ReadonlyaltThe MouseEvent.altKey read-only property is a boolean value that indicates whether the alt key was pressed or not when a given mouse event occurs.
ReadonlyAT_ReadonlybubblesThe bubbles read-only property of the Event interface indicates whether the event bubbles up through the DOM tree or not.
ReadonlyBUBBLING_ReadonlybuttonThe MouseEvent.button read-only property indicates which button was pressed or released on the mouse to trigger the event.
ReadonlybuttonsThe MouseEvent.buttons read-only property indicates which buttons are pressed on the mouse (or other input device) when a mouse event is triggered.
ReadonlycancelableThe cancelable read-only property of the Event interface indicates whether the event can be canceled, and therefore prevented as if the event never happened.
The cancelBubble property of the Event interface is deprecated. Use Event.stopPropagation() instead. Setting its value to true before returning from an event handler prevents propagation of the event. In later implementations, setting this to false does nothing. See Browser compatibility for details.
ReadonlyCAPTURING_ReadonlyclientThe clientX read-only property of the MouseEvent interface provides the horizontal coordinate within the application's viewport at which the event occurred (as opposed to the coordinate within the page).
ReadonlyclientThe clientY read-only property of the MouseEvent interface provides the vertical coordinate within the application's viewport at which the event occurred (as opposed to the coordinate within the page).
ReadonlycomposedThe read-only composed property of the Event interface returns a boolean value which indicates whether or not the event will propagate across the shadow DOM boundary into the standard DOM.
ReadonlyctrlThe MouseEvent.ctrlKey read-only property is a boolean value that indicates whether the ctrl key was pressed or not when a given mouse event occurs.
ReadonlycurrentThe currentTarget read-only property of the Event interface identifies the element to which the event handler has been attached.
ReadonlydefaultThe defaultPrevented read-only property of the Event interface returns a boolean value indicating whether or not the call to Event.preventDefault() canceled the event.
ReadonlydeltaThe WheelEvent.deltaMode read-only property returns an unsigned long representing the unit of the delta values scroll amount. Permitted values are:
ReadonlydeltaThe WheelEvent.deltaX read-only property is a double representing the horizontal scroll amount in the WheelEvent.deltaMode unit.
ReadonlydeltaThe WheelEvent.deltaY read-only property is a double representing the vertical scroll amount in the WheelEvent.deltaMode unit.
ReadonlydeltaThe WheelEvent.deltaZ read-only property is a double representing the scroll amount along the z-axis, in the WheelEvent.deltaMode unit.
ReadonlydetailThe UIEvent.detail read-only property, when non-zero, provides the current (or next, depending on the event) click count.
ReadonlyDOM_ReadonlyDOM_ReadonlyDOM_ReadonlyeventThe eventPhase read-only property of the Event interface indicates which phase of the event flow is currently being evaluated.
ReadonlyisThe isTrusted read-only property of the Event interface is a boolean value that is true when the event was generated by the user agent (including via user actions and programmatic methods such as HTMLElement.focus()), and false when the event was dispatched via EventTarget.dispatchEvent(). The only exception is the click event, which initializes the isTrusted property to false in user agents.
ReadonlylayerThe MouseEvent.layerX read-only property returns the horizontal coordinate of the event relative to the current layer.
ReadonlylayerThe MouseEvent.layerY read-only property returns the vertical coordinate of the event relative to the current layer.
ReadonlymetaThe MouseEvent.metaKey read-only property is a boolean value that indicates whether the meta key was pressed or not when a given mouse event occurs.
ReadonlymovementThe movementX read-only property of the MouseEvent interface provides the difference in the X coordinate of the mouse (or pointer) between the given move event and the previous move event of the same type.
ReadonlymovementThe movementY read-only property of the MouseEvent interface provides the difference in the Y coordinate of the mouse (or pointer) between the given move event and the previous move event of the same type.
ReadonlyNONEReadonlyoffsetThe offsetX read-only property of the MouseEvent interface provides the offset in the X coordinate of the mouse pointer between that event and the padding edge of the target node.
ReadonlyoffsetThe offsetY read-only property of the MouseEvent interface provides the offset in the Y coordinate of the mouse pointer between that event and the padding edge of the target node.
ReadonlypageThe pageX read-only property of the MouseEvent interface returns the X (horizontal) coordinate (in pixels) at which the mouse was clicked, relative to the left edge of the entire document. This includes any portion of the document not currently visible.
ReadonlypageThe pageY read-only property of the MouseEvent interface returns the Y (vertical) coordinate (in pixels) at which the mouse was clicked, relative to the top edge of the entire document. This includes any portion of the document not currently visible.
ReadonlyrelatedThe MouseEvent.relatedTarget read-only property is the secondary target for the mouse event, if there is one.
The Event property returnValue indicates whether the default action for this event has been prevented or not.
ReadonlyscreenThe screenX read-only property of the MouseEvent interface provides the horizontal coordinate (offset) of the mouse pointer in screen coordinates.
ReadonlyscreenThe screenY read-only property of the MouseEvent interface provides the vertical coordinate (offset) of the mouse pointer in screen coordinates.
ReadonlyshiftThe MouseEvent.shiftKey read-only property is a boolean value that indicates whether the shift key was pressed or not when a given mouse event occurs.
ReadonlysrcThe deprecated Event.srcElement is an alias for the Event.target property. Use Event.target instead.
ReadonlytargetThe read-only target property of the Event interface is a reference to the object onto which the event was dispatched. It is different from Event.currentTarget when the event handler is called during the bubbling or capturing phase of the event.
ReadonlytimeThe timeStamp read-only property of the Event interface returns the time (in milliseconds) at which the event was created.
ReadonlytypeThe type read-only property of the Event interface returns a string containing the event's type. It is set when the event is constructed and is the name commonly used to refer to the specific event, such as click, load, or error.
ReadonlyviewThe UIEvent.view read-only property returns the WindowProxy object from which the event was generated. In browsers, this is the Window object the event happened in.
ReadonlywhichThe UIEvent.which read-only property of the UIEvent interface returns a number that indicates which button was pressed on the mouse, or the numeric keyCode or the character code (charCode) of the key pressed on the keyboard.
ReadonlyxThe MouseEvent.x property is an alias for the MouseEvent.clientX property.
ReadonlyyThe MouseEvent.y property is an alias for the MouseEvent.clientY property.
The composedPath() method of the Event interface returns the event's path which is an array of the objects on which listeners will be invoked. This does not include nodes in shadow trees if the shadow root was created with its ShadowRoot.mode closed.
The MouseEvent.getModifierState() method returns the current state of the specified modifier key: true if the modifier is active (i.e., the modifier key is pressed or locked), otherwise, false.
The MouseEvent.initMouseEvent() method initializes the value of a mouse event once it's been created (normally using the Document.createEvent() method).
The preventDefault() method of the Event interface tells the user agent that the event is being explicitly handled, so its default action, such as page scrolling, link navigation, or pasting text, should not be taken.
The stopImmediatePropagation() method of the Event interface prevents other listeners of the same event from being called.
The stopPropagation() method of the Event interface prevents further propagation of the current event in the capturing and bubbling phases. It does not, however, prevent any default behaviors from occurring; for instance, clicks on links are still processed. If you want to stop those behaviors, see the preventDefault() method. It also does not prevent propagation to other event-handlers of the current element. If you want to stop those, see stopImmediatePropagation().
The
WheelEventinterface represents events that occur due to the user moving a mouse wheel or similar input device.MDN Reference