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

Groups > comp.lang.javascript > #32231 > unrolled thread

Javascript save and load "records"

Back to article view | Back to comp.lang.javascript

Contents

  Javascript save and load "records" jonas.thornvall@gmail.com - 2017-01-21 02:33 -0800
    Re: Javascript save and load "records" "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2017-01-21 14:50 -0800
      Re: Javascript save and load "records" jonas.thornvall@gmail.com - 2017-01-23 02:42 -0800

#32231 — Javascript save and load "records"

I found some code that both can load and save text and pictures.

But i would like some advice on how to save it like a record "format the data".

I have an array with nodes they certain properties like nodeindex, linkarray, color, position(x,y) etc

Should i just make a string of each entrance and separate with a newline?

function makeNodes()
{
   for (var m = 0; m <= nodes; m ++ )
   {
      arr[m] ={nodeindex : 0, nroflinks : 0, nodelinks : [], hold : false, rposX : 0, rposY : 0, rwidth : 10, rheigth : 10, rcolor : "red" , bcolor : "green"};
   }
   return arr;
}

It seem arrays can be extracted to comma separated strings.
I guess there is nothing like a record in javascript just data types, so you have to format yourself? Will newline do for each entry?

Or is there something like a binary datatype that could be saved? I always go with the easiest option my guess it that a text string is easier to save and load back to the array?

JT

[toc] | [next] | [standalone]

#32243

On Saturday, January 21, 2017 at 4:33:17 AM UTC-6, jonas.t...@gmail.com wrote:
> I found some code that both can load and save text and pictures.
> 
> But i would like some advice on how to save it like a record "format the data".
> 
> I have an array with nodes they certain properties like nodeindex, linkarray, color, position(x,y) etc
> 
> Should i just make a string of each entrance and separate with a newline?
> 
> function makeNodes()
> {
>    for (var m = 0; m <= nodes; m ++ )
>    {
>       arr[m] ={nodeindex : 0, nroflinks : 0, nodelinks : [], hold : false, rposX : 0, rposY : 0, rwidth : 10, rheigth : 10, rcolor : "red" , bcolor : "green"};
>    }
>    return arr;
> }
> 
> It seem arrays can be extracted to comma separated strings.
> I guess there is nothing like a record in javascript just data types, so you have to format yourself? Will newline do for each entry?
> 
> Or is there something like a binary datatype that could be saved? I always go with the easiest option my guess it that a text string is easier to save and load back to the array?

A record is simply a data structure that can be represented as a JavaScript object. Saving the data is a different matter depending on a particular use case (server vs. client. domain vs non-domain specific, etc...)

[toc] | [prev] | [next] | [standalone]

#32262

Den lördag 21 januari 2017 kl. 23:50:39 UTC+1 skrev Michael Haufe (TNO):
> On Saturday, January 21, 2017 at 4:33:17 AM UTC-6, jonas.t...@gmail.com wrote:
> > I found some code that both can load and save text and pictures.
> > 
> > But i would like some advice on how to save it like a record "format the data".
> > 
> > I have an array with nodes they certain properties like nodeindex, linkarray, color, position(x,y) etc
> > 
> > Should i just make a string of each entrance and separate with a newline?
> > 
> > function makeNodes()
> > {
> >    for (var m = 0; m <= nodes; m ++ )
> >    {
> >       arr[m] ={nodeindex : 0, nroflinks : 0, nodelinks : [], hold : false, rposX : 0, rposY : 0, rwidth : 10, rheigth : 10, rcolor : "red" , bcolor : "green"};
> >    }
> >    return arr;
> > }
> > 
> > It seem arrays can be extracted to comma separated strings.
> > I guess there is nothing like a record in javascript just data types, so you have to format yourself? Will newline do for each entry?
> > 
> > Or is there something like a binary datatype that could be saved? I always go with the easiest option my guess it that a text string is easier to save and load back to the array?
> 
> A record is simply a data structure that can be represented as a JavaScript object. Saving the data is a different matter depending on a particular use case (server vs. client. domain vs non-domain specific, etc...)

Well i just work with local files at my harddrive i was pleasantly surprised that i can both load and save text and pictures using Javascript, how long has browsers had this feature with javascript?

But i do remember the Cobol days when you simply defined a record, that you could load, save and update without knowing anything about it's structure or datatypes once you defined them. I don't know about the storage structure of the savefiles and how it was indexed but  the records could be retrieved rather fast. 

That would be a nice feature, well of course there is PHP, ASP and databaseconnectivity. But it seem a bit overkill sometimes.

Well maybe it is security measures of our time, i guess the minicomputer, mainframe environment with terminals wasn't exactly open to hackers by other means than telnet and modems.

[toc] | [prev] | [standalone]

Back to top | Article view | comp.lang.javascript

csiph-web