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ASP code inside the JavaScript

Hello,

I am trying to make a HEAD request to IIS Server using the Java Script and MSXML. I cannot get the value from the HTTP Header. The JavaScript I used is below.

But I can able to use ASP to get the variable "sm_user". (when user login to the application, the valid userID is stored into sm_user variable.) using the following I can able to get the sm_user value easily in the ASP

<%=Request.ServerVariables("sm_user")%>

Now my question is, Can I use this ASP code inside the JavaScript. Once I receive the value from the asp, I can pass it to my javaScript.

function getUserId(){
//-------------------------------------------------------------------------
//
// Querying the HTTP-Header (IIS Server) using MSXML 2.0
//
//-------------------------------------------------------------------------
//Creating the Object
var myUser
var xmlhttp
/*@cc_on @*/

/*@if (@_jscript_version >= 5)
try {
xmlhttp=new ActiveXObject("Msxml2.XMLHTTP")
} catch (e) {
try {
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP")
} catch (E) {
xmlhttp=false
}
}
@else
xmlhttp=false
@end @*/
if (!xmlhttp) {
try {
xmlhttp = new XMLHttpRequest();
} catch (e) {
xmlhttp=false
}
}

xmlhttp.open("HEAD", "/index.html",true);
xmlhttp.onreadystatechange=
function() {
if (xmlhttp.readyState==4) {
alert("The login userId is - "+
xmlhttp.getResponseHeader("sm_user"))
myUser = xmlhttp.getResponseHeader("sm_user")
}
}
xmlhttp.send(null);
return myUser;
}

I would appreciate your help. Its very important for me. if you answer ASAP.

kalagappan

ASKER CERTIFIED SOLUTION

fritz_the_blank

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fritz_the_blank

For those who want to follow what has been said so far:

https://www.experts-exchange.com/questions/20786536/Calling-ASP-inside-the-JavaScript.html

FtB

fritz_the_blank

Look, let's go through this step by step. If you would please trust me and do exactly what I ask, I will get you there.

What do you get when you do:

<%=Request.ServerVariables("sm_user")%>

I need to see what the value looks like.

FtB

fritz_the_blank

if you want the value that is returned from the function, do this:

<%
strUser = getUserId()
%>

Then for client side, you do this:

<SCRIPT LANGUAGE=javascript>

</SCRIPT>

FtB

fritz_the_blank

If you are trying to get the value for <%=Request.ServerVariables("sm_user")%>, then just do this:

<%
strUser=Request.ServerVariables("sm_user")
%>

<SCRIPT LANGUAGE=javascript>

</SCRIPT>

ASKER

Do not mistaken me Mr. fritz_the_blank for posted in the ASP Forum. All I am trying to fix it faster.

Well, I have to code this inside the javaScript. I am not allowed to write any ASP in this project.

I tried the code you provided inside the JavaScript. I have many javaScript function doing other things. To acheive other stuff, I need the userID. To get the userID, I thought I can use the xmlhttp. But it doesn't work. I am wondering if I can use the "ASP inside the javascript"

thank you,
alagappanK

fritz_the_blank

Are you allowed to run .asp pages? If not, then you can't use the asp value in the javascript. If you can use asp pages, then you can get the userID like this:

<%
strUser=Request.ServerVariables("sm_user")
%>

<SCRIPT LANGUAGE=javascript>

</SCRIPT>

FtB

ASKER

Hello,

Sorry for not responding you. I spoke to my team mates and they agree that, I can use ASP for this situation.

Can you help me this.

I can create a ASP page and use the code above. I need to get this "strUser" to the other JavaScript file. What I mean is I have a set of javaScript function in a file. I need this value in there. Would you please tell me how to do that.

I apologize for all the confusion.

Thank you,
alagappanK

fritz_the_blank

Sure. Is it possible to pass this value as a parameter to your JavaScript funciton?

