Which attribute value enables dragging on an element in HTML5?

Which attribute value enables dragging on an element in HTML5?

• A. draggable="on"
• B. draggable="true"
• C. draggable="false"
• D. draggable="enable"

Answer: (B)

Draggable is a boolean HTML5 attribute that marks an element as draggable using the HTML5 drag-and-drop API. To enable dragging, the attribute is present with a value of true, for clarity in the markup: draggable="true". You can also simply write draggable, and it will be treated as enabled because the attribute is present. This is why draggable="true" is the best choice among the options: it explicitly communicates that dragging is allowed and aligns with how boolean attributes are commonly written in HTML. The other values aren’t appropriate: draggable="on" isn’t the standard value for this attribute, draggable="false" doesn’t reliably disable dragging in all browsers since the presence of the attribute can still enable dragging, and draggable="enable" isn’t a recognized value for this attribute. When dragging is enabled, you typically handle events like dragstart to set up the drag data.

Draggable is a boolean HTML5 attribute that marks an element as draggable using the HTML5 drag-and-drop API. To enable dragging, the attribute is present with a value of true, for clarity in the markup: draggable="true". You can also simply write draggable, and it will be treated as enabled because the attribute is present.

This is why draggable="true" is the best choice among the options: it explicitly communicates that dragging is allowed and aligns with how boolean attributes are commonly written in HTML. The other values aren’t appropriate: draggable="on" isn’t the standard value for this attribute, draggable="false" doesn’t reliably disable dragging in all browsers since the presence of the attribute can still enable dragging, and draggable="enable" isn’t a recognized value for this attribute. When dragging is enabled, you typically handle events like dragstart to set up the drag data.