — Jake Holzinger, Jul 20 '17 at 06:16

score 0 · Answer 1 · edited Jul 20 '17 at 06:31

0

Use for ... in to iterate over all properties of an object:

var myObject = {ownProp: 1};

for (let prop in myObject) {
        console.log(prop);
}

edited Jul 20 '17 at 06:31

Chava Geldzahler

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answered Jul 20 '17 at 06:28

Lars Beck

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Thanks, I've used it and created `Object.allKeys = function(o){ var arr = []; for (let prop in o) { arr.push(prop); } return arr; }` hope this is correct. – Neelotpal Jul 20 '17 at 06:53
@Neelotpal Did it work? – Chava Geldzahler Jul 20 '17 at 21:57

score 0 · Answer 2 · answered Jul 20 '17 at 06:44

This question was answered here. There's no built-in method for it.

Bergi's suggestion: (Using .getPrototypeOf() to traverse up the prototype chain and recursively get the properties of every object)

var myObj = {ownProp1:1, ownProp2:2};

function logAllProperties(obj) {
     if (obj == null) return; // recursive approach
     console.log(Object.getOwnPropertyNames(obj));
     logAllProperties(Object.getPrototypeOf(obj));
}
logAllProperties(myObj);

Is there a method that returns all properties of an object in javascript?

2 Answers2