What happens when you instantiate a new object (1) with a parameter in JavaScript?

Question

What happens when you call:

new Object(1)

When I tried, he returned:

[Number: 1]

I want to understand what is happening there. Any information would be appreciated.

Answer 1

You can see the specification:

When called new Object(arg), we essentially call ToObject(arg).

ToObject defined as

The abstract ToObject operation converts the argument to a value of type Object according to table 13

And the table says:

Number: returns a new Number object whose inner interval is [[NumberData]]set to the value of the argument. See 20.1 for a description of Number objects.

, new Number(1), .. .

---

String, Number Boolean , . , , , .. .

:

Boolean(0); // false
Boolean(new Number(0)); // true

Answer 2

constuctor: http://www.ecma-international.org/ecma-262/5.1/#sec-15.2.2.1

Object , :

• ,
  • Type (value) - Object,
    • ECMAScript, , .
    • -, , , -.
  • Type (value) - String, ToObject ().
  • () , TOObject ().
  • Type (value) - Number, ToObject ().
• Assert: Null Undefined.
• obj - ECMAScript.
• [[Prototype]] obj (15.2.4).
• [[Class]] obj "Object". [[]] obj true.
• obj, 8.12.
• obj.