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Editorial Team
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Asked: 2026-05-30T09:00:50+00:00

In my jsp page i have one text box and two combo box. An

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In my jsp page i have one text box and two combo box. An alert is coming in my jsp page when i am writing something in the textbox. Alert is coming as “username already exists” and after alert that textbox is autorefreshed but two combo boxes are getting vanished why? i could not find out what may be the reason any help please? I included the following in head section. Full source for alert is here.

http://csscody.com/demo/wp-content/demo/popup/js/jquery.easing.1.3.js

http://csscody.com/demo/wp-content/demo/popup/js/alertbox.js

http://csscody.com/demo/wp-content/demo/popup/js/style.css

<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <title>JSP Page</title>
    <SCRIPT type="text/javascript" src="js/jquery.min.js"></SCRIPT>
<SCRIPT type="text/javascript" src="js/jquery.easing.1.3.js"></SCRIPT>
<SCRIPT type="text/javascript" src="js/alertbox.js"></SCRIPT>
<LINK rel="stylesheet" type="text/css" media="all" href="js/style.css">

    <script type="text/javascript">
          $(document).ready(function() {
           $("#textbox").keyup(function () {
    $.getJSON('check.jsp', {
        textboxname: this.value
    },function(data){
      if(data.isTrue){
          $("#textbox").val(''); //clear the text box
          csscody.alert("username already exists");// here alert is coming
                 }
      else{
      }
     });
});
});
    </script>
 </head>
<body>
        <input type="text" id="textbox" name="textboxname" style="position: absolute; width: 250px; left: 110px; top: 40px;" />
<br/><br/>

// The following two combo boxes are getting vanished after alert why
<select id="" name="" style="position: absolute; left: 600px; top: 40px; width: 250px;">
     <option value=""></option>
      <option value="somedata">somedata</option>
          </select>
<br/><br/> 
<select id="" >
    <option value="_"></option>
     <option value="somedata">somedata</option>
        </select>
 </body>
</html>

check.jsp

JSONObject jsonObj= new JSONObject(); 
jsonObj.put("isTrue","true");
response.setContentType("application/json");
response.getWriter().write(jsonObj.toString());
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1 Answer

  1. Editorial Team

    Its all ok with your code. When i started debug you code i saw some interesting thing in alertbox.js: (line 141 and 178)

      if (!$.support.maxHeight) { //IE6
              $('embed, object, select').css({ 'visibility' : 'hidden' });
  }

    This code detect ie6(if read a comment) but seems its buggy.

    Just comment these lines and your problem will be solved.

    And don’t forgot to post this bug!
    Good luck. And start use debugger 🙂

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