CODEWITHSUNDEEP
javascripthtmljqueryjquery-events
jwl
jwl

Reputation: 10514

How to get mouseup to fire once mousemove complete

It seems that mouseup events are only fired when they are not in conjunction with a mousemove. In other words, push down on the left mouse button and let go, and mouseup is fired. But if you drag across the image and then let go, no mouseup is fired. Here is an example that shows this behavior:

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js"></script>
<div id="Out">
    <img id="Img" src="http://sstatic.net/so/img/logo.png" width=500>
</div>
<script language=JavaScript>
    $(function() {
        $(document).bind("mouseup",function() {alert("UP");});
        //$("#Out").bind("mouseup",function() {alert("UP");});
        //$("#Img").bind("mouseup",function() {alert("UP");});
    });
</script>

If you load this, and click and let go, "UP" will alert. However, if you drag and then let go, no UP is fired.

How can I have mouseup fire when mousemove is completed, or how can I inspect the mousemove event to determine that the left mouse button is now off?

Upvotes: 18

Views: 21398

Answers (7)

gm2008
gm2008

Reputation: 4325

I've encountered the same problem. Even after I add e.preventDefault() in the mousedown handler, it is still not resolved.

Finally, I find that if I turn off the following codes in my mousemove handler, my mouseup handler is called normally. 

     mouseDragArea.css({
         top: dragAreaPos.y + 'px',
         left: dragAreaPos.x + 'px',
         width: Math.abs(mouseCurPos.x - mouseClickPos.x) + 'px',
         height: Math.abs( mouseCurPos.y - mouseClickPos.y ) + 'px'
     });

mouseDragArea is a programatically created element, which has a dotted border to show the rectangular area click-dragged by mouse:

    mouseDragArea = $('<div id="mouse-drag-area"></div>');

Then, I've realized that this #mouse-drag-area element is ABOVE the original element that handles the mouseup event. So after adding the following css declaration to #mouse-drag-area, it is sorted:

    pointer-events:none;

In another word, the crux is about which element you are setting your mouseup handler for.

Upvotes: 0

Dustin Poissant
Dustin Poissant

Reputation: 3418

I had a similar problem and this worked for me:

$(document).on("dragend", function(e){
  $(e.target).trigger("mouseup");
  e.preventDefault();
});

Upvotes: 1

Bill Hoag
Bill Hoag

Reputation: 697

I was having a similar issue with KineticJS objects. Using kinetic's dragend instead of mouseup solved the problem.

Upvotes: 0

alex
alex

Reputation: 644

Don't forget to namespace your events otherwise all event handlers will be unbound:

$('#element').bind('mousedown.namespace', function(e) {
    $(document).one('mouseup', function() {
        callback_func();
        $(document).unbind('mousedown.namespace');
    });
 });

Upvotes: 5

TimDog
TimDog

Reputation: 8918

I've found that when I set my text as unselectable using the below CSS, the mouseup event is inhibited as well -- perhaps this will help someone else.

-moz-user-select: none;
-khtml-user-select: none;
user-select: none;

Upvotes: 0

James Ellis-Jones
James Ellis-Jones

Reputation: 3092

As of JQuery 1.4 you need to substitute $('document') for $(). In fact, I'm using this to make a menu inside a JQuery UI Dialog, which seems to trap mousemove events. So I simply substitute my container div for $() (which looks something like $('#myContainerDiv')). This seems to work fine too.

Upvotes: 1

Tatu Ulmanen
Tatu Ulmanen

Reputation: 124758

This is a pattern I use alot, works generally very well on all things relating to mousemove. The mouseup event is binded when the user clicks mousedown, this forces it to fire when the user lets go of the mouse button, no matter how much it's moved.

$('#element').mousedown(function(e) {

    // You can record the starting position with
    var start_x = e.pageX;
    var start_y = e.pageY;

    $().mousemove(function(e) {
        // And you can get the distance moved by
        var offset_x = e.pageX - start_x;
        var offset_y = e.pageY - start_y;

        return false;
    });

    $().one('mouseup', function() {
        alert("This will show after mousemove and mouse released.");
        $().unbind();
    });

    // Using return false prevents browser's default,
    // often unwanted mousemove actions (drag & drop)
    return false;
});

Upvotes: 25

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