Element: mouseup event

BaselineWidely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers sinceJuly 2015.

Themouseupevent is fired at anElementwhen a button on a pointing device (such as a mouse or trackpad) is released while the pointer is located inside it.

mouseupevents are the counterpoint tomousedownevents.

Syntax

Use the event name in methods likeaddEventListener(),or set an event handler property.

addEventListener("mouseup",(event)=>{});

onmouseup=(event)=>{};

Event type

AMouseEvent.Inherits fromUIEventandEvent.

Event properties

This interface also inherits properties of its parents,UIEventandEvent.

MouseEvent.altKeyRead only: Returnstrueif thealtkey was down when the mouse event was fired.
MouseEvent.buttonRead only: The button number that was pressed (if applicable) when the mouse event was fired.
MouseEvent.buttonsRead only: The buttons being pressed (if any) when the mouse event was fired.
MouseEvent.clientXRead only: The X coordinate of the mouse pointer inviewport coordinates.
MouseEvent.clientYRead only: The Y coordinate of the mouse pointer inviewport coordinates.
MouseEvent.ctrlKeyRead only: Returnstrueif thecontrolkey was down when the mouse event was fired.
MouseEvent.layerX Non-standard Read only: Returns the horizontal coordinate of the event relative to the current layer.
MouseEvent.layerY Non-standard Read only: Returns the vertical coordinate of the event relative to the current layer.
MouseEvent.metaKeyRead only: Returnstrueif themetakey was down when the mouse event was fired.
MouseEvent.movementXRead only: The X coordinate of the mouse pointer relative to the position of the lastmousemoveevent.
MouseEvent.movementYRead only: The Y coordinate of the mouse pointer relative to the position of the lastmousemoveevent.
MouseEvent.offsetXRead only: The X coordinate of the mouse pointer relative to the position of the padding edge of the target node.
MouseEvent.offsetYRead only: The Y coordinate of the mouse pointer relative to the position of the padding edge of the target node.
MouseEvent.pageXRead only: The X coordinate of the mouse pointer relative to the whole document.
MouseEvent.pageYRead only: The Y coordinate of the mouse pointer relative to the whole document.
MouseEvent.relatedTargetRead only: The secondary target for the event, if there is one.
MouseEvent.screenXRead only: The X coordinate of the mouse pointer inscreen coordinates.
MouseEvent.screenYRead only: The Y coordinate of the mouse pointer inscreen coordinates.
MouseEvent.shiftKeyRead only: Returnstrueif theshiftkey was down when the mouse event was fired.
MouseEvent.mozInputSource Non-standard Read only: The type of device that generated the event (one of theMOZ_SOURCE_*constants). This lets you, for example, determine whether a mouse event was generated by an actual mouse or by a touch event (which might affect the degree of accuracy with which you interpret the coordinates associated with the event).
MouseEvent.webkitForce Non-standard Read only: The amount of pressure applied when clicking.
MouseEvent.xRead only: Alias forMouseEvent.clientX.
MouseEvent.yRead only: Alias forMouseEvent.clientY.

Examples

Seemousemoveeventfor example code.

Specifications

Specification
UI Events #event-type-mouseup
HTML Standard #handler-onmouseup

Browser compatibility

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