div跟滚动条移动
function getScroll() { var t, l, w, h; if (document.documentElement && document.documentElement.scrollTop) { t = document.documentElement.scrollTop; l = document.documentElement.scrollLeft; w = document.documentElement.scrollWidth; h = document.documentElement.scrollHeight; } else if (document.body) { t = document.body.scrollTop; l = document.body.scrollLeft; w = document.body.scrollWidth; h = document.body.scrollHeight; } return { t: t, l: l, w: w, h: h }; } window.onscroll = function() { var v = getScroll(); var e = document.getElementById("timediv"); e.style.position = "absolute"; e.style.top = v.t; //纵滚动条离顶部距离 e.style.left = "1140px"; //离左端距离 }