2.3.4.45 onselectstart
Quirks Mode, IE7 Mode, IE8 Mode, IE9 Mode, IE10 Mode, IE11 Mode, and EdgeHTML Mode (All Versions)
onselectstart of
type Function
Occurs as the object is being selected.
To invoke, begin selecting one or more objects.
Bubbles: Yes
Cancelable: Yes
Context Info: offsetX, offsetY
This attribute is an extension to HTMLElement.
See also onselect.