Settings

aka Constructor Properties aka Properties aka options.

const ds = new DragSelect({
  selectables: document.querySelectorAll('.selectable'),
});

DragSelect is hyper customizable: all properties are optional, you can totally just pass an empty object and set the settings later. See updating-settings

Selecting

property	type	default	description
selectables	[HTMLElement | SVGElement] | HTMLElement | SVGElement	[]	The elements that can be selected
area	HTMLElement | SVGElement | Document	document	The square in which you are able to select the elements
selector	HTMLElement	Is Auto-Created	The square that will be used to draw the selection.
selectionThreshold	number	0	How much % of the element has to be selected to be considered selected (0 = just touching, 1 = fully inside the selection)
multiSelectMode	boolean	false	Add newly selected elements to the selection instead of replacing them
multiSelectToggling	boolean	true	Whether or not to toggle already active elements while multi-selecting (default mimics MacOS behavior)
multiSelectKeys	['Shift'|'Control'|'Meta'|string]	['Control', 'Shift', 'Meta']	Keys for multi-selection. Any key value is possible (see MDN docs). The best support is given for Control, Shift and Meta. Provide an empty array [] if you want to turn off the functionality.

AutoScroll

property	type	default	description
autoScrollSpeed	number	5	The speed in which the area scrolls while selecting (if available). The unit is arbitrary (aims for 30fps). Set to 0.0001 to disable auto-scrolling
overflowTolerance	{ x:number, y:number }	{ x: 25, y: 25 }	Tolerance for autoScroll (how close one has to be near an edges for autoScroll to start)

Dragging

property	type	default	description
draggability	boolean	true	When a user is dragging on an already selected element, the selection is dragged.
useTransform	boolean	true	Whether to use the more performant hardware accelerated css transforms when dragging instead of the top/left positions.
immediateDrag	boolean	true	Whether a selectable element is draggable before being selected or needs to be selected first
keyboardDrag	boolean	true	Whether or not the user can drag with the keyboard (Accessibility).
dragKeys	{ up:string[], down:string[], left:string[], right:string[] }	{ up:['ArrowUp'], down: ['ArrowDown'], left: ['ArrowLeft'], right: ['ArrowRight'] }	The keys available to drag element using the keyboard. Any key value is possible (see MDN docs).
keyboardDragSpeed	number	10	The speed at which elements are dragged using the keyboard. In pixels per keyDown.

Dropping

property	type	default	description
dropZones	[{ id:string, element:HTMLElement, droppables?: [HTMLElement | SVGElement] | HTMLElement | SVGElement }]	[]	Zones with association of droppable items that can be dropped into them. id: any unique identifying string. element: is the dropzone itself. droppables: the elements that can be dropped into that zone. This is optional, by default it is all selectables
dropInsideThreshold	number	1	How much % of the item has to be inside the dropzone to be considered inside (0 = barely touching, 1 = completely inside)
dropTargetThreshold	number	0	How much % of the zone does the pointer has to be in to be considered a target (0 = anywhere in the zone, max: 0.5 = has to point at the center of the zone)

Styling

property	type	default	description
customStyles	boolean	false	If true, no styles will be automatically applied to the selector element (except position: absolute)
selectedClass	string	ds-selected	The class name assigned to the selected items.
hoverClass	string	ds-hover	The class name assigned to the mouse hovered items.
selectorClass	string	ds-selector	The class name assigned to the square selector helper.
selectableClass	string	ds-selectable	The class name assigned to the elements that can be selected.
selectorAreaClass	string	ds-selector-area	The class assigned to the square in which the selector resides. By default it's invisible
droppedTargetClass	string	ds-dropped-target & ds-dropped-target-${zone.id}	On an item corresponding the target dropzone. This is also the prefix for ds-dropped-target-${zone.id}.
droppedInsideClass	string	ds-dropped-inside & ds-dropped-inside-${zone.id}	On an item that is within its dropzone bounds after a drop. This is also the prefix for ds-dropped-inside-${zone.id}
droppableClass	string	ds-droppable & ds-droppable-${zone.id}	On element that can be dropped into at least one container. This is also the prefix for ds-droppable-${zone.id}
dropZoneClass	string	ds-dropzone	On each dropZone
dropZoneReadyClass	string	ds-dropzone-ready	On corresponding dropZone when element is dragged
dropZoneTargetClass	string	ds-dropzone-target	On dropZone that has elements from any successful target drop
dropZoneInsideClass	string	ds-dropzone-inside	On dropZone that has elements inside after any drop

Miscellaneous

property	type	default	description
refreshMemoryRate	number (milliseconds)	80	Refresh rate on memoization, higher numbers mean better performance but more lag if elements are moving while interacting/selecting, lower numbers mean less lag but worse performance. If none of your DOMNodes are moving, you can set it to a very high number to increase performance
usePointerEvents	boolean	false	Whether to use Pointer Events to replace traditional Mouse or Touch Events. Useful for tools like Google Blockly.
zoom	number	1	Zoom scale factor (in case of using CSS style transform: scale() which messes with real positions). Unit scale zoom. (deprecated)

DragSelect Example with all Props

Here is an example using all available settings for your convenience:

new DragSelect({
  selectables: document.querySelectorAll('.selectable'),
  area: document.querySelector('#area'),
  selector: document.querySelector('#selector'),
  selectionThreshold: 0,
  multiSelectMode: false,
  multiSelectToggling: true,
  multiSelectKeys: ['Control', 'Shift', 'Meta'],
  autoScrollSpeed: 5,
  overflowTolerance: { x: 25, y: 25 },
  draggability: true,
  useTransform: true,
  immediateDrag: true,
  keyboardDrag: true,
  dragKeys: { up:['ArrowUp'], down: ['ArrowDown'], left: ['ArrowLeft'], right: ['ArrowRight'] },
  keyboardDragSpeed: 10,
  dropZones: [{ id: 'foo', element: document.querySelector('#zone') }],
  dropInsideThreshold: 1,
  dropTargetThreshold: 0,
  customStyles: false,
  selectedClass: 'ds-selected',
  hoverClass: 'ds-hover',
  selectorClass: 'ds-selector',
  selectableClass: 'ds-selectable',
  selectorAreaClass: 'ds-selector-area',
  droppedTargetClass: 'ds-dropped-target',
  droppedInsideClass: 'ds-dropped-inside',
  droppableClass: 'ds-droppable',
  dropZoneClass: 'ds-dropzone',
  dropZoneReadyClass: 'ds-dropzone-ready',
  dropZoneTargetClass: 'ds-dropzone-target',
  dropZoneInsideClass: 'ds-dropzone-inside',
  refreshMemoryRate: 80,
  usePointerEvents: false,
  zoom: 1,
});