JavaScript检测单击哪个两个键盘键

Question

我有一个html页面，上面有菜单。菜单有JavaScript。在此JavaScript中，如果按下了键盘键1，则我调用第一个菜单的链接，这很好，但是现在要求增加到17-18菜单。也就是说，如果用户按16（即键1，然后键6）必须显示第16个编号菜单。我想帮助确定同时按下哪个两个键。

if(event.keyCode==49)
            {
                self.location="pages/abc/finishgoods.jsp";
            }
            if(event.keyCode==50)
            {
                window.navigate("pages/submenu.jsp");
            }

任何人都可以帮助我检测到这一点。我无法使用jQuery，因为我的页面是IE 6

Answer 1

沿这些行（未经测试，但理论在这里）

var current_keys = [], // to store keypresses
    key_timer;
// on press, store the current key and give the user a little while to press another
// on keypress {
  current_keys.push(event.keyCode);
  clearTimeout(keyTimer); // refresh the timer
  keyTimer = setTimeout(interpret_keys, 250);
// }
// they've had their chance, work out what they pressed
function interpret_keys ()
{
  var keys = -1
      key,
      i = 0;
  for (i; i < current_keys.length; i++)
  {
    key = current_keys[i] - 48; // turn 48 to 0, 49 to 1, etc
    key >= 0 && key <= 9 && keys += '' + key; // only 0-9 is valid here
  }
  keys = parseInt(keys); // make sure it's a number
  current_keys = []; // reset the tracking variable
  // keys now contains (theoretically) a number such as 1, 2, 16, etc, which can map to your selectable item
}