如何计算工具栏，地址栏和其他导航工具的高度（以像素为单位）？ [英] How do i calculate the height of toolbars, address bars and other navigation tools in pixels?

问题描述

基本上我需要知道y轴距离屏幕左上角有多少像素，直到我到达实际的Web窗口。有没有人有任何想法......？

Basically i need to know how many pixels the y axis is from the top left of the screen until i reach the actual web window. Does anyone have any ideas...?

推荐答案

我不知道如何返回外部组件的高度，但是我从 http://www.alexandre-gomes.com/?p=115 并将其调整为还返回滚动条高度。

I don't know how you can return the height of external component, but I took this from http://www.alexandre-gomes.com/?p=115 and adapted it to also return scroll bar height.

• Chrome


• FF 9 +


• IE9 （谢谢 Pax0r ）


• Opera （谢谢 Pax0r ）

• Chrome
• FF 9+
• IE9 (thank you Pax0r)
• Opera (thank you Pax0r)

如果有人可以在其他浏览器中测试它给我反馈，我会相应地修改这个答案。

If anyone can test it in other browsers and give me feedback, I will modify this answer accordingly.

jQuery.getScrollBarSize = function() {
   var inner = $('<p></p>').css({
      'width':'100%',
      'height':'100%'
   });
   var outer = $('<div></div>').css({
      'position':'absolute',
      'width':'100px',
      'height':'100px',
      'top':'0',
      'left':'0',
      'visibility':'hidden',
      'overflow':'hidden'
   }).append(inner);

   $(document.body).append(outer);

   var w1 = inner.width(), h1 = inner.height();
   outer.css('overflow','scroll');
   var w2 = inner.width(), h2 = inner.height();
   if (w1 == w2 && outer[0].clientWidth) {
      w2 = outer[0].clientWidth;
   }
   if (h1 == h2 && outer[0].clientHeight) {
      h2 = outer[0].clientHeight;
   }

   outer.detach();

   return [(w1 - w2),(h1 - h2)];
};

alert( $.getScrollBarSize() ); // in Chrome = [15,15] in FF = [16,16]

没有JQuery

Without JQuery

function getScrollBarSize () {  
   var inner = document.createElement('p');  
   inner.style.width = "100%";  
   inner.style.height = "100%";  

   var outer = document.createElement('div');  
   outer.style.position = "absolute";  
   outer.style.top = "0px";  
   outer.style.left = "0px";  
   outer.style.visibility = "hidden";  
   outer.style.width = "100px";  
   outer.style.height = "100px";  
   outer.style.overflow = "hidden";  
   outer.appendChild (inner);  

   document.body.appendChild (outer);  

   var w1 = inner.offsetWidth;  
   var h1 = inner.offsetHeight;
   outer.style.overflow = 'scroll';  
   var w2 = inner.offsetWidth;  
   var h2 = inner.offsetHeight;
   if (w1 == w2) w2 = outer.clientWidth;
   if (h1 == h2) h2 = outer.clientHeight;   

   document.body.removeChild (outer);  

   return [(w1 - w2),(h1 - h2)];  
};

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