Element: mouseup event

The 
mouseup event is fired at an Element when a button on a pointing device (such as a mouse or trackpad) is released while the pointer is located inside it.
mouseup events are the counterpoint to mousedown events.
This behavior is different from pointerup events. When using a physical mouse, 
mouseup events fire whenever any button on a mouse is released. 
pointerup events fire only upon the last button release; previous button releases, while other buttons are held down, don't fire 
pointerup events.
Syntax
Use the event name in addEventListener():
addEventListener("mouseup", (event) => { })
Alternatively, assign to the event handler property of the interface:
onmouseup = (event) => { }
Event type
A MouseEvent. Inherits from UIEvent and Event.
Examples
See 
mousemove event for example code.
Specifications
Browser compatibility
See also
Learn: Introduction to events
mousedown
mousemove
click
dblclick
mouseover
mouseout
mouseenter
mouseleave
contextmenu
pointerup