countKeys

The countKeys() method counts the number of an object's keys while ignoring internal keys.

Interactive example

Syntax

function countKeys<
	GenericObject extends object
>(
	object: GenericObject
): number

Parameters

• object: The object whose keys you want to count.

Return value

The number of the object's keys, excluding internal keys.

See also

• keys - Returns an array of an object's keys
• values - Returns an array of an object's values
• entries - Returns an array of key-value pairs

Sources

• MDN Web Docs - Object.keys()