js与jquery获得页面大小、滚动条位置、元素位置 //页面位置及窗口大小 function GetPageSize() { var scrW, scrH; if(window.innerHeight && window.scrollMaxY) { // Mozilla scrW = window.innerWidth + window.scrollMaxX; scrH = window.innerHeight + window.scrollMaxY; } else if(document.body.scrollHeight > document.body.offsetHeight) { // all but IE Mac scrW = document.body.scrollWidth; scrH = document.body.scrollHeight; } else if(document.body) { // IE Mac scrW = document.body.offsetWidth; scrH = document.body.offsetHeight; } var winW, winH; if(window.innerHeight) { // all except IE winW = window.innerWidth; winH = window.innerHeight; } else if (document.documentElement && document.documentElement.clientHeight) { // IE 6 Strict Mode winW = document.documentElement.clientWidth; winH = document.documentElement.clientHeight; } else if (document.body) { // other winW = document.body.clientWidth; winH = document.body.clientHeight; } // for small pages with total size less then the viewport var pageW = (scrW<winW) ? winW : scrW; var pageH = (scrH<winH) ? winH : scrH; return {PageW:pageW, PageH:pageH, WinW:winW, WinH:winH};
}; //滚动条位置 function GetPageScroll() { var x, y; if(window.pageYOffset) { // all except IE y = window.pageYOffset; x = window.pageXOffset; } else if(document.documentElement && document.documentElement.scrollTop) { // IE 6 Strict y = document.documentElement.scrollTop; x = document.documentElement.scrollLeft; } else if(document.body) { // all other IE y = document.body.scrollTop; x = document.body.scrollLeft; } return {X:x, Y:y};