Returns the names of the enumerable string properties and methods of an object. (Note: This is just a typed wrapper around the native Object.keys method)
Type of the keys that composed the source.
source
Object that contains the properties and methods. This can be an object that you created or an existing Document Object Model (DOM) object.
An array of keys.
Returns the names of the enumerable string properties and methods of an object. (Note: This is just a typed wrapper around the native Object.keys method)