Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.javascript > #37258

Re: Object equals other object

Show all headers | View raw

Andrew Poulos <ap_prog@hotmail.com> wrote on 16 Sep 2019 in
comp.lang.javascript: 

> If I have
> 
> let a = { "c": 1 },
>      b = { "c": 1 };
> 
> then
> 
> console.log(a === b); // false.
> 
> My question is, why was it decided that JavaScript is to return false 
> even if the two objects have the same number of properties, all the 
> properties are named the same, and all the properties values are
> identical? 

Two DIFFERENT objects can never "be" the same.


However, the SAME object can be assigned different names:

let a = { 'c': 1 };
let d = a;
console.log(a === d); // true
console.log(a.c, d.c) // 1 1

a.c = 2;
console.log(a === d); // true
console.log(a.c, d.c) // 2 2


-- 
Evertjan.
The Netherlands.
(Please change the x'es to dots in my emailaddress)

Back to comp.lang.javascript | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Object equals other object Andrew Poulos <ap_prog@hotmail.com> - 2019-09-16 12:44 +1000
  Re: Object equals other object "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2019-09-16 09:00 +0200
    Re: Object equals other object Andrew Poulos <ap_prog@hotmail.com> - 2019-09-16 18:30 +1000
      Re: Object equals other object Julio Di Egidio <julio@diegidio.name> - 2019-09-16 02:01 -0700
        Re: Object equals other object Andrew Poulos <ap_prog@hotmail.com> - 2019-09-16 19:39 +1000
        Re: Object equals other object John G Harris <niam@jghnorth.org.uk.invalid> - 2019-09-16 18:29 +0100
      Re: Object equals other object John G Harris <niam@jghnorth.org.uk.invalid> - 2019-09-16 10:04 +0100
        Re: Object equals other object Julio Di Egidio <julio@diegidio.name> - 2019-09-16 02:21 -0700
          Re: Object equals other object John G Harris <niam@jghnorth.org.uk.invalid> - 2019-09-16 18:39 +0100
          Re: Object equals other object Arno Welzel <usenet@arnowelzel.de> - 2019-09-17 10:45 +0200
      Re: Object equals other object Arno Welzel <usenet@arnowelzel.de> - 2019-09-16 11:49 +0200
        Re: Object equals other object Julio Di Egidio <julio@diegidio.name> - 2019-09-16 02:54 -0700
          Re: Object equals other object Arno Welzel <usenet@arnowelzel.de> - 2019-09-16 11:56 +0200
            Re: Object equals other object Julio Di Egidio <julio@diegidio.name> - 2019-09-16 03:09 -0700
              Re: Object equals other object Arno Welzel <usenet@arnowelzel.de> - 2019-09-16 13:47 +0200
                Re: Object equals other object Jon Ribbens <jon+usenet@unequivocal.eu> - 2019-09-16 13:43 +0000
  Re: Object equals other object Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2019-09-17 00:53 +0200
    Re: Object equals other object Jon Ribbens <jon+usenet@unequivocal.eu> - 2019-09-16 23:03 +0000
      Re: Object equals other object "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2019-09-17 16:16 +0200
        Re: Object equals other object Arno Welzel <usenet@arnowelzel.de> - 2019-09-17 16:57 +0200
      Re: Object equals other object Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2019-09-17 16:58 +0200
        Re: Object equals other object Jon Ribbens <jon+usenet@unequivocal.eu> - 2019-09-17 16:31 +0000
        Re: Object equals other object Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2019-11-30 04:38 +0100
    Re: Object equals other object John G Harris <niam@jghnorth.org.uk.invalid> - 2019-09-17 18:46 +0100

csiph-web