using xmlHTTP.responseText in any other java function

Question

servis 0 Junior Poster in Training

14 Years Ago

is it possible to use the xmlHTTP.responseText in any other java function, after execuation of stateChanged() function??? example in ajax...

function stateChanged(){
if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete") {
       var result = xmlHttp.responseText 		
        if (result.length=="0"){
        var task = "do";  //i want to use "task" in other js function
         return task; 
      }		
   }
}

i used many ways (a little bit i know) to do but could not get the success. how can we do???

any thoughts please......

javascript

2 Contributors
11 Replies
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Latest Post 14 Years Ago Latest Post by essential

All 11 Replies

essential 84 Posting Shark

14 Years Ago

Here's a simple demo -- on how to access variable(s) from another function:

<?xml version="1.0" encoding="utf-8" standalone="no"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
   "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html id="xhtml10S" xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head profile="http://www.w3.org/2005/10/profile">
<!--[if IE]>
<meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7" />
<![endif]-->
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta http-equiv="Content-Script-Type" content="text/javascript" />
<title>Free Live Help!</title>
<script id="script15" type="text/javascript">
// <![CDATA[

var stateChanged = function() {
// Some statement 


   task = "do"; // Just don't use the "var" keyword when you declare the task variable, and you will be able to access this variable in other functions available in your program.
}();

var b = function() {
   return alert( "This call is from the b() function (" + task + ") is value of \"task\" variable inside the stateChanged() function." ); };

var c = function() {
   b();
   return alert( "This call is from the c() function (" + task + ") is the value of the \"task\" varible inside the stateChanged function." ); };

window.onload = c;

// ]]>
</script>
</head>
<body>

</body>
</html>

essential 84 Posting Shark

14 Years Ago

Before you can access any of this variable, the function holding it must be initiated first.

And only the functions that comes next to the stateChange function can gain access to the task variable and those from above will ignore this call.
e.g.

var a = function() {
alert( task ); // Will output as undefined variable.

/* if you will access the task variable, within this function, the call will be ignored-- since this function comes first before the stateChange function. */ };

var stateChanged() {
task = "do";

// This function must be initiated first, to make the task variable availble, to the other function(s) accessing it.
}();

var b = function() {
return alert( task );

// The task variable is accessible inside this function, and so does with the other functions comes next to this.
};

essential 84 Posting Shark

14 Years Ago

Ok, i'll provide you with another brief example later.

Are you accessing this variable inside your request handler?

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servis 0 Junior Poster in Training · Answer 1 · 2009-06-09T14:23:07+00:00

servis 0 Junior Poster in Training

14 Years Ago

no luck sir....

servis 0 Junior Poster in Training · Answer 2 · 2009-06-09T17:02:58+00:00

sorry essential, i used every method including all the instructions given by you, but no success....

essential 84 Posting Shark Featured Poster · Answer 3 · 2009-06-10T07:41:28+00:00

Here's the code, and you'll need to provide your own test.txt file in replace of the ajax's url.

<?xml version="1.0" encoding="utf-8" standalone="no"?>
<?xml-stylesheet type="text/css" href="#ccs21" media="all"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
   "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html id="xhtml10S" xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head profile="http://www.w3.org/2005/10/profile">
<!--[if IE]>
<meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7" />
<![endif]-->
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta http-equiv="Content-Style-Type" content="text/css" />
<meta http-equiv="Content-Script-Type" content="text/javascript" />
<title>Free Live Help!</title>
<style id="css21" type="text/css" media="all">
/* <![CDATA[ */

samp:before, samp:after { content : '"'; }
samp, var { font : bold 9pt monospace; }
var:before { content : "var "; color : #800080; }
var { color : #00F; }
samp { color : #F00; }
/* ]]> */
</style>
<script id="script15" type="text/javascript">
// <![CDATA[

var req;
var handleRequest = function() { 
   if ( req ) {
   if ( req.readyState === 1 ) {
      // if ( req.status === 200 ) {
         task = "active"; // This value will be available if the user send active request.
      // }
      } 
   } else { task = "Inactive"; }
};

