JSEvent

// A client design method that handles ondrag
if (event.getType() == JSEvent.ONDRAG)
{
     // the data is the selected elements array
     var elements = event.data;
     // only start a client design drag when there is 1 element
     if (elements.length == 1)
     {
     	return true;
     }
}

// code for a data drag method
event.data = "drag me!";
return DRAGNDROP.COPY;

// code for a data drop method
var data = event.data;
elemements[event.getElementName()].setText(data);
return true;

if (event.getElementName() == 'myElement')
{
    elements[event.getElementName()].bgcolor = '#ff0000';
}

forms[event.getFormName()].myFormMethod();

//test if the SHIFT modifier is used.
if (event.getModifiers() & JSEvent.MODIFIER_SHIFT)
{
	//do shift action
}

// cast to runtime text field (change to anoter kind of type if you know the type)
/** @type {RuntimeTextField} */
var source = event.getSource();
var sourceDataProvider = source.getDataProviderID();

event.getTimestamp();

if (event.getType() == JSEvent.ACTION) 
{
	// its an action event.
}

var x = event.getX();
var xPrevious = previousEvent.getX();
var movedXPixels = x -xPrevious;

var y = event.getY();
var yPrevious = previousEvent.getY();
var movedYPixels = y -yPrevious;