Categories: event

javascript event button

@March 15, 2008, 1:22 a.m.

button

Firefox/Netscape/NN 6 IE 4 Chrome/Safari/DOM 2

Read-only

Inidicates which mouse button was pressed to trigger the mouse event. Be aware that the typical Macintosh has only a one-button mouse. Also, if you want to intercept the right-click context menu in IE/Windows, use the oncontextmenu event handler.

A significant discrepancy exists among DOM specifications and implementations with respect to the numbers returned for this property. The W3C DOM, as implemented in Netscape 6, specifies a value of zero to indicate the left (primary) button. IE for Windows supports additional values for mouse button combinations.

Example

if (evt.button == 2) {
    // handle event for right button
}

Value

Integer value according to the following table.

Button(s)	IE	NN 6	W3C DOM
No button	0	null	null
Left (primary)	1	0	0
Middle	4	1	1
Right	2	2	2
Left + Right	3	n/a	n/a
Left + Middle	5	n/a	n/a
Right + Middle	6	n/a	n/a
Left + Middle + Right	7	n/a	n/a

Default

javascript event bubbles

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