FtB

ASKER

Yes, I can make changes in the JavaScript code to accept a value as parameter. Would you please tell me how to call the ASP Page from javascript. what I am asking is It would be great if you can give me the code (atlease some kind of skeleton)

thank you,
alagappanK

fritz_the_blank

Please tell me the name of your include file for the JavaScripts and I'll put together a page for you.

FtB

fritz_the_blank

Well until then, here is a sample for you:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>
<head>
<title></title>
<%
function getUserId(){
//-------------------------------------------------------------------------
//
// Querying the HTTP-Header (IIS Server) using MSXML 2.0
//
//-------------------------------------------------------------------------
//Creating the Object
var myUser
var xmlhttp
/*@cc_on @*/

/*@if (@_jscript_version >= 5)
try {
xmlhttp=new ActiveXObject("Msxml2.XMLHTTP")
} catch (e) {
try {
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP")
} catch (E) {
xmlhttp=false
}
}
@else
xmlhttp=false
@end @*/
if (!xmlhttp) {
try {
xmlhttp = new XMLHttpRequest();
} catch (e) {
xmlhttp=false
}
}

xmlhttp.open("HEAD", "/index.html",true);
xmlhttp.onreadystatechange=
function() {
if (xmlhttp.readyState==4) {
alert("The login userId is - "+
xmlhttp.getResponseHeader("sm_user"))
myUser = xmlhttp.getResponseHeader("sm_user")
}
}
xmlhttp.send(null);
return myUser;
}
%>

<script>

</script>
</head>

<body>

</body>
</html>

ASKER

I cannot rename my JavaScript file to ASP file. Would you please tell me is it possible to have the ASP file with the function getUserID() and I have a JavaScript file called whphost.js

Can I call the getUSerID() from whphost.js file.

One more thing is that, I tried this function in my javascript and it is not getting the inbound HTTP Header values from IIS Server.

I would appreciate your help,
thank you,
alagappanK

fritz_the_blank

Well, that should be possible, but try to keep clear in your mind what happens client side and what happens server side....

<HTML>
<HEAD>
<META NAME="GENERATOR" Content="Microsoft Visual Studio 6.0">
<TITLE></TITLE>

<SCRIPT LANGUAGE=javascript>

</SCRIPT>

</HEAD>
<BODY>

<P> </P>

</BODY>
</HTML>

ASKER

It may be dumb question. But, would you please tell me why can't we use this following function in JavaScript ??? Any Idea ??

function getUserId(){
//-------------------------------------------------------------------------
//
// Querying the HTTP-Header (IIS Server) using MSXML 2.0
//
//-------------------------------------------------------------------------
//Creating the Object
var myUser
var xmlhttp
/*@cc_on @*/

/*@if (@_jscript_version >= 5)
try {
xmlhttp=new ActiveXObject("Msxml2.XMLHTTP")
} catch (e) {
try {
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP")
} catch (E) {
xmlhttp=false
}
}
@else
xmlhttp=false
@end @*/
if (!xmlhttp) {
try {
xmlhttp = new XMLHttpRequest();
} catch (e) {
xmlhttp=false
}
}

xmlhttp.open("HEAD", "/index.html",true);
xmlhttp.onreadystatechange=
function() {
if (xmlhttp.readyState==4) {
alert("The login userId is - "+
xmlhttp.getResponseHeader("sm_user"))
myUser = xmlhttp.getResponseHeader("sm_user")
}
}
xmlhttp.send(null);
return myUser;
}

ASKER

If I can make this work with the javascript. It would be great !!

fritz_the_blank

That code has to run with server-side JavaScript, not client-side JavaScript (at least that is what I am guessing--I don't much work with server-side JScript).

FtB

what is the error that you get when you execute the above javascript (getUserID) function?.

Make sure that you have enabled your browser to allow scripts not marked as safe. (Go to Tools>Internet Options>Security>Custom Level>Initialize and Script Activex Controls Not Marked as Safe ... Click on Prompt.).

Also, I assume that you are aware of the fact that only IE would support the code that you have written above.

