如何在执行jquery事件后保持页面滚动位置？

Question

如何在执行jquery事件后保持页面滚动位置？

mar*_*rky 39 html javascript jquery

我已经搜索了高低的答案并找到了类似的问题示例,但答案并不适用于我的场景.现实是我是新手,因此我没有技能来调整我发现的问题的答案.

问题:

我有一个Div,当点击缩略图时,Div图像会通过JavaScript/jQuery脚本替换另一个图像(我不确定是否有人可以澄清).这工作正常,但问题是页面滚动回到顶部,然后用户必须向下滚动以查看替换后的图像.

我已经在线查看并发现返回false:在JavaScript中可能会有所帮助但是我已经查看并且返回false已经存在.

我使用的另一个选项是基于JavaScript cookie的解决方案,其中发送cookie,并且通过读取cookie来维护浏览器滚动位置但是我似乎无法使该解决方案起作用,我认为问题可能是由此引起的因为我在当地托管,但我可能错了......

第三个是使用PHP脚本,但我还没有找到关于这个方法的明确答案,这也意味着我将不得不学习PHP(我确信无论如何我都必须及时学习).

这是JavaScript:

<script type="text/javascript">

 $(document).ready(function() {
  $('.galleryicon').live("click", function() {

    $('#mainImage').hide();
    $('#cakebox').css('background-image', "url('ajax-loader.gif')");
    var i = $('<img />').attr('src',this.href).load(function() {
        $('#mainImage').attr('src', i.attr('src'));
        $('#cakebox').css('background-image', 'none');
        $('#mainImage').fadeIn();
    });
    return false; 
   });
 });

</script>

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这是html:

<div class="cakecont">

  <div id="cakebox">

 <img src="../images/cakes/babycake1.png" alt="Main Image" id="mainImage"/>

     <div class="pageinfo2">
     <h3>Cake Type 1</h3>
     <h6>£2.00</h6>
     </div>
     <div class="infobox">
     <h6> Description </h6>
     </div> 

      <div class="gallerybox">
      <a href="../images/cakes/babycaketop.png" class="galleryicon">
      <img src="../images/thumbs/babycaketopsml.png" alt="Thumbnail 2"/></a>

      <a href="../images/cakes/babycake1.png" class="galleryicon">
      <img src="../images/thumbs/babycakesml.png" alt="Image 1"/></a>
   </div>
  </div>
</div>

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这里有一个工作演示的链接http://micahcarrick.com/code/jquery-image-swap/index.html

我试图自己解决这个问题.这是我到目前为止关于建立我的网站的第一个问题,我对谷歌提供的所有学习和过去问题的补救措施,这一点已经躲过了我的搜索引擎技能.

下面我添加了页面的所有html,以防可能有其他脚本覆盖"新"修改的JavaScript -

 <!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>Cupcakes &amp; Cakes for Birthday/Wedding Gift in Bournemouth Dorset - SweetVision</title>
   <meta name="keywords" content="cupcakes, cake, gift, wedding, birthday, Bournemouth, Dorset" />
 <meta name="description" content="For the finest Cupcakes and Cakes in Bournemouth Dorset look no further, Sweetvision specialise in baked goods for Weddings, Birthdays, Baby Showers, Easter, Halloween, Christmas" />
 <meta name="robots" content="ALL" />
 <meta http-equiv= "Content-Language" content="en" />
 <meta name="Publisher" content="Sweet Vision" />
 <meta name="Copyright" content="Copyright 2012, Sweet Vision, All rights reserved." />
 <meta name="Author" content="Mark Webb for Sweet Vision - www.sweetvision.co.uk" />

  <link href="../images/homepage/favicon.ico" type="image/vnd.microsoft.icon" rel="shortcut icon" />

  <link href="../root/css/sweetvision.css" rel="stylesheet" type="text/css" />

  <script src="../js/jquery-1.4.2.min.js" type="text/javascript"></script>

  <script type="text/javascript">

 $(document).ready(function() {   
$('.galleryicon').live("click", function(e) {  // the (e) represent the event
$('#mainImage').hide();     
$('#cakebox').css('background-image', "url('ajax-loader.gif')");     
var i = $('<img />').attr('src',this.href).load(function() {         
  $('#mainImage').attr('src', i.attr('src'));         
  $('#cakebox').css('background-image', 'none');         
  $('#mainImage').fadeIn();     
 });
 e.preventDefault(); //Prevent default click action which is causing the 
 return false;       //page to scroll back to the top
 });  
});


</script>

<script src="../js/s3Slider.js" type="text/javascript"></script> 

 <script type="text/javascript">

 $(document).ready(function() {
 $('#s3slider').s3Slider({
  timeOut: 4000
  });
}); 
  </script>

