buttons property. For mouse, this is when the device has at least one button depressed. For touch, this is when there is physical contact with the digitizer. For pen, this is when the pen has physical contact with the digitizer.buttons property. For mouse, this is when the device has at least one button depressed. For touch, this is when there is physical contact with the digitizer. For pen, this is when either the pen has physical contact with the digitizer, or at least one button is depressed while hovering.pointerId) to produce additional events within the document, then that pointer is still considered active. Examples:
button propertybuttonbutton property in a pointermove event will be different from that in a mousemove event. For example, while moving the mouse with the right button pressed, the pontermove events will have the button value -1, but the mousemove events will have the button value 2.buttons property| Current state of device buttons | buttons |
|---|---|
| Mouse move with no buttons pressed | 0 |
| Left Mouse, Touch Contact, Pen contact (with no modifier buttons pressed) | 1 |
| Mouse moved with no buttons pressed, Pen moved while hovering with no buttons pressed | 0 |
| Left Mouse, Touch Contact, Pen contact | 1 |
| Middle Mouse | 4 |
| Right Mouse, Pen contact with barrel button pressed | 2 |
| Right Mouse, Pen barrel button | 2 |
| X1 (back) Mouse | 8 |
| X2 (forward) Mouse | 16 |
| Pen contact with eraser button pressed | 32 |
| Pen eraser button | 32 |
pointerenter eventpointerdown eventA user agent MUST fire a pointer event named pointerdown when a pointer enters the active buttons state. For mouse, this is when the device transitions from no buttons depressed to at least one button depressed. For touch, this is when physical contact is made with the digitizer. For pen, this is when the stylus makes physical contact with the digitizer.
A user agent MUST fire a pointer event named pointerdown when a pointer enters the active buttons state. For mouse, this is when the device transitions from no buttons depressed to at least one button depressed. For touch, this is when physical contact is made with the digitizer. For pen, this is when the pen either makes physical contact with the digitizer without any button depressed, or transitions from no buttons depressed to at least one button depressed while hovering.
pointerdown and pointerup are not fired for all of the same circumstances as mousedown and mouseup. See chorded buttons for more information.For input devices that do not support hover, a user agent MUST also fire a pointer event named pointerover followed by a pointer event named pointerenter prior to dispatching the pointerdown event.
pointerdown event (if the isPrimary property is true). This sets the PREVENT MOUSE EVENT FLAG on the pointer. Note, however, that this does not prevent the mouseover, mouseenter, mouseout, or mouseleave events from firing.pointermove eventpointerup eventA user agent MUST fire a pointer event named pointerup when a pointer leaves the active buttons state. For mouse, this is when the device transitions from at least one button depressed to no buttons depressed. For touch, this is when physical contact is removed from the digitizer. For pen, this is when the pen is removed from physical contact with the digitizer.
A user agent MUST fire a pointer event named pointerup when a pointer leaves the active buttons state. For mouse, this is when the device transitions from at least one button depressed to no buttons depressed. For touch, this is when physical contact is removed from the digitizer. For pen, this is when the pen is removed from the physical contact with the digitizer while no button is depressed, or transitions from at least one button depressed to no buttons depressed while hovering.
For input devices that do not support hover, a user agent MUST also fire a pointer event named pointerout followed by a pointer event named pointerleave after dispatching the pointerup event.
pointerdown and pointerup are not fired for all of the same circumstances as mousedown and mouseup. See chorded buttons for more information.