Mousedown
Mousedown is a browser event that occurs when a user clicks the mouse button down on an element.
Mouseenter
For issues relating to setting up, subscribing to, or handling mouseenter events.
Others
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This would explain why in your case mousedown or click are slower than mouseenter which in a touch device happens as soon as you touch the element being monitored from question Jquery .mouseenter() event is very much faster than .click() or .mousedown() events |