Object.values()
The Object.values()
static method returns an array of a given object's own enumerable string-keyed property values.
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Syntax
Object.values(obj)
Parameters
obj
-
An object.
Return value
An array containing the given object's own enumerable string-keyed property values.
Description
Object.values()
returns an array whose elements are values of enumerable string-keyed properties found directly upon object
. This is the same as iterating with a for...in
loop, except that a for...in
loop enumerates properties in the prototype chain as well. The order of the array returned by Object.values()
is the same as that provided by a for...in
loop.
If you need the property keys, use Object.keys()
instead. If you need both the property keys and values, use Object.entries()
instead.
Examples
Using Object.values()
const obj = { foo: "bar", baz: 42 };
console.log(Object.values(obj)); // ['bar', 42]
// Array-like object
const arrayLikeObj1 = { 0: "a", 1: "b", 2: "c" };
console.log(Object.values(arrayLikeObj1)); // ['a', 'b', 'c']
// Array-like object with random key ordering
// When using numeric keys, the values are returned in the keys' numerical order
const arrayLikeObj2 = { 100: "a", 2: "b", 7: "c" };
console.log(Object.values(arrayLikeObj2)); // ['b', 'c', 'a']
// getFoo is a non-enumerable property
const myObj = Object.create(
{},
{
getFoo: {
value() {
return this.foo;
},
},
},
);
myObj.foo = "bar";
console.log(Object.values(myObj)); // ['bar']
Using Object.values() on primitives
Non-object arguments are coerced to objects. undefined
and null
cannot be coerced to objects and throw a TypeError
upfront. Only strings may have own enumerable properties, while all other primitives return an empty array.
// Strings have indices as enumerable own properties
console.log(Object.values("foo")); // ['f', 'o', 'o']
// Other primitives except undefined and null have no own properties
console.log(Object.values(100)); // []
Specifications
Specification |
---|
ECMAScript Language Specification # sec-object.values |
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