Javascript菜单在IE8中不起作用

时间:2009-07-07 19:24:19

标签: javascript internet-explorer-8

网站位于http://danrowley.net/backstop_sandbox/

当您将鼠标悬停在其上时,下拉菜单不会保持打开状态。

Javascript是:

var DDSPEED = 10;
var DDTIMER = 15;

// main function to handle the mouse events //
function ddMenu(id,d){
  var h = document.getElementById(id + '-ddheader');
  var c = document.getElementById(id + '-ddcontent');
  clearInterval(c.timer);
  if(d == 1){
    clearTimeout(h.timer);
    if(c.maxh && c.maxh <= c.offsetHeight){return}
    else if(!c.maxh){
      c.style.display = 'block';
      c.style.height = 'auto';
      c.maxh = c.offsetHeight;
      c.style.height = '0px';
    }
    c.timer = setInterval(function(){ddSlide(c,1)},DDTIMER);
  }else{
    h.timer = setTimeout(function(){ddCollapse(c)},50);
  }
}

// collapse the menu //
function ddCollapse(c){
  c.timer = setInterval(function(){ddSlide(c,-1)},DDTIMER);
}

// cancel the collapse if a user rolls over the dropdown //
function cancelHide(id){
  var h = document.getElementById(id + '-ddheader');
  var c = document.getElementById(id + '-ddcontent');
  clearTimeout(h.timer);
  clearInterval(c.timer);
  if(c.offsetHeight < c.maxh){
    c.timer = setInterval(function(){ddSlide(c,1)},DDTIMER);
  }
}

// incrementally expand/contract the dropdown and change the opacity //
function ddSlide(c,d){
  if(d>0) c.style.display='block';
  var currh = c.offsetHeight;
  var dist;
  if(d == 1){
    dist = (Math.round((c.maxh - currh) / DDSPEED));
  }else{
    dist = (Math.round(currh / DDSPEED));
  }
  if(dist <= 1 && d == 1){
    dist = 1;
  }
  c.style.height = currh + (dist * d) + 'px';
  c.style.opacity = currh / c.maxh;
  c.style.filter = 'alpha(opacity=' + (currh * 100 / c.maxh) + ')';
  if((currh + (dist * d))<10 && d<0) c.style.display='none';

  if((currh < 2 && d != 1) || (currh > (c.maxh - 2) && d == 1)){
    clearInterval(c.timer);
  }
}

2 个答案:

答案 0 :(得分:1)

很可能(没有IE8方便我害怕)这是因为你在onmouseover上的内容后触发了onmouseout,可能是由于布局,但是,嘿,这是IE。

说实话,在这里重新发明轮子是不可取的 - 我强烈建议你从jQuery或类似的东西中获得一个成熟的菜单小部件。

答案 1 :(得分:0)

您可以尝试的一件事是改变兼容性。转到工具(下拉菜单) - 单击兼容性视图。

这解决了我的问题,无需更改任何设置。

祝你好运