隐藏md-down无法正常工作

Question

我想隐藏移动设备和平板电脑上显示的模式。

在引导，我使用隐藏-MD-下来，这是工作，但它不是工作了，我没有改变什么：

$(function(){ 
 
    $('##myModal').modal('show'); 
 
});

<div class="ie-only" style="overflow-y:hidden;"> 
 
     \t <div class="modal fade in hidden-md-down" id="myModal" aria-hidden="false"> 
 
      \t <div class="modal-dialog modal-md custom-height-modal"> 
 
       \t <div class="modal-content"> 
 
        \t   \t <div class="modal-header topGrad" 
 
         \t <button type="button" class="close" data-dismiss="modal">x</button> 
 
          <h2 class="modal-header" style=""filter: alpha(opacity=200);">Outdated Browser Detected</h2><p>Our website has detected that you are using an outdated browser. Using your current browser will prevent you from accesing featuers on your website. An upgrade is not required, but is strongly recommend to improve your browsing experince on our website.<br /><br /> 
 
          <b>Use the links below to download a new browser or upgrade your existing browser.</b></p> 
 
         </div><!---Modal-Header Div---> 
 
         <div class="modal-body"> 
 
         \t <div class="row"> 
 
           <div class="col-sm-offset-2 col-sm-2 overrides-col-md-offset-2 col-md-2 text-center"> 
 
            <div class="hidden-xs"><a target="_blank" href="https://www.google.com/chrome/browser/desktop/index.html"><img alt="Chrome" height="200px" src="/default/images/chrome.png" width="440px" /></a></div> 
 
         
 
            <h6><a class="text-black" target="_blank" href="https://www.google.com/chrome/browser/desktop/index.html">Chrome</a></h6> 
 
           </div> 
 
         
 
           <div class="col-sm-2 col-md-2 text-center"> 
 
            <div class="hidden-xs"><a target="_blank" href="https://www.mozilla.org/en-US/firefox/new/?f=86"><img alt="Firefox" src="/default/images/firefox.png" /></a></div> 
 
         
 
            <h6><a class="text-black" target="_blank" href="https://www.mozilla.org/en-US/firefox/new/?f=86">Firefox</a></h6> 
 
           </div> 
 
         
 
           <div class="col-sm-2 col-md-2 text-center"> 
 
            <div class="hidden-xs"><a target="_blank" href="https://www.microsoft.com/en-us/download/internet-explorer.aspx"><img alt="Internet Explorer" src="/default/images/internet_explorer.png" /></a></div> 
 
         
 
            <h6><a target="_blank" class="text-black" href="https://www.microsoft.com/en-us/download/internet-explorer.aspx">Internet Explorer</a></h6> 
 
           </div> 
 
         
 
           <div class="col-sm-2 col-md-2 text-center"> 
 
            <div class="hidden-xs"><a target="_blank" href="https://support.apple.com/downloads/safari"><img alt="Safari" src="/default/images/safari.png" /></a></div> 
 
         
 
            <h6><a class="text-black" target="_blank" href="https://support.apple.com/downloads/safari">Safari</a></h6> 
 
           </div> 
 
\t \t \t \t \t \t \t </div> 
 
         </div><!---Modal-Body Div---> 
 
         <div class="modal-footer botGrad" <!---style="background-image:('/mura-6.2.6407/Regal-en-us/images/extended_bottom_provider.gif');"---> style="background-color:##4f89cc; filter: alpha(opacity=80);"> 
 
         \t <p class="text-center"><a class="btn btn-default" data-dismiss="modal" style="filter: alpha(opacity=100);">Close</a></p> 
 
         </div><!---Modal-Footer Div---> 
 
        </div><!---Modal-Content Div---> 
 
       </div><!---Custom Height Div---> 
 
      </div><!---Modal Fade in Div---> 
 
     </div><!---Start of Modal Div---> \t \t \t \t 
 
\t \t <!--End of Modal container-->

任何帮助，将不胜感激。

Answer 1

在Bootstrap 3类是hidden-md，hidden-sm，hidden-xs等。

的hidden-md-down类只在引导4.存在