I have HTML file. I tried the code on Safari and it was working fine. But when I tried this on Firefox, it’s not working.Can anyone suggest how to make it working on firefox?

On click on undo button I want to retrieve contents from the jsp file. Thats working when I used this code on safari on my mac.. but when I open the same file using firefox its not working. I am not sure is it due to browser settings or due to some other reason. I checked browser setting of firefox 3.6.12 installed on mac also it is enabled for javascript and java...

When I checked on HTTPfox it showed in Error loading content (NS_ERROR_DOCUMENT_NOT_CACHED) in the contents

Can anyone suggest whats going wrong???

I have HTML file. I tried the code on Safari and it was working fine. But when I tried this on Firefox, it’s not working.Can anyone suggest how to make it working on firefox?

On click on undo button I want to retrieve contents from the jsp file. Thats working when I used this code on safari on my mac.. but when I open the same file using firefox its not working. I am not sure is it due to browser settings or due to some other reason. I checked browser setting of firefox 3.6.12 installed on mac also it is enabled for javascript and java...

When I checked on HTTPfox it showed in Error loading content (NS_ERROR_DOCUMENT_NOT_CACHED) in the contents

Can anyone suggest whats going wrong???

• javascript
• firefox
• ubuntu
• safari

• Could you describe what’s not working? What do you expect to happen? What actually happens? – Paul D. Waite Commented Oct 27, 2010 at 22:44
• actually on click on undo button I want to retrieve contents from the jsp file. Thats working when I used this code on safari on my mac. but as soon as i tried this code on virtualbox where ubuntu is installed and the browser is firefox its not working. – Judy Commented Oct 27, 2010 at 22:48
• please don't format your code like that, it's unreadable – bevacqua Commented Oct 27, 2010 at 23:22
• After so many edits by the original question autor, each removing even more information about the initial context (not to mention the code itself), the answers don't make sense anymore. @Judy: please restore. – Alain BECKER Commented Jul 4, 2012 at 20:32

5 Answers 5

XMLHttpRequests only work when the request is on the same domain as the JavaScript making the request. So, your call to xmlHttp.open() would only work if that HTML file was hosted on csce.unl.edu.

Can the ubuntu box access the url http://csce.unl.edu:8080 ? It may be network/proxy/firewall settings on the virtual machine or in Firefox settings.

I'd try running firefox on the Mac and see where that takes me. If that doesn't work Then the problem is the browser, if it does, it's the way you are loading the site

Use JQuery. It has an AJAX library which does these browser patibility checks for you.

Also, Firebug may e in handy, to see whether the request is being sent and see what the response is.

I opened firebug > console and pasted

var xmlHttp, handleRequestStateChange; 
handleRequestStateChange = function() {if (xmlHttp.readyState==4 && xmlHttp.status==200) { var substring=xmlHttp.responseText; alert(substring); } }      

xmlHttp = new XMLHttpRequest();
xmlHttp.open("GET", "http://csce.unl.edu:8080/test/index.jsp?id=c6c684d9cc99476a7e7e853d77540ceb", true);
xmlHttp.onreadystatechange = handleRequestStateChange; xmlHttp.send(null);

And i saw everything working. What the error exactly? Can you open firebug and look at javascript errors.

Edit try this:

 var req = new XMLHttpRequest();  
 req.open('GET', '/');  
 req.onreadystatechange = function (aEvt) {  
   if (req.readyState == 4) {  
      if(req.status == 200)  
       alert(req.responseText);  
      else  
       alert("Error loading page\n");  
   }  
 };  
req.send(null);