====Javascript/Digital Signage API====

ARDI includes a Javascript API to access live data in HTML pages and SVG images.

It's quite simple to use (particularly combined with JQuery) and requires only a few lines of code to get working.

You can find the javascript include file at **/plugins/optrix/ardiclient.js**.

===Model===

The Javascript API provides the **ARDIHMI** class, which is used to subscribe to updates from an ARDI server.

The process consists of...

  * Creating the ARDIHMI object,
  * Subscribing to Change Events
  * Connecting to the Server

<code javascript>
//Prepare the new object
var connection = new ARDIHMI();
	
//Subscribe To Each Dynamic Property
connection.Subscribe("//Dynamic Property//",function (val) {
    //Update HTML/SVG
}); 	

//Connect to the server
connection.ConnectTo("//address//");

</code>

Where **address** is the IP address of the ARDI database (this includes the //site// or //database// code when an ARDI server supports multiple databases - for example, the PowerGen Demo on http://ademo.optrix.com.au has a code of **pd**, so the full address is **http://ademo.optrix.com.au/s/pd**)

You'll need to know the **[[data points|data point name]]** for every asset property you'd like to display in your image or web page.

For example, "23:20:measurement" is the code for the measured pressure on asset 23.

===Examples===

[[Basic Digital Signage Examples]]