keys
INFO
This function is only available in es-toolkit/compat
for compatibility reasons. It either has alternative native JavaScript APIs or isn’t fully optimized yet.
When imported from es-toolkit/compat
, it behaves exactly like lodash and provides the same functionalities, as detailed here.
Creates an array of the own enumerable property names of object
.
Non-object values are coerced to objects.
Signature
typescript
function keys(object?: any): string[];
Parameters
object
(object
): The object to query.
Returns
(string[]
): Returns the array of property names.
Examples
typescript
function Foo() {
this.a = 1;
this.b = 2;
}
Foo.prototype.c = 3;
keys(new Foo()); // ['a', 'b'] (iteration order is not guaranteed)
keys('hi'); // ['0', '1']
keys([1, 2, 3]); // ['0', '1', '2']
keys({ a: 1, b: 2 }); // ['a', 'b']