Cheers!!

fritz_the_blank

I am still confused about whether this code is supposed to be server-side or client side? From the orginal question, it looks like it was designed to grab a user id via server-side scripting. If that is not the case, and this is client side scripting, then that changes the whole question.

FtB

ASKER

Mr. fritz_the_blank.

Its my mistake. I suppose to tell you this. I am trying to use the above code from my client side javascript.

I do not want to use the serverside javascript. I apologize for the inconvenience. Please let me know, what needs to be done to make it work. If I use the the code like

<%@ language="javascript" %>
<script language="javascript" runat="server" >
Response.Write("This is a server-side messgae");
</script>

if I use this code in my client side script, do you think it work ??

thank you,
alagappanK

fritz_the_blank

If you do this on the client side:

<%@ language="javascript" %>
<script language="javascript" runat="server" >
Response.Write("This is a server-side messgae");
</script>

it will not work. On the other hand, if you change the code, it will:

<SCRIPT LANGUAGE=javascript>

</SCRIPT>

it will.

This thread has been going on for a while, and I don't think that I have been doing a very good job at helping you.

Let's try to clarify the problem so that I can do a better job.

1) What is it exactly that you are trying to accomplish?
2) Can you use server-side asp code? If so, what language do you program that in, JScript or VBScript?

FtB

ASKER

Hello,

I am trying to query the HTTP Header for UserID in IIS Server from clientside javascript. This IIS Server is secured by SiteMinder software. We are using RoboHelp for presentation. RoboHelp is installed in IIS Server. RoboHelp is a software which provide the framework for presentation of online help or online application. We are allowed to use as a "black-box" implementation. That is the reason I am trying to avoid ASP.

In the RoboHelp software, the use many javascript. I modifed one javascript to include the userID. If I use ASP, how do I accomplish, getting the UserID in ASP and then How do I get the userID value from the JavaScript.

Remember I can not include this javascript inside the ASP, because this javascript is refered in may programs in the RoboHelp.

To answer to your second question, I am trying to use JavaScript. If I can fix my problem using ASP, I can use JScript.

Can you please tell me something, if I use ASP and have function which return the UserID. and now, can I call this function from javaScript (this javascript is not inside the ASP)

I greatly appreciat your patience and help,

alagappanK

fritz_the_blank

Okay, let's go one step at a time.

I think that from what you say above that you will need to use at least some server-side script, otherwise, I think it unlikely that you will be able to get http header information about the UserID.

So, you will have to use at least some .asp to get the user id.

Do you have a piece of code that you currently use to get the id? If so, is it that getUserId() function?

FtB

ASKER

I can use the following code inside the ASP to get the userID.

<%
var userID;
userID = response.write(Request.ServerVariables("sm_user"))

%>

would you please help me here to give me the full ASP Code (function and that return this userID). I appreciate that.

Then the second step is, From my javaScript, I should be calling this function to bring the userID value to my javaScript. I am not sure how to do it.

thank you so much for your help,

alagappank

fritz_the_blank

Okay, so you know how to get the user id. That's great!

Now, do you want this value for server-side JavaScript code or for client-side javascript code? If the latter, try this:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>
<head>
<title>Untitled</title>
<%
var userID;
userID = response.write(Request.ServerVariables("sm_user"))
%>

<script>

</script>
</head>

<body onLoad=showUser('<%response.write(Request.ServerVariables("sm_user"))%>')

</body>
</html>

ASKER

Thank you very much fritz_the_blank.

I want the userID for my client side javascript.
Would you please give me a sample code of how clientside javascript can call the above function(showUser) in ASP.

Thank you,
alagappanK

fritz_the_blank

Take a look at the example above...

In general, you can do this:

<script>

</script>

now you can use the variable intUserID for all of your client-side scripts.

FtB

ASKER

Are you saying from my Javascript (whphost.js) I can use this code to get the UserID

<script>

</script>

Here is the thing,

I want to keep the ASP separate.
I wanted to call the function in the ASP page from my whphost.js
The reason is that, I have alot of javascript is in this whphost.js, and it is refered in may places.

