jQuery.event.move

Project

Move events

movestart
Fired following touchmove or mousemove, when the touch (or mouse) crosses a threshold distance from the position of the mousedown or touchstart.
move
Fired on every animation frame where a touchmove or mousemove has changed position.
moveend
Fired following mouseup or touchend, after the last move event, and in the case of touch events when the finger that started the move has been lifted.

Move event objects are augmented with the properties:

e.pageX, e.pageY
Current page coordinates of pointer.
e.startX, e.startY
Page coordinates the pointer had at movestart.
e.distX, e.distY
Distance the pointer has moved since movestart.
e.deltaX, e.deltaY
Distance the pointer has moved since last move event.
e.velocityX, e.velocityY
Velocity in pixels/ms, averaged over the last few events.

How to use move events

jQuery('.mydiv')
.bind('move', function(e) {
  // move .mydiv horizontally
  jQuery(this).css({ left: e.startX + e.deltaX });
})
.bind('moveend', function() {
  // move is complete!
});

Why not just use raw mouse or touch events?

Well, yes, you could. But jquery.event.move abstracts away the details that need attention when writing this kind of interaction model with mouse and touch events:

Move events are intended as 'building blocks' for helping to build interactions. They track individual fingers or a single mouse, and expose properties on their event objects that are useful for detecting gestures.

What about drag events?

Move events are designed to compliment drag events, where the two have different meanings: drag events are for transferring data while move events are for making interactive interfaces. That said, movestart, move and moveend events deliberately echo dragstart, drag and dragend events, with one significant difference: where the drag event fires continuously whether you have moved the pointer or not, the move event fires only after the pointer has been moved.

Where both a dragstart and any move event are bound to the same node, drag events are suppressed.

Where is jquery.event.move being used?

It's part of my front-end toolkit, Bolt. It's also used for:

Do let me know at @stephband if you use it in your project. Cheers!