= function( e ){
alert(getButton(e)) // W3C is to get the mouse button 0 means the left button 1 means the middle button 2 means the right button while IE browser means the left button 4 means the middle button 2 means the right button. The IE browser here is mainly browsers below IE8
};
function getButton(e){
/*
1. Both IE and Chrome support
2. But Chrome also supports W3C
3. So, if both W3C and IE support it, then W3C is already standardized
*/
if( e ){ // As the first judgment of Chrome, W3C is used as the standard
return ;
}else if( ){
switch( ){
case 1 : return 0; // Return the value of the left mouse button
case 4: return 1; // Return the value of the middle mouse button
case 2: return 2; // Return the value of the right mouse button
case 0 : return 2; // Return the value of the right mouse button. The main reason is that the 360 browser will return the 0 returned in the IE browser. It means the value returned when the mouse button is not pressed.
};
};
};