If I confuse you, please let me know

alagappanK

fritz_the_blank

Keep in mind that the scope of any client-side javascript variable is only for the page. For each page that you want to use the server-side variable, you will have to do the following:

<script>

</script>

Once you do that, you can use the client-side variable in all of your client-side scripts.

Are all of the scripts in whphost.js client side scripts? If so, once you execute the code above, you can use the variable in your whphost.js scripts as well.

Don't forget, however, that client-side variables expire with the unLoad() event of your page, so, you will have to grab the value for each page where you want to do this.

FtB

ASKER

Hello Good Morning FtB,

I understand that, I have to use the one line of code for each page. But this javascript is not used for every page. If I get this userID, it will be set as global variable for this javascript (whphost.js), If I call this script again, I need to run the one line of code.

Yes All the scripts in whphost.js is client side scripts.

The following is not clear to me.
-------------------------------------
Can you please clarify me this. The following code will be inside the clientside javascript ?? I am just wondering since we have <%%> tag, does it work inside the javascript ??

If I have to use this code inside the ASP. Can you tell me how do I get this value out of ASP to my JavaScript(whphost.js).

<script>

</script>

Thank you,
alagappanK

fritz_the_blank

For each page where you intend to use scripts from whphost.js and you need the variable, you will need to run the following code:

<script>

</script>

That is because the variable scope will only last for the page. You cannot set it as a global variable that outlasts the page.

AS for using server-side tags with client-side script, you can do it if you keep clear in your mind what happens where and in what order. Please try this simple example so that you will understand. I know I keep repeating this, but if you can understand this, the rest will be clear. The idea is that you set the variable with server-side code. When the page renders, it will grab the server-side script. Here is what the page looks like on your server:

<HTML>
<HEAD>
<META NAME="GENERATOR" Content="Microsoft Visual Studio 6.0">
<TITLE></TITLE>
<%
var strName = "Fritz the Blank";
%>
<SCRIPT LANGUAGE=javascript>

</SCRIPT>

</HEAD>
<BODY onLoad=sayHello()>

<P> </P>

</BODY>
</HTML>

This is what the page will look like if you view the source once you run it:

<HTML>
<HEAD>
<META NAME="GENERATOR" Content="Microsoft Visual Studio 6.0">
<TITLE></TITLE>

<SCRIPT LANGUAGE=javascript>

</SCRIPT>

</HEAD>
<BODY onLoad=sayHello()>

<P> </P>

</BODY>
</HTML>

ASKER

okay. I wanted to tell you this. I am running these whphost.js and other javascript before I get into the initial web page(index.html). So, this javascript do all the initial task, it nothing related to web page.

If I include the code with <%%> tags in my javascript, it works ?? I guess the answer is yes. In that case I don't need any ASP page ???

Please let me know.
thank you,
alagappanK

fritz_the_blank

How can anything happen in whphost.js before a page is called? If it is client-side javascript, it needs to be called from some page, doesn't it?

In any case, you can try putting the snippet into your .js include file and see what happens.

FtB

fritz_the_blank

If you do that, however, the first time that you call an .htm page with that include file, it will crash because the snippet requires .asp.

FtB

ASKER

Good Morning FtB,

I understand what you saying. would you please be patience here. I know this thread is going way longer. Let me explain, little bit more..

Once this Application is called, This Presentation (RoboHelp) need to intialize its parameter such as where is the data file (xml) and html file. For different user, depending upon their access level, they access different directory.
So, I use this userID to get this directory structure (where the data and html file is located). This is the business logic.

All the above is happening, once the user request for the page. Once the RoboHelp find the path, it will render the HTML to the client browser. I am just trying to modify the RoboHelp JavaScript to include few code, to use the UserID to get the right directory path for the given USER.

I believe I told you about the security, SiteMinder, its installed on ther server. ONce user access this application, this siteMinder will provide the user login screen, user type there user Name and password, it goes to siteMinder and it validate the user and then forward the request to this RoboHelp, Here I need to get this userID and find the directory path for this userID.

