Menu
({}).toString.call(Number.prototype) === "[object Number]"
The Number prototype object is itself a Number object (its [[Class]] is "Number") whose value is +0.
Why would it be useful for Number.prototype to be a Number? (the same goes for every other built-in prototype which has the [[Class]] set to not Object)
I'm picking on Number.prototype specifically because I can imagine sensible legacy reasons for Array.prototype and Date.prototype.
363
Definition and Usage. prototype allows you to add new properties and methods to numbers. prototype is a property available with all JavaScript objects.
Javascript Number() Function object: This parameter holds the objects that will be converted any type of javascript variable to number type. Return Values: Number() function returns the number format for any type of javascript variable. Example 2: Not a number is returned by the compiler.
The toString() method in Javascript is used with a number and converts the number to a string. It is used to return a string representing the specified Number object. The toString() method is used with a number num as shown in the above syntax using the '.
Number is a primitive wrapper object used to represent and manipulate numbers like 37 or -9.25 . The Number constructor contains constants and methods for working with numbers.
In general, Constructor.prototype is an exemplar of the "type" defined by Constructor. Although things seem to get hairy for immutable primitives, and especially once you involve the boxing stuff, this exemplar concept still makes sense, with 0 being the "exemplar" of Number.
52
The Number prototype object is itself a Number object (its [[Class]] is "Number") whose value is +0
Why wouldn't Number.prototype be a Number object? Its [[Prototype]] is Object.prototype, so it still inherits from Object.
37
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
