Answer / prashant ramkishan muttepawar

syntax :: alert("You pressed button: " + event.button)

Return Value ::A Number, representing which mouse button that was pressed when the mouse event occured.

Possible values:
0 : Left mouse button
1 : Wheel button or middle button (if present)
2 : Right mouse button
Note: Internet Explorer 8 and earlier has different return values:

1 : Left mouse button
2 : Right mouse button
4 : Wheel button or middle button (if present)
Note: For a left-hand configured mouse, the return values are reversed

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