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Groups > comp.lang.javascript > #23531

Re: arr.push(obj);

Newsgroups comp.lang.javascript
Date 2014-03-11 10:51 -0700
References (2 earlier) <868d8999-f1b7-49bb-a33c-4e76b00ecafa@googlegroups.com> <XnsA2ED8F0737DBBeejj99@194.109.133.133> <fbd15953-edfd-4456-b4c8-7b31417ecd24@googlegroups.com> <XnsA2EDA6E3485F7eejj99@194.109.133.133> <253eca00-abda-47da-8388-8a621f36fffd@googlegroups.com>
Message-ID <59661127-bbd4-4eb5-b824-1b4074ccfbd9@googlegroups.com> (permalink)
Subject Re: arr.push(obj);
From jonas.thornvall@gmail.com

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Den tisdagen den 11:e mars 2014 kl. 18:40:51 UTC+1 skrev jonas.t...@gmail.com:
> Den tisdagen den 11:e mars 2014 kl. 16:24:20 UTC+1 skrev Evertjan.:
> 
> > jonas.thornvall@gmail.com wrote on 11 mrt 2014 in comp.lang.javascript:
> 
> > 
> 
> > 
> 
> > 
> 
> > >> That is impossible. Arrays have no negative indexes, see above.
> 
> > 
> 
> > > Well i showed you it can be done, was i just lucky??????
> 
> > 
> 
> > 
> 
> > 
> 
> > No it cannot be done and [so] you did not show me.
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> > 
> 
> > 
> 
> > 
> 
> > You are just extremely unlucky not comprehending this yet.
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> > 
> 
> > 
> 
> > 
> 
> > The thing we call an index of an array can only be a non negative integer.
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> > 
> 
> > 
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> > 
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> > All kind of array-functions expect of an array where the elements have 
> 
> > 
> 
> > numeric order within these confines.
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> > 
> 
> > 
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> > 
> 
> > for instance, how would you reverse a group of elements with no order,
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> > 
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> > or join them sequencially without order?
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> > 
> 
> > 
> 
> > 
> 
> > ============== some array functions =========================
> 
> > 
> 
> > length  returns the highest index + 1
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> > 
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> > 
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> > 
> 
> > join()  joins all elements of an array into a string
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> > 
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> > 
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> > 
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> > lastIndexOf()	 searches the array for an element, starting at the end, 
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> > 
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> >        and returns its position
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> > 
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> > 
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> > 
> 
> > pop()  Removes the last element of an array, and returns that element
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> > 
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> > 
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> > 
> 
> > push() Adds new elements to the end of an array, 
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> > 
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> >        and returns the new length
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> > 
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> > 
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> > 
> 
> > reverse()  Reverses the order of the elements in an array
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> > 
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> > 
> 
> > 
> 
> > shift()  Removes the first element of an array, and returns that element
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> > 
> 
> > 
> 
> > 
> 
> > slice()  Selects a part of an array, and returns the new array
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> > 
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> > 
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> > 
> 
> > splice()  Adds/Removes elements from an array
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> > 
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> > 
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> > 
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> > unshift()  Adds new elements to the beginning of an array, 
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> > 
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> >            and returns the new length
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> > 
> 
> > ========================================
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> > 
> 
> > 
> 
> > 
> 
> > Now an object can have keys, they are NOT called indexes:
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> > 
> 
> > 
> 
> > 
> 
> > var obj = {};
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> > 
> 
> > 
> 
> > 
> 
> > obj[1]
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> > 
> 
> > obj[-1]
> 
> > 
> 
> > obj[-7.555]
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> > 
> 
> > obj['foo']
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> > 
> 
> > 
> 
> > 
> 
> > but you cannot use any of the above functions,
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> > 
> 
> > as long as it is not an array too, 
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> > 
> 
> > defined with
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> > 
> 
> > 
> 
> > 
> 
> > var obj = [];
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> > 
> 
> > 
> 
> > 
> 
> > and even then obj[1] will be the only array element,
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> > 
> 
> > so obj.length will be 2.
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> > 
> 
> > 
> 
> > 
> 
> > =============================================
> 
> > 
> 
> > 
> 
> > 
> 
> > Synopsis:
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> > 
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> > 
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> > 
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> > An array is not the same as an object.
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> > 
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> > 
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> > 
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> > The elements of an array are indicated by their index.
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> > 
> 
> > An array cannot have other indexes than non-negative integers.
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> > 
> 
> > The elements of an array have order.
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> > 
> 
> > This order makes most of the above functions possible.
> 
> > 
> 
> > 
> 
> > 
> 
> > An object's elements are indicated by a key,
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> > 
> 
> > this can be any string or even a number the probably will be converted to a 
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> > 
> 
> > string.
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> > 
> 
> > The elements of an object have no order.
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> > 
> 
> > 
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> > 
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> > However an array is also an object, so can have elements indicated by an 
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> > 
> 
> > index, and additionally elements that are indicated by keys.
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> > 
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> > 
> 
> > 
> 
> > An object not defined as an array is not an array.
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> > 
> 
> > 
> 
> > 
> 
> > =======================================
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> > 
> 
> > 
> 
> > 
> 
> > Do you still hold that an array can have negative index values?
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> > 
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> > 
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> > 
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> > 
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> > 
> 
> 
> 
> 
> 
> Please man just run the code.
> 
> 1.It is an array? I answer yes to that.
> 
> 2.The numbers i put into arr represent indexes not keys? I answer yes to that. 
> 
> 2.It reach the values stored at the negative values of index? I answer yes to that.
> 
> 
> 
> By the way I run firefox.
> 
> 
> 
> <script type="text/javascript">
> 
> var arr=[];
> 
> for (i=10;i>=-20;i--) {arr[i]=i;}
> 
> arr[-22]=-22;
> 
> for (i=10;i>=-22;i--) {document.write(arr[i],",");}
> 
> </script>
I do not need length or any attribute of array it implicit in my code, but i do need objects or multidimensional arrays that can store strings, ***at negative indexes.*** 

I showed you that the array will store values at negative indexes.
So my question remains can i set also objects not only values at the negative indexes of an array.

