QUESTION 20
Which feature was introduced in HTML5?
HTML5 introduced several new features that enhanced web development capabilities significantly. One of the notable features is the native drag-and-drop capability.
* Native Drag-and-Drop Capability:
* Description: HTML5 allows developers to create drag-and-drop interfaces natively using the draggable attribute and the DragEvent interface. This means elements can be dragged and dropped within a web page without requiring external JavaScript libraries.
* Implementation:
* Making an Element Draggable: To make an element draggable, you set the draggable attribute to true:
<div id=”drag1″ draggable=”true”>Drag me!</div>
* Handling Drag Events: You use event listeners for drag events such as dragstart, dragover, and drop:
document.getElementById(“drag1”).addEventListener(“dragstart”, function(event) { event.dataTransfer.setData(“text”, event.target.id);
});
document.getElementById(“dropzone”).addEventListener(“dragover”, function(event) { event.preventDefault();
});
document.getElementById(“dropzone”).addEventListener(“drop”, function(event) { event.preventDefault(); var data = event.dataTransfer.getData(“text”); event.target.appendChild(document.getElementById(data));
});
* Example: This example demonstrates a simple drag-and-drop operation:
html
Copy code
<div id=”drag1″ draggable=”true”>Drag me!</div>
<div id=”dropzone” style=”width: 200px; height: 200px; border: 1px solid black;”>Drop here</div>
* References:
* W3C HTML5 Specification – Drag and Drop
* MDN Web Docs – HTML Drag and Drop API
* HTML5 Doctor – Drag and Drop
HTML5’s native drag-and-drop feature streamlines the process of creating interactive web applications by eliminating the need for third-party libraries, thus making it a powerful addition to the HTML standard.
