Capture mouse in Firefox

Question

In IE exists .setCapture(); .releaseCapture() functions. What's the equivalent of these functions in Firefox without using jQuery? (my client does not want to use it)

Answer 1

As it has been said above, Firefox does not offer this functionality, and you can work around it by monitoring events on the entire document. To be sure that there is no a better trick, I’ve just checked jQuery UI, and it appears they use the same approach. So for instance if you wanted to capture mouse movements when mouse is down in jQuery, you would do:

$("#someElement").
    mousedown(function() { $(document).mousemove(captureMouseMove) }).
    mouseup(function() { $(document).unbind("mousemove", captureMouseMove) });

function captureMouseMove(event)
{
    // ...
}

Answer 2

https://developer.mozilla.org/en-US/docs/DOM/element.setCapture

setCapture and releaseCapture were added to Firefox 4 (with the release of Gecko 2) on March 22, 2011. However, WebKit (Chrome/Safari) still lacks these functions.