Consider marking event handler as ‘passive’ to make the page more responsive. For scrolling and touch event listeners that do not call e.preventDefault() it is a big performance boost to set the option passive to true to tell the browser that your event is … It doesn’t have any dependencies, and it’s small, only 7.34 kB minified + gzipped ! Hammer is a open-source library that can recognize gestures made by touch, mouse and pointerEvents. If you care about the text-selection and not so much about the desktop experience, you can simply remove this option from the defaults. Minified code (v2.0.8) Hammer.each(obj, handler) Iterate an … The user-select css property disables this. Add touch gestures to your webapp.

Hammer.min.js v2.0.8 — 7.34 kB gzipped An object with a lot of info about the gesture is passed to every Hammer.js event callback (as described here in the API docs). Handling of ‘touchstart’ input event was delayed for X ms due to main thread being busy. Its values are between -180 and 180 (0 means RIGHT, -90 means UP, 90 means DOWN, 180 means LEFT). Hammer does not use jQuery any longer so won't be an issue but used to in v1.x. Add multi-touch gestures to your webpage. Hammer is setting a property to improve the UX of the panning on desktop. The eventObject.angle property is what you are looking for. Regularly, the desktop browser would select the text while you drag over the page. I would really like to see support added for event listener options / passive events in general though jQuery Mobile has always battled issues with scrolling performance on android devices and this would directly help some of our cases. Questions: I am using hammer for dragging and it is getting choppy when loading other stuff, as this warning message is telling me. Hammer.off(element, types, handler) Like Hammer.on, this is a wrapper around removeEventListener that accepts multiple event types.


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