。微软实现了确定哪个（右/左）键被按下的能力。这里是一个链接 http://msdn.microsoft.com/ en-us / library / ms534630（VS.85）.aspx

我还在浏览器中发现了这篇关于按键，按键，按键事件的文章。
http://unixpapa.com/js/key.html

$ $ $ $'code $（'＃someelement'）。bind（'click'，function（event）{

if .ctrlKey）{
if（event.ctrlLeft）{
console.log（'ctrl-left'）;
}
else {
console.log（' ctrl-right'）;
}
}
if（event.altKey）{
if（event.altLeft）{
console.log（'alt-left '）;
}
else {
console.log（'alt-right'）;
}
}
if（event.shiftKey）{
if（event.shiftLeft）{
console.log（'shift-left'）;
}
else
{
console.log（'右移'）;
}
}
}）;

How could I identify which Ctrl / Shift / Alt keys are pressed in the following code ?

$("#my_id").click(function() {
    if (<left control key is pressed>) { alert("Left Ctrl"); }
    if (<right shift and left alt keys are pressed>) { alert("Right Shift + Left Alt"); }
});

Well you this wont work in all browsers just IE 8. Microsoft implemented the ability to determine which (right/left) key was pressed. Here is a link http://msdn.microsoft.com/en-us/library/ms534630(VS.85).aspx

I also found this wonder article about keypress, keyup, keydown event in browsers. http://unixpapa.com/js/key.html

$('#someelement').bind('click', function(event){ 

    if(event.ctrlKey) {
      if (event.ctrlLeft) {
        console.log('ctrl-left'); 
      }
      else {
        console.log('ctrl-right');
      }
    }
    if(event.altKey) {
      if (event.altLeft) {
        console.log('alt-left'); 
      }
      else {
        console.log('alt-right');
      }
    }
    if(event.shiftKey) {
      if (event.shiftLeft) {
        console.log('shift-left'); 
      }
      else
      {
        console.log('shift-right');
      }
    }
  });