How to use drag and drop ui in JavaScript?

4 mins read

This article explains how to use Drag and Drop UI libraries in JavaScript.

Essential JS 2 Drag and Drop UI libraries

Drag and Drop is supported through two library modules: Draggable and Droppable. Draggable module enables DOM elements to be dragged using a mouse or touch gestures, and the Droppable module designates DOM elements as droppable zones.

Installing

You can get both the Drag and Drop Essential JS 2 UI Library modules from a single npm package named “@syncfusion/ej2-base”.

https://www.npmjs.com/package/@syncfusion/ej2-base

You can run the following command to install.

npm install @syncfusion/ej2-base

Initializing draggable

You can make any element draggable by passing the element to the Draggable constructor. Refer to the following code snippet to enable draggable for a DOM element.

import {Draggable} from  '@syncfusion/ej2-base';

 let dragElement: HTMLElement = document.getElementById('element1');

 let draggable:Draggable = new Draggable(dragElement,{clone: false});

Creating droppable zone

You can convert any DOM element as a droppable zone, which accepts the draggable elements. Refer to the following code snippet to enable a droppable zone.

import { Droppable} from  '@syncfusion/ej2-base'; 

let droppable: Droppable = new Droppable(document.getElementById('droppable'));

Defining drop action

To define the drop action, set drop callback function during droppable object creation. You can get details of dropped element using the dropped element property in event argument. Refer to the following code snippet to use basic Drag and Drop action.

import { Draggable, Droppable, DropEventArgs } from '@syncfusion/ej2-base';

let draggable: Draggable = new Draggable(document.getElementById('element1'), {

    clone: false

});

let droppable: Droppable = new Droppable(document.getElementById('droppable'), {

   drop: (e: DropEventArgs) => {

        e.droppedElement.querySelector('.drag-text').textContent = 'Dropped';

    }

});

Sample:

https://github.com/SyncfusionExamples/EJ2-Drag-and-Drop-UI-libraries

Resources

You can also refer to the following resources to learn more details about Essential JS 2 components.

Conclusion

We hope you enjoyed learning about how to use drag and drop UI in JavaScript.

You can refer to our JavaScript feature tour page to know about its other groundbreaking feature representations and documentation, and how to quickly get started for configuration specifications. You can also explore our JavaScript example to understand how to create and manipulate data.

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