Object.values() Method

This week I'm tackling Object.values(), which is fairly straightforward. When you run Object.values() against a data object, the method returns an array of the object's property values.

const person = {  name: "Joey",  age: 31,  occupation: "Web Developer",  location: "Austin, Texas",  hungry: true,};
const attributes = Object.values(person);console.log(attributes);// expected output:// ["Joey", 31, "Web Developer", "Austin, Texas", true]

The Object.values() method gives us a way to unpack the contents of a box in an orderly fashion.

The above code produces the same result as this for...in loop:

const attributesArray = [];
for (const attribute in person) {  attributesArray.push(person[attribute]);}console.log(attributesArray);// expected output:// ["Joey", 31, "Web Developer", "Austin, Texas", true]

One little gotcha to be aware of is that if the keys are numeric, Object.values() will output the items in the numeric order of the keys.

const obj = {  5: "Giraffe",  70: "Octopus",  17: "Lion",  1: "Armadillo",  0: "Puffin",};
const objValues = Object.values(obj);console.log(objValues);// expected output:// ["Puffin", "Armadillo", "Giraffe", "Lion", "Octopus"]

Lastly, if you run Object.values() against a simple array, all you get is a copy of the array:

const colors = ["red", "orange", "yellow", "green", "blue", "violet"];
const objValues = Object.values(colors);console.log(objValues);// expected output:// ["red", "orange", "yellow", "green", "blue", "violet"]

From MDN: The Object.values() method returns an array of a given object's own enumerable property values, in the same order as that provided by a for...in loop (the difference being that a for...in loop enumerates properties in the prototype chain as well).

See more examples and documentation here.