CODEWITHSUNDEEP
javascriptnode.js
louis
louis

Reputation: 35

Transferring javascript variables from client to server

I am programming a strange script that consists of transferring variables from client to a nodejs server.
So if a have a date variable, how can I transfer it and use the same variable on the server?
Is there any way to serialize objects and retrieve them on server side in a way that they remain the same type (date, function, variable, string, object...)?

Thank you

Upvotes: 1

Views: 1137

Answers (4)

Tauren
Tauren

Reputation: 27235

You might check out DNode in addition to nowjs. I've been watching both of those projects but not dabbled in them yet. However, I get the sense that DNode it is building more traction in the node.js community and I hear praise for it all the time.

https://github.com/substack/dnode http://substack.net/posts/85e1bd/DNode-Asynchronous-Remote-Method-Invocation-for-Node-js-and-the-Browser

Timezones are very important in my application, so I've found that serializing dates to ISO8601 formatted strings for dates works best. @Mike's solution is great if you don't care about timezones, or can assume that all dates are UTC. There are plenty of javascript libraries to help serialize/deserialize ISO8601.

Upvotes: 1

Duncan_m
Duncan_m

Reputation: 2546

Now.js could abstract all of the serialisation, deserialisation.. it provides a shared namespace between node.js server and browser client:

http://nowjs.com/

Upvotes: 1

FK82
FK82

Reputation: 5075

As was posted before me, serialize the Date Object to a string literal, either the value in miliseconds or the formatted Date String.

Use a POST request passing the Date string in the request body or a GET requests passing the string via query parameter to get it to the server. There you may deserialize the string using the Date constructor.

Upvotes: 0

Mike Samuel
Mike Samuel

Reputation: 120506

You can serialize a date by converting it to a number which can be sent via JSON.

new Date(+new Date)

is perfectly valid.

The prefix + in

+new Date

converts the newly created date to a number, and

new Date(myNumber)

reconstitutes a date from a number.

Upvotes: 2

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