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  • gotop(返回顶部)

    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
            "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
        <title></title>
    </head>
    <body>
    <style>
        #goTopBtn {
            position: fixed;
            line-height:36px;
            width:36px;
            bottom:35px;
            right:235px;
            height:36px;
            cursor:pointer;
            display:block;
            color:red;
            font-size:40px;
            }
    </style>
    <br/>
    <p style="text-align:center;font-family:Georgia, 'Times New Roman', Times, serif;font-size:24px;font-weight:bold;"></p>
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    <div id="goTopBtn">1321687461321</div>
    <script type="text/javascript" src="http://apps.bdimg.com/libs/jquery/2.1.1/jquery.js"></script>
    <!--<script type="text/javascript" src="http://apps.bdimg.com/libs/jquery/2.1.1/jquery.min.js"></script>-->
    
    <script type="text/javascript">
            //返回顶部
            $(document).ready(function(){
                $(window).scroll(function(){
                    var sc=$(window).scrollTop();
                    var rwidth=$(window).width()
                    if(sc>0){
                        $("#goTopBtn").css("display","block");
            //            $("#goTopBtn").css("left",(rwidth-36)+"px")
                    }else{
                        $("#goTopBtn").css("display","none");
                    }
                })
                $("#goTopBtn").click(function(){
                    var sc=$(window).scrollTop();
                    $('body,html').animate({scrollTop:0},500);
                })
            })
    </script>
    </body>
    </html>
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  • 原文地址:https://www.cnblogs.com/-CLAY-/p/gotop.html
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