Question

I am currently trying to store JSON stringified objects into an array so I will be able to add new elements as I go along:

function GetAllPatients(){
var patient = null;
var patients = [];


patient = { "FirstName": "Stephanie", "Gender": "Female", "Id": "P8401", "LastName": "BARRON", "Title": "Ms", "ConsultantId": "d10", "CurrentWardAdmissionName": "Non Admitted", "DOB": "/Date(1187650800000+0100)/", "HospitalAdmissionDate": "/Date(1294848066000+0000)/", "NHSNumber": "4646399561" };


patient = { "FirstName": "Joan", "Gender": "Female", "Id": "50434619", "LastName": "SMITH", "Title": "Mrs", "ConsultantId": "d1", "CurrentWardAdmissionName": "Non Admitted", "DOB": "/Date(513039600000+0100)/", "HospitalAdmissionDate": "/Date(1332242252817+0000)/", "NHSNumber": "9999999999" };

}

and also a switch case getPatientFromStore(pid) function which will retrieve a record by pid

How would I go about achieving this?
Is there any more information which I would require to help get me closer to a solution?

Basically, I’m in the middle of creating a web application which will allow offline local storage at a disconnected state, and also sync with a database on the server.

Answer 1

You can insert elements into an array by using push:

For example:

patients.push({
    "FirstName": "Stephanie",
    "Gender": "Female",
    "Id": "P8401",
    "LastName": "BARRON",
    "Title": "Ms",
    "ConsultantId": "d10",
    "CurrentWardAdmissionName": "Non Admitted",
    "DOB": "/Date(1187650800000+0100)/",
    "HospitalAdmissionDate": "/Date(1294848066000+0000)/",
    "NHSNumber": "4646399561"
});

As far as looking up by id, rather than an array, it would be better to use an associative array, like so:

var patients = {};
function addPatient(patient) {
    patients[patient.id] = patient;
}

Then in your method to return a patient given the patient’s id, you can do:

function getPatient(id) {
    return patients[id];
}

This is useful if you’re going to be looking up patients by their id all the time.