JS gets the key value of the left and right mouse key method _javascript Tips

function test () 
{ 
alert (event.x+ "" +event.y); 
alert (Event.button); 
} 
/* Right-click menu does not show * 
/document.oncontextmenu=function () 
{return 
false; 
} 
/*document.onmousedown=function () 
{ 
if (event.button==1) 
{alert ("left")} 
if (event.button==2 
{alert (' right ')} 
}*/ 
document.onkeydown=function () 
{ 
alert (event.keycode); 
} 
</script>

Event.x Mouse Axis
Event.y Mouse longitudinal axis
Event.keycode Keyboard Value
Events.button==0 default. No buttons were pressed.
Events.button==1 left mouse button
events.button==2 right mouse button
Events.button==3 the right mouse button and press
Events.button==4 The middle mouse button
Events.button==5 the left mouse button and the middle key pressed at the same time
Events.button==6 the right mouse button and the middle key at the same time
Events.button==7 all three keys are pressed