Created
March 22, 2012 04:54
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Drag and Drop in RxJS
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| <!DOCTYPE html> | |
| <head> | |
| <script src="http://code.jquery.com/jquery-latest.js" type="text/javascript"></script> | |
| <script src="rx.min.js" type="text/javascript"></script> | |
| <script src="rx.jquery.js" type="text/javascript"></script> | |
| <script type="text/javascript"> | |
| $(function () { | |
| var dragTarget = $('#dragTarget') | |
| // Get the three major events | |
| , mouseup = dragTarget.onAsObservable('mouseup') | |
| , mousemove = dragTarget.onAsObservable('mousemove') | |
| , mousedown = dragTarget.onAsObservable('mousedown').select(function (event) { | |
| // calculate offsets when mouse down | |
| event.preventDefault(); | |
| return { left: event.clientX - dragTarget.offset().left, top: event.clientY - dragTarget.offset().top }; | |
| }) | |
| // Combine mouse down with mouse move until mouse up | |
| , mousedrag = mousedown.selectMany(function(imageOffset) { | |
| return mousemove.select(function (pos) { | |
| // calculate offsets from mouse down to mouse moves | |
| return { | |
| left: pos.clientX - imageOffset.left, top: pos.clientY - imageOffset.top | |
| }; | |
| }).takeUntil(mouseup); | |
| }); | |
| mousedrag.subscribe (function (pos) { | |
| // Update position | |
| $('#dragTarget').css({top: pos.top, left: pos.left}); | |
| }); | |
| }); | |
| </script> | |
| </head> | |
| <body> | |
| <div id="dragTarget" | |
| style="background-color: #000000; border: 1px solid #666666; | |
| color: #ffffff; padding: 10px; position: absolute; | |
| font-family: sans-serif; cursor: move"> | |
| Drag Me! | |
| </div> | |
| </body> | |
| </html> |
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You're script looks good but the mousemove should be on
document:)mousemove = $(document).onAsObservable('mousemove')because when you're leaving thedragTargetnode with your mouse the event stops 👍