storing data in javascript

Question

I want to iterate through a database and store the information as an array or object. I don't really care which as long as I can store and retrieve based on a key. I need guidence on the syntax to use to create and store data in javascript

// create storageEntity as array or objects

storageEntity = {};
storageEntity = [];

// on each retreival from data base store data in "storageEntity" // conceptually it should look like this:

storageEntity[recordIFromFile][recordType][dataType] = value

where:

recordIFromFile - is an numeric value from file
recordType - is a string from file
dataType - is a string from file
value - is a numeric value from the file

Nicolas78 · Accepted Answer · 2011-12-25 20:19:35Z

1

You want to use an object/dictionary, i.e.

var storageEntity = {};

If your ID is 99999, you'd need 99998 empty entries in an array, I guess this isn't what you want. Now if you want to store a piece of data:

var record = storageEntity[recordIFromFile];
if (record == undefined) {
  record = {};
  storageEntity[recordIFromFile] = record;
}

var byType = record[recordType];
if (byType == undefined) {
  byType = {};
  record[recordType] = byType;
}
byType[dataType] = value;

answered Dec 25, 2011 at 20:19

Nicolas78

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AlfredoVR · Accepted Answer · 2011-12-25 20:13:53Z

0

Why can't you just request a JSON from your server and work over that instead?

answered Dec 25, 2011 at 20:13

AlfredoVR

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3 Comments

Mustapha George Over a year ago

actually data comes from server, gets placed on page, then I use jquery to selectively lift values to update back to server.

AlfredoVR Over a year ago

That's not good, request JSON, make the table with jquery, not the other way around.

Mustapha George Over a year ago

Your advice is interesting, but has not much to do with the question. Data is added to page via two different asynchronous data feeds and user input. Be careful trying to throw the same solution at every problem.

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