I am trying to drag-drop elements between parent frame and iframe using jQuery. I have a panel in parent frame which contains some draggable items which can be dropped on th
AFAIK, if iframes come from different domains, this is not doable in a "common" way (unless you control both iframes), browser security measures prevent it, otherwise you could wrap a banking website and steal passwords, for example, when you log in.
Some info on workarounds: http://softwareas.com/cross-domain-communication-with-iframes
If you control both iframes:
Drag & Drop between iframes by sample: http://www.dhtmlx.com/docs/products/dhtmlxTree/samples/05_drag_n_drop/06_pro_drag_frame.html
Cross Browser HTML5 Drag and Drop: http://www.useragentman.com/blog/2010/01/10/cross-browser-html5-drag-and-drop/
Another sample: http://jqfaq.com/how-to-implement-drag-and-drop-between-iframes/
Using HTML5 Drag and Drop API to create Cross Frame and Cross Browser Implementation. http://blog.stackhive.com/post/137799349684/building-a-seamless-drag-and-drop-interface
EDIT - The previous link wasn't valid (dockPHP got rebranded as StackHive) so have written out a more complete post that can help in creating an epic drag and drop interface.
Irrespective of the structure of frames, one can always use Robot class to drag and drop elements across them. I am providing a sample code just in case:
//Setting up chrome driver
WebDriverManager.getInstance(CHROME).setup();
WebDriver driver = new ChromeDriver();
driver.manage().window().maximize();
//Redirecting to the website
driver.get("https://codepen.io/rjsmer/full/vvewWp");
Robot robot = new Robot();
robot.mouseMove(x-coordinate1, y-coordinate1);
robot.mousePress(InputEvent.BUTTON1_DOWN_MASK);
Thread.sleep(2000);
robot.mouseMove(x-coordinate2, y-coordinate2);
Thread.sleep(2000);
robot.mouseRelease(InputEvent.BUTTON1_DOWN_MASK);