  <script src="../js/SpryMenuBar.js" type="text/javascript"></script>
  <link href="../root/css/SpryMenuBarHorizontal.css" rel="stylesheet" type="text/css" />

  </head> 


 <body>



  <div class="container">


 <div class="sprybox">
   <ul id="check_menu" class="MenuBarHorizontal">
    <li><a href="../root/index.html">Home</a></li>
    <li><a href="../root/aboutus.html" class="MenuBarItemSubmenu">About Us</a>
      <ul>
        <li><a href="../root/contactus.html">Contact</a></li>
        <li><a href="../root/news.html">News</a></li>
        <li><a href="../root/events.html">Events</a></li>
      </ul>
    </li>
       <li><a href="../root/ourmenu.html">Our Menu</a></li>
         <li><a href="gallery.html">Gallery</a></li>
          </ul>
        <div class="mainmenu">
           <a href="../root/mainmenu.html">
           <img src="../images/buttons/mainmenu.png" />
           </a>
       </div>
        <div class="backbutton">
        <a href="javascript:history.go(-1)"> 
        <img src="../images/buttons/Backbutton.png" /></a>
      </div>

    </div>  <!-- end.header --><!--end of sprybox -->

  <!--end div element -->


 <!-- thumbnails are links to the full size image -->

  <div class="cakecont">

 <div id="cakebox">

  <img src="../images/cakes/babycake1.png" alt="Main Image" id="mainImage"/>

     <div class="pageinfo2">
     <h3>Cake Type 1</h3>
     <h6>£2.00</h6>
     </div>
     <div class="infobox">
     <h6> Description </h6>
     </div> 

 <div class="gallerybox">
      <a href="../images/cakes/babycaketop.png" class="galleryicon">
      <img src="../images/thumbs/babycaketopsml.png" alt="Thumbnail 2"/></a>

      <a href="../images/cakes/babycake1.png" class="galleryicon">
      <img src="../images/thumbs/babycakesml.png" alt="Image 1"/></a>
  </div>
  </div>
</div>



 <div class="footer">
  <p>Copyright &copy; 2012 by Mark Webb. All rights reserved.</p>
 </div> <!-- end .footer -->

</div> <!-- end .container -->


 <script type="text/javascript">
 var MenuBar1 = new Spry.Widget.MenuBar("check_menu",{imgDown:"SpryAssets/SpryMenuBarDownHover.gif",   imgRight:"SpryAssets/SpryMenuBarRightHover.gif"});
  </script>

 <script type="text/javascript">

  var _gaq = _gaq || [];
 _gaq.push(['_setAccount', 'UA-29457683-1']);
  _gaq.push(['_trackPageview']);

   (function() {
  var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
  ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') +    '.google-analytics.com/ga.js';
  var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
  })();

 </script>


 </body>
</html>

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Answer 1

Bri*_*y37 59

您可以保存当前滚动量,然后稍后进行设置:

var tempScrollTop = $(window).scrollTop();

..//Your code

$(window).scrollTop(tempScrollTop);

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Answer 2

Nas*_*ibi 34

对于所有从谷歌来到这里并使用锚元素来解雇事件的人,请确保同样取消点击:

<a  
href='javascript:void(0)'  
onclick='javascript:whatever causing the page to scroll to the top'  
></a>

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非常感谢你,我试图阻止$('form')上的滚动.report(function {}); 与e.preventDefault(); 如果我把$(窗口).scrollTop(tempScrollTop); 在回归之前,或者即使我回来了,它仍然会回到顶部.这对我有用. (2认同)
@Akeel我认为通过使用诸如href =“＃”之类的默认操作，会将默认操作应用于浏览器，从而使其滚动到顶部（通过使用Nasser Al-Wohaibi的建议或类似的东西重定向到http .... /＃。此-Put返回false；在单击处理程序的底部，不会遵循href-在处理程序中的事件上调用preventDefault：function（e）{e.preventDefault（）; //您强制执行的事件处理代码}浏览器不执行默认操作 (2认同)

Answer 3

Mar*_*ers 7

请尝试以下代码,以防止默认行为滚动回页面顶部

$(document).ready(function() {   
  $('.galleryicon').live("click", function(e) {  // the (e) represent the event
    $('#mainImage').hide();     
    $('#cakebox').css('background-image', "url('ajax-loader.gif')");     
    var i = $('<img />').attr('src',this.href).load(function() {         
      $('#mainImage').attr('src', i.attr('src'));         
      $('#cakebox').css('background-image', 'none');         
      $('#mainImage').fadeIn();     
    });
  e.preventDefault(); //Prevent default click action which is causing the 
  return false;       //page to scroll back to the top
  });  
});

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有关event.preventDefault()的更多信息,请查看官方文档.

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