var sendRequest = function() {
   req = null;
   method = "GET";
   try {
      if ( window.XMLHttpRequest ) {
      req = new XMLHttpRequest();
   } else if ( window.ActiveXObject ) {
         try {
         req = new ActiveXObject("Microsoft.XMLHTTP");
         } catch( e1 ) {
         req = new ActiveXObject("Msxml2.XMLHTTP");
         }
      }
   } catch( e2 ) {
   (( window.createRequest ) ? req = window.createRequest() : req = null );
   }
   (( req.overrideMimeType ) ? req.overrideMimeType("text/xml") : req );
   if ( req !== null ) {             req.onreadystatechange = handleRequest;
   req.open( method, "[b]test.txt[/b]", true );
   (( req.setRequestHeader && method === "POST" ) ?  req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded") : req ); 
   req.send( null );
   } else {
      alert("\nYour browser does not support AJAX Request!"); 
   }
};
var checkVar = function() {
   alert( task );
}
// ]]>
</script>
</head>
<body>
<div id="main">
<p>
This call don't use live request: <button id="btn" name="btn" onclick="handleRequest();checkVar();">Check <var>task</var></button><br /><br />
<var>task</var> will output as: <samp>Inactive</samp>.</p>
<hr />
<p>
This call uses live request: <button id="btn" name="btn" onclick="sendRequest();checkVar();">Check <var>task</var></button><br /><br />
<var>task</var> will output as: <samp>active</samp>.<br /><br />
Once the request has been initiated, <var>task</var> variable will preserved its value, into <samp>active</samp>
</p>
</div> 
</body>
</html>

servis 0 Junior Poster in Training · Answer 4 · 2009-06-11T12:26:45+00:00

its runnung very much fine....your solutions are always give me something different....thinking of doing things differently....

when i test the following....it does not respond...please can you help where i am comitting mistake...

<?php
session_start();
if ( !empty( $_GET['id'] )) 
{ 
   include("securimage.php");
   $img = new Securimage();
   $valid = $img->check( $_GET['id'] );
   if ($valid == true){
   $response = "Code is Correct"; 
   }
echo $response;
} else {
?>

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
   "http://www.w3.org/TR/html4/loose.dtd">
<html id="html4" lang="en">
<head>
<meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta http-equiv="Content-Script-Type" content="text/javascript">
<title>Live Help!</title>

<script type="text/javascript">
var req;
var handleRequest = function() { 
   if (req) {
   if (req.readyState == 4 || req.status == "complete") {
		respond = req.responseText;
        if ( respond.length === "0" ) {
        task = "incorrect"; // This value will be available if the user send active request.
        }
      } 
   } else { task = "correct"; }
};

var sendRequest = function(str) {
   if(str==""){alert("please enter the code"); return;}
   req = null;
   url = "test3.php?id=" + str;
   method = "GET";
   try {
      if ( window.XMLHttpRequest ) {
      req = new XMLHttpRequest();
   } else if ( window.ActiveXObject ) {
         try {
         req = new ActiveXObject("Microsoft.XMLHTTP");
         } catch( e1 ) {
         req = new ActiveXObject("Msxml2.XMLHTTP");
         }
      }
   } catch( e2 ) {
   (( window.createRequest ) ? req = window.createRequest() : req = null );
   }
   (( req.overrideMimeType ) ? req.overrideMimeType("text/xml") : req );
   if ( req !== null ) { 
   req.onreadystatechange = handleRequest;
   req.open( method, url, true );
   (( req.setRequestHeader && method === "POST" ) ?  req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded") : req ); 
   req.send( null );
   } else {
   alert("\nYour browser does not support AJAX Request!"); 
   }
};

var checkVar = function() {
	if (task == "correct"){
   		alert("the script runs fine"); } else { alert("incorrect"); } 
}
// -->
</script>
</head>
<body>
   <form method="POST">
   <!-- pass a session id to the query string of the script to prevent ie caching -->
   <img src="securimage_show.php?sid=<?php /*><!--?*/ echo md5(uniqid(time())); /*--><?*/ ?>">
<br>
   <input type="text" name="code" onblur="sendRequest(this.value); checkVar();"/><br />
   <input type="submit" value="Submit Form" />
   </form>
  <div id ="response">Response will be display here!</div>
</body>
</html>
<?php 
} 
?>

thank you for the solutions....

essential 84 Posting Shark Featured Poster · Answer 5 · 2009-06-11T12:59:11+00:00

Try raplacing the response status value into 200, instead of "complete" req.status === 200 . Let me know, if its still fails to work.

essential 84 Posting Shark Featured Poster · Answer 6 · 2009-06-11T13:34:10+00:00

And also within your if block:

//if ( respond.length === "0" ) { // Replace this line with:

if ( respond.length === 0 ) { // This should work --> your next statement...

servis 0 Junior Poster in Training · Answer 7 · 2009-06-11T15:49:52+00:00

thank you very much.............its working now, after your advised ammendments.......

essential 84 Posting Shark Featured Poster · Answer 8 · 2009-06-11T16:15:39+00:00

essential 84 Posting Shark

14 Years Ago

And you are always welcome, servis...

using xmlHTTP.responseText in any other java function

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