当div中绑定数据,给它一个属性overflow-y: scroll,添加长度大小,使其能够出现滚动条;每次刷新的时候滚动条总是会出现在最上方,这使我很头疼,经过查阅网上资料,返现两种方法可行。如下:
第一种方案
将上一个页面的div的scrolltop距离长度记录在cookie中,然后通过js调整刷新页面时的长度记录,代码如下:
js代码:
<script> var _h = 0; function SetH(o) { _h = o.scrollTop SetCookie("a", _h) } window.onload = function () { document.getElementById("x").scrollTop = GetCookie("a");//页面加载时设置scrolltop高度 } function SetCookie(sName, sValue) { document.cookie = sName + "=" + escape(sValue) + "; "; } function GetCookie(sName) { var aCookie = document.cookie.split("; "); for (var i = 0; i < aCookie.length; i++) { var aCrumb = aCookie[i].split("="); if (sName == aCrumb[0]) return unescape(aCrumb[1]); } return 0; } </script>
html中代码如下:
<div onscroll="SetH(this)"> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> <p>1</p> </div>
第二种方案
1.通过div的onscroll事件记录滚动条的scrollTop值,设置到document.cookie
2.页面加载时再读取document.cookie的值,设置给div的scrollTop
js代码实现:
<script type="text/javascript"> function KeepScrollBar() { var scrollPos; if (typeof window.pageYOffset != 'undefined') { scrollPos = window.pageYOffset; } else if (typeof document.body != 'undefined') { scrollPos = document.getElementById('divContent').scrollTop; } document.cookie = "scrollTop=" + scrollPos; } window.onload = function (){ if (document.cookie.match(/scrollTop=([^;]+)(;|$)/) != null) { var arr = document.cookie.match(/scrollTop=([^;]+)(;|$)/); document.getElementById('divContent').scrollTop = parseInt(arr[1]); } } </script>
html:
<div data-role="tab-content" data-id="course-a" runat="server" onscroll= "KeepScrollBar()"> <p> 1</p> <p> 2</p> <p> 3</p> <p> 4</p> <p> 5</p> <p> 6</p> <p> 7</p> <p> 8</p> <p> 9</p> <p> 10</p> <p> 11</p> <p> 12</p> <p> 13</p> <p> 14</p> <p> 15</p> <p> 16</p> </div>