导航条随滚动条左右滚动

2013-07-09

导航条随滚动条上下滚动导航条随滚动条上下滚动，就像美丽说的导航条一样。没办法，本人js太差，望前辈告知[解

导航条随滚动条上下滚动
导航条随滚动条上下滚动，就像美丽说的导航条一样。没办法，本人js太差，望前辈告知
[解决办法]


<!DOCTYPE HTML>
<html>
    <head>
        <meta charset="gb2312" />
        <title></title>
        <style>
            body {
                height:2000px;
            }
            div {
                position:absolute; right:40px; top:40px;
                width:90%; height:30px;
                background:#ddd;
            }
        </style>
    </head>
    <body>
        <div id="test">滚动试试</div>
        <script>
            function toolbar(el){
                el = typeof el == 'string' ? document.getElementById(el) : el;
                var elTop = el.offsetTop;
                var sTop = 0;
                window.onscroll = function(){
                    sTop = document.body.scrollTop 
------解决方案--------------------  
 document.documentElement.scrollTop;
                    if( sTop > elTop ){
                        el.style.top = sTop + 'px';
                    }else{
                        el.style.top = elTop + 'px';
                    }
                }
            }
            toolbar('test');
        </script>
    </body>
</html>

这个意思？
[解决办法]

引用:

HTML code

<!DOCTYPE HTML>
<html>
    <head>
        <meta charset="gb2312" />
        <title></title>
        <style>
            body {
                height:2000px;
            }
            div……

楼上的意思是对的，不过你这样上面那个div随着滚动条上下移动晃动很厉害我把你代码改了下
<!DOCTYPE HTML>
<html>
    <head>
        <title></title>
        <style>
            body {
                height:2000px;
            }
            div {
                position:absolute; right:40px; top:40px;

                width:90%; height:30px;
                background:#ddd;
            }
        </style>
    </head>
    <body>
        <div id="test">滚动试试</div>
        <script type="text/javascript">
            function toolbar(el) {
                el = typeof el == 'string' ? document.getElementById(el) : el;
                var elTop = el.offsetTop;
                var sTop = 0;
                window.onscroll = function () {
                    sTop = document.body.scrollTop
[解决办法]
document.documentElement.scrollTop;
                    if (sTop > elTop) {
                        el.style.top = "0";
                        el.style.position = "fixed"
                    } else {
                        el.style.top = elTop + 'px';
                        el.style.position = "absolute"
                    }
                }
            }

            toolbar('test');
        </script>
    </body>
</html>

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导航条随滚动条左右滚动