1.       做手机Web开发做浏览器兼容用到了，所以在网上找了些汇总下。
    3. alert($(window).height()); //浏览器当前窗口可视区域高度 
    4. alert($(document).height()); //浏览器当前窗口文档的高度 
    5. alert($(document.body).height());//浏览器当前窗口文档body的高度 
    6. alert($(document.body).outerHeight(true));//浏览器当前窗口文档body的总高度 包括border padding margin 
    7. alert($(window).width()); //浏览器当前窗口可视区域宽度 
    8. alert($(document).width());//浏览器当前窗口文档对象宽度 
    9. alert($(document.body).width());//浏览器当前窗口文档body的高度 
    10. alert($(document.body).outerWidth(true));//浏览器当前窗口文档body的总宽度 包括border padding margin 
    12. // 获取页面的高度、宽度
    13. function getPageSize() {
    14.     var xScroll, yScroll;
    15.     if (window.innerHeight && window.scrollMaxY) {
    16.         xScroll = window.innerWidth + window.scrollMaxX;
    17.         yScroll = window.innerHeight + window.scrollMaxY;
    18.     } else {
    19.         if (document.body.scrollHeight > document.body.offsetHeight) { // all but Explorer Mac    
    20.             xScroll = document.body.scrollWidth;
    21.             yScroll = document.body.scrollHeight;
    22.         } else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari    
    23.             xScroll = document.body.offsetWidth;
    24.             yScroll = document.body.offsetHeight;
    25.         }
    26.     }
    27.     var windowWidth, windowHeight;
    28.     if (self.innerHeight) { // all except Explorer    
    29.         if (document.documentElement.clientWidth) {
    30.             windowWidth = document.documentElement.clientWidth;
    31.         } else {
    32.             windowWidth = self.innerWidth;
    33.         }
    34.         windowHeight = self.innerHeight;
    35.     } else {
    36.         if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode    
    37.             windowWidth = document.documentElement.clientWidth;
    38.             windowHeight = document.documentElement.clientHeight;
    39.         } else {
    40.             if (document.body) { // other Explorers    
    41.                 windowWidth = document.body.clientWidth;
    42.                 windowHeight = document.body.clientHeight;
    43.             }
    44.         }
    45.     }       
    46.     // for small pages with total height less then height of the viewport    
    47.     if (yScroll < windowHeight) {
    48.         pageHeight = windowHeight;
    49.     } else {
    50.         pageHeight = yScroll;
    51.     }    
    52.     // for small pages with total width less then width of the viewport    
    53.     if (xScroll < windowWidth) {
    54.         pageWidth = xScroll;
    55.     } else {
    56.         pageWidth = windowWidth;
    57.     }
    58.     arrayPageSize = new Array(pageWidth, pageHeight, windowWidth, windowHeight);
    59.     return arrayPageSize;
    60. }
    62. // 滚动条
    63. document.body.scrollTop;
    64. $(document).scrollTop();
    65.