Browser Mouse Event Test Page

This page contains a script for testing the events fired in different browsers when a mouse click occurs. My interest in this page is what events occur when a mouse click or double click takes place, and how different mouse buttons are identified.

Some results from some browsers are included in the tables below, though this is not meant to be comprehensive.

The degree of cross browser compatibility is not impressive.

LEFT BUTTON

Internet Explorer Mozilla (Windows or Unix before 1.7)
Netscape (6.1 to 7.1) Mozilla (Macintosh or from 1.7)
Netscape 7.2 (probably) Netscape 4 Opera Safari

Single
Click Double
Click Single
Click Double
Click Single
Click Double
Click Single
Click Double
Click Single
Click Double
Click Single
Click Double
Click

DOWN mousedown mousedown mousedown mousedown mousedown mousedown mousedown mousedown mousedown mousedown mousedown mousedown

UP mouseup
click mouseup
click mouseup
click mouseup
click mouseup
click mouseup
click mouseup
click mouseup
click mouseup
click mouseup
click mouseup
click mouseup
click

DOWN - mousedown
mousedown mousedown mousedown click
dblclick mousedown

UP mouseup
dblclick mouseup
click
dblclick mouseup
click
dblclick mouseup
click mouseup mouseup
dblclick

event.which undefined 1 1 1 1

event.button 1 0 (1 for Netscape 6.0) undefined 1 1

MIDDLE BUTTON

Internet Explorer Mozilla (through 1.6)
Netscape (6.1 to 7.1) Mozilla (from 1.7)
Netscape 7.2 (probably) Netscape 4 Opera

Single
Click Double
Click Single
Click Double
Click Single
Click Double
Click Single
Click Double
Click Single
Click Double
Click

Disabling paste requires config file edit Disabling paste requires config file edit Cannot disable paste? Cannot disable browser actions

DOWN ? ? mousedown mousedown mousedown mousedown mousedown mousedown mousedown mousedown

UP ? ? mouseup mouseup
click mouseup mouseup mouseup mouseup - -

DOWN ? mousedown
mousedown mousedown mousedown mousedown

UP ? mouseup mouseup mouseup
click -

event.which undefined 2 2 3

event.button 4 1 (2 for Netscape 6.0) undefined 3

RIGHT BUTTON

Internet Explorer Mozilla (through 1.6)
Netscape (6.1 to 7.1) Mozilla (from 1.7)
Netscape 7.2 (probably) Netscape 4 Opera

Disabling context menu requires some weird stuff Only versions after 7.23 with File > Preferences > Multimedia > Javascript options > Allow script to receive right clicks

Single
Click Double
Click Single
Click Double
Click Single
Click Double
Click Single
Click Double
Click Single
Click Double
Click

DOWN mousedown mousedown mousedown
contextmenu mousedown
contextmenu mousedown
contextmenu mousedown
contextmenu mousedown mousedown mousedown mousedown

UP mouseup
contextmenu mouseup
contextmenu mouseup mouseup mouseup mouseup - - - -

DOWN mousedown mousedown
contextmenu
mousedown
contextmenu mousedown
contextmenu mousedown mousedown

UP mouseup
contextmenu mouseup mouseup - -

event.which undefined 3 3 2

event.button 2 2 (3 for Netscape 6.0) undefined 2