And how do i achieve that. 

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Thread

arr.push(obj); jonas.thornvall@gmail.com - 2014-03-10 17:38 -0700
  Re: arr.push(obj); jonas.thornvall@gmail.com - 2014-03-10 20:19 -0700
    Re: arr.push(obj); jonas.thornvall@gmail.com - 2014-03-10 20:28 -0700
      Re: arr.push(obj); jonas.thornvall@gmail.com - 2014-03-10 21:19 -0700
        Re: arr.push(obj); Joao Rodrigues <groups_jr-1@yahoo.com.br> - 2014-03-11 06:59 -0300
          Re: arr.push(obj); Christoph Michael Becker <cmbecker69@arcor.de> - 2014-03-11 16:02 +0100
            Re: arr.push(obj); Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-03-11 16:22 +0000
            Re: arr.push(obj); Joao Rodrigues <groups_jr-1@yahoo.com.br> - 2014-03-11 13:32 -0300
  Re: arr.push(obj); "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2014-03-11 10:21 +0100
    Re: arr.push(obj); jonas.thornvall@gmail.com - 2014-03-11 03:53 -0700
      Re: arr.push(obj); "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2014-03-11 14:03 +0100
        Re: arr.push(obj); jonas.thornvall@gmail.com - 2014-03-11 07:45 -0700
          Re: arr.push(obj); "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2014-03-11 16:24 +0100
            Re: arr.push(obj); jonas.thornvall@gmail.com - 2014-03-11 10:40 -0700
              Re: arr.push(obj); jonas.thornvall@gmail.com - 2014-03-11 10:51 -0700
                Re: arr.push(obj); Christoph Michael Becker <cmbecker69@arcor.de> - 2014-03-11 19:23 +0100
                Re: arr.push(obj); jonas.thornvall@gmail.com - 2014-03-11 15:33 -0700
                Re: arr.push(obj); "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2014-03-12 00:37 +0100
                Re: arr.push(obj); jonas.thornvall@gmail.com - 2014-03-11 16:46 -0700
                Re: arr.push(obj); "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2014-03-12 01:05 +0100
                Re: arr.push(obj); Christoph Michael Becker <cmbecker69@arcor.de> - 2014-03-12 01:40 +0100
                Re: arr.push(obj); Christoph Michael Becker <cmbecker69@arcor.de> - 2014-03-12 00:48 +0100
                Re: arr.push(obj); jonas.thornvall@gmail.com - 2014-03-11 15:43 -0700
                Re: arr.push(obj); jonas.thornvall@gmail.com - 2014-03-11 16:18 -0700
                Re: arr.push(obj); "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2014-03-12 00:39 +0100
                Re: arr.push(obj); Christoph Michael Becker <cmbecker69@arcor.de> - 2014-03-12 00:52 +0100
                Re: arr.push(obj); Christoph Michael Becker <cmbecker69@arcor.de> - 2014-03-12 00:49 +0100
                Re: arr.push(obj); jonas.thornvall@gmail.com - 2014-03-11 17:16 -0700
                Re: arr.push(obj); Christoph Michael Becker <cmbecker69@arcor.de> - 2014-03-12 02:07 +0100
                Re: arr.push(obj); jonas.thornvall@gmail.com - 2014-03-11 18:13 -0700
                Re: arr.push(obj); Christoph Michael Becker <cmbecker69@arcor.de> - 2014-03-13 02:25 +0100
                Re: arr.push(obj); Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-03-13 11:03 +0100
                Re: arr.push(obj); jonas.thornvall@gmail.com - 2014-03-12 07:46 -0700
                Re: arr.push(obj); Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-03-12 01:27 +0100
                Re: arr.push(obj); Christoph Michael Becker <cmbecker69@arcor.de> - 2014-03-12 01:44 +0100
          Re: arr.push(obj); Christoph Michael Becker <cmbecker69@arcor.de> - 2014-03-11 16:26 +0100
            Re: arr.push(obj); Carlos Pedro <carlospedr@gmail.com> - 2014-03-11 09:21 -0700
            Re: arr.push(obj); Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-03-11 18:01 +0100
              Re: arr.push(obj); Christoph Michael Becker <cmbecker69@arcor.de> - 2014-03-11 19:15 +0100
                Re: arr.push(obj); Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-03-11 20:32 +0100
                Re: arr.push(obj); Christoph Michael Becker <cmbecker69@arcor.de> - 2014-03-12 01:01 +0100
                Re: arr.push(obj); Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-03-12 04:08 +0100
                Re: arr.push(obj); Christoph Michael Becker <cmbecker69@arcor.de> - 2014-03-12 18:00 +0100
  Re: arr.push(obj); Joao Rodrigues <groups_jr-1@yahoo.com.br> - 2014-03-11 06:24 -0300
    Re: arr.push(obj); jonas.thornvall@gmail.com - 2014-03-11 03:47 -0700
      Re: arr.push(obj); Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-03-11 15:19 +0000

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