Object.classPrototype.toNumber

Instance of

Function

Return value

/*Number*/

Description

Converts object to number:

• from String (parses the string as number)
• from Array (returns length of the array)
• from Boolean (returns 1 if true and 0 otherwise)
• from other types (if not default toNumber method exists, calls it, otherwise returns the number of properties not including prototype property)

Example

console.write("12.1e1".toNumber(), " ", false.toNumber());

Expected output

121 0