Before you begin to use jQuery’s drag and drop function, you will want to ensure that the application and its library are actually integrated into your site. Additionally, you’ll be required to utilize the jQuery User Interface (UI) plugin, as this is the application responsible for such useful functions as drag and drop. If you need help establishing and navigating jQuery UI, you can find expert assistance through Udemy’s jQuery for Beginners course.
Transform Elements Into Draggable Functions
Containing Draggable Functions
There may be circumstances in which you wish to limit the areas in which elements are able to be dragged and dropped on a webpage. A number of indicators can be added to the code to contain draggable functions to specified locations. The constraining indicators can also limit the number of elements that the user is able to drag and drop. For example, the indication ‘parent’ will ensure that only the chosen element is made draggable. Additionally, placing values x1, x2, y1 and y2 for parameters will limit the range of space in which a certain element can be dragged or dropped. Additional means of containing draggable functions can be learned through Marie Taylor’s Learn to Use jQuery UI Widgets.
Dropping The Draggable Element
The designation ‘drag and drop’ doesn’t really apply until you also make an element droppable. As with the initial draggable distinction, it is easy to include a droppable element in your coding. You will want to include the following function in the code: “$(‘#makeMeDraggable’).droppable()”. As with the draggable designation, there are ways in which you can add parameters for when, where and how an element is dropped. The event handler function known as “handleDropEvent()” should provide assistance in this endeavor. Additionally, you can learn several essential dropping parameters in jQuery Fundamentals Training.