Programming Forums > Web Development and Design > JavaScript and Client-Side Browser Scripting

Sane · Dec 5th, 2007, 6:45 PM

It's been a while since I've done any work with Ajax, but I believe, by default, Ajax is browser dependant, so you must include an external .js file that will work out the compatibility for you. Feel free to correct me of course...

I believe it was "Sarissa" that I used before.

FireflyX · Dec 6th, 2007, 1:12 PM

Quote:

You should mention the actual URL so we could look at it not working, or if it is a private page, post your current code. Also, the line number of the error would be a help.

I can't post a link since you have to actually be logged in to use the PMs feature. But here's how the code is at the moment:

(Toggle Plain Text)

<script type="text/javascript">

var xmlHttp;

function initialize(){ 

  try{
    xmlHttp=new XMLHttpRequest();    
  }catch (e){
    try{     
      xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");      
    }catch (e){      
      try{        
        xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");        
        }catch (e){
          alert("Your browser does not support AJAX!");        
          return false;        
        }      
      }    
    }  
  }

function options(cmd){

initialize();

xmlHttp.onreadystatechange=function()
  {
  if(xmlHttp.readyState == 4)
    {
    document.getElementById("show_box").innerHTML = xmlHttp.responseText;
    }
  }

xmlHttp.open("POST","http://www.staticfire.co.uk/ajaxrequest.php?cmd=" + cmd,true);
xmlHttp.send(null);

}
</script>

Quote:

It's been a while since I've done any work with Ajax, but I believe, by default, Ajax is browser dependant, so you must include an external .js file that will work out the compatibility for you. Feel free to correct me of course...

(Toggle Plain Text)

 try{
    xmlHttp=new XMLHttpRequest();    
  }catch (e)

But this code should create the built in javascript object that firefox uses. As for Netscape i'm unsure whether that uses the js object or the activex object but my code should create whichever is needed therefore making it compatible with all major browsers.

The Dark · Dec 6th, 2007, 4:56 PM

I can't see anything that would cause a "length required" message. One thing you could do is debug through it using a Firefox add-on such as FireBug. This will let you step through the script and set breakpoints etc.

Dec 5th, 2007, 6:45 PM	#11
Sane Programming Guru Join Date: Apr 2005 Posts: 1,730 Rep Power: 5	Re: Problem with calling a function It's been a while since I've done any work with Ajax, but I believe, by default, Ajax is browser dependant, so you must include an external .js file that will work out the compatibility for you. Feel free to correct me of course... I believe it was "Sarissa" that I used before.

Dec 6th, 2007, 4:56 PM	#13
The Dark Expert Programmer Join Date: Jun 2005 Posts: 799 Rep Power: 3	Re: Problem with calling a function I can't see anything that would cause a "length required" message. One thing you could do is debug through it using a Firefox add-on such as FireBug. This will let you step through the script and set breakpoints etc.

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Programming Forums > Web Development and Design > JavaScript and Client-Side Browser Scripting

Problem with calling a function