javascript - Show or Hide html content with java script -


i want show or hide html java script if (condition) want able hide html when users use example firefox , show content when use browser.

<!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>    <script type="text/javascript">  var nver = navigator.appversion;  var nagt = navigator.useragent;  var browsername  = navigator.appname;  var fullversion  = ''+parsefloat(navigator.appversion);   var majorversion = parseint(navigator.appversion,10);  var nameoffset,veroffset,ix;    // in opera, true version after "opera" or after "version"  if ((veroffset=nagt.indexof("opera"))!=-1) {   browsername = "opera";   fullversion = nagt.substring(veroffset+6);   if ((veroffset=nagt.indexof("version"))!=-1)      fullversion = nagt.substring(veroffset+8);  }  // in msie, true version after "msie" in useragent  else if ((veroffset=nagt.indexof("msie"))!=-1) {   browsername = "microsoft internet explorer";   fullversion = nagt.substring(veroffset+5);  }  // in chrome, true version after "chrome"   else if ((veroffset=nagt.indexof("chrome"))!=-1) {   browsername = "chrome";   fullversion = nagt.substring(veroffset+7);  }  // in safari, true version after "safari" or after "version"   else if ((veroffset=nagt.indexof("safari"))!=-1) {   browsername = "safari";   fullversion = nagt.substring(veroffset+7);   if ((veroffset=nagt.indexof("version"))!=-1)      fullversion = nagt.substring(veroffset+8);  }  // in firefox, true version after "firefox"   else if ((veroffset=nagt.indexof("firefox"))!=-1) {   browsername = "firefox";   fullversion = nagt.substring(veroffset+8);  }  // in other browsers, "name/version" @ end of useragent   else if ( (nameoffset=nagt.lastindexof(' ')+1) <             (veroffset=nagt.lastindexof('/')) )   {   browsername = nagt.substring(nameoffset,veroffset);   fullversion = nagt.substring(veroffset+1);   if (browsername.tolowercase()==browsername.touppercase()) {    browsername = navigator.appname;   }  }  // trim fullversion string @ semicolon/space if present  if ((ix=fullversion.indexof(";"))!=-1)     fullversion=fullversion.substring(0,ix);  if ((ix=fullversion.indexof(" "))!=-1)     fullversion=fullversion.substring(0,ix);    majorversion = parseint(''+fullversion,10);  if (isnan(majorversion)) {   fullversion  = ''+parsefloat(navigator.appversion);    majorversion = parseint(navigator.appversion,10);  }     if( browsername == "chrome")  	document.write("what should put @ line hide test div?");         else  	document.write("access denied!,what should put @ line hide test div?");     </script>  </head>  <body>  <div id = "test">      <p>test div</p>  </div>  </body>  </html>

i want show or hide content if condition.i use code prevent opening website in common browsers instead of vb browser designed website.

add class css:

.hidden { visibility:hidden; }

based on if statement:

a = document.getelementbyid('test') a.classname = a.classname + ' hidden'

of course none of code work javascript disabled.


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