Key value datastructure in JavaScript

I have a google map where user places markers at various locations. I show a jquery dialog on click event which has a form, where user will fill other details pertaining to the marker. Now i need to make this data persist:

1] I need to store the markers ( along with the details ) to a hidden field of a form, so my server can parse it and populate the database. Something on the line of:

markerData = JSON.stringify($('#dialog' + markerId).serializeObject()); // the form
.. add the markerData with key as markerId to a global javascript variable ..
$('#markersList').val( JSON.stringify("the global var"));

Note: $('#dialog' + markerId) will uniquely identify the markers dialog(which has the form)

2] I need to retrieve the values from the database and form the string that will be placed in the hidden field. This is required for the edit/view page.

Basically i need a datastructure(key/value) in javascript where markerId is the key and the form elements are the values, AND i need a way to convert all the values in a format parsable by server (via hidden开发者_运维技巧 field) and vice versa.

What about:

var keyValuePairs = [{ "key1": "value1" }, { "keyN": "valueN" }];
alert(keyValuePairs["key1"]);

Or just:

var keyValuePairs = {};
keyValuePairs["key1"] = "value1";
keyValueParis["keyN"] = "value2";
alert(keyValuePairs["key1"]);

UPDATE: If you want to post this associative array as JSON in a hidden field, just stringify the array with the JSON library of your choice and set JSON text to the whole hidden field.

All objects in javascript are key/value pairs. What else do you need? You can have it like that:

Define a variable

var userInput = {}

as soon as for given markerId you have formElements specified, just do

userInput[markerId] = formElements

It is the same as if you'd have a concrete Id when writing your code (say Id1) and write

userInput.Id1 = formElements

So after that you have userInput object with property names equal to your ids (keys), and values equal to user defined form elements - exactly what you need, right?