I know its a long process. let me know if it make sense.

thank you,
alagappanK

fritz_the_blank

This is really difficult since I can't test code in your environment....

If you think about the principles that we learned through this and the other thread, can you figure out how to apply them to what you are trying to accomplish here?

I am guessing that the place to start testing is with the authentication routine. Since the user's level is set there, that is probably the first place that you will need to do this.

FtB

ASKER

Can you please tell me this following code in ASP is right or if you find any syntax error or any escape character error, please let me know.

I am trying to get the value of HTTP_HOST into this variable windowsUserName, I can use this variable in my JavaScript.

<%
response.write("windowsUserName = ''" + Request.ServerVariables ( 'HTTP_HOST' ) + "'';")
%>

I truly appreciate your help,
alagappanK

fritz_the_blank

<%
response.write("windowsUserName = '' + Request.ServerVariables ( 'HTTP_HOST' ) + '';")
%>

FtB

ASKER

Hello FtB,

I am including this ASP like below. The above ASP is called "getMyUserName.asp"

In the html I include this line
<html>
...

<script language="JavaScript1.2" src="getMyUserName.asp"></script>
<script language="javascript1.2" src="whphost.js"></script>

<script>
alert(" Here is the value " + windowsUserName);
</script>
...

</html>

when I run this, I am getting the Error: 'windowsUserName' is undefiened

I appreciate your help to fix it. I was guessing that this windowsUserName is already initialized in the ASP Page.

Thank you,
alagappanK

fritz_the_blank

Change this:

<script language="JavaScript1.2" src="getMyUserName.asp"></script>
<script language="javascript1.2" src="whphost.js"></script>

To:


<script language="javascript1.2" src="whphost.js"></script>

Also, what does getMyUserName.asp look like?

FtB

ASKER

getMyUserName.asp looks like below

<%
response.write("windowsUserName = " + Request.ServerVariables ('HTTP_HOST') + ";")
%>

Let me know,
thank you,
alagappan Kennedy

ASKER

In my html code I use the following as you mentioned to me earlier

<html>
...
...

<script language="javascript1.2" src="whphost.js"></script>
...
<script>
alert(" Here is the value " + windowsUserName);
</script>
...

</html>

getMyUserName.asp looks like below

<%
response.write("windowsUserName = " + Request.ServerVariables ('HTTP_HOST') + ";")
%>

when I run this, I am still getting this

Error: 'windowsUserName' is undefiened

thank you for helping me. please let me know,

alagappanK

fritz_the_blank

I think that I see the problem.

getMyUserName.asp should be:

<%
response.write("var windowsUserName = " + Request.ServerVariables ('HTTP_HOST') + ";")
%>

FtB

fritz_the_blank

Hang on, that should be:

<%
Response.write("<script language='javascript1.2'>")
response.write("var windowsUserName = " + Request.ServerVariables ('HTTP_HOST') + ";")
response.write("</script>")
%>

ASKER

I just modified the ASP Code. its still giving me the same Error: 'windowsUserName' is undefiened.

I am just don't know what other reason its not recognizing the variable.

It is not complaining about the ASP at all. Do you think its ignoring the ASP ?? that we included

thank you
alagappanK

fritz_the_blank

Whe you run the page, view the source, and paste the result here. That way we will be able to see what is happening.

FtB

ASKER

I have few frame in my presentation layer. This is the html which uses the code I am talking about.

<html>
<head>
<title> Navigation Pane </title>
<meta http-equiv="content-type" content="text/html; charset=iso-8859-1">
<meta name="generator" content="RoboHelp by eHelp Corporation www.ehelp.com">
<meta name "description" content="WebHelp 5.10">
</head>
<body border=0 topmargin=0 bottommargin=0 rightmargin=0 leftmargin=0 scroll=no>
<script language="javascript" src="whver.js"></script>
<script language="javascript1.2" src="whmozemu.js"></script>
<script language="javascript1.2" src="whmsg.js"></script>
<script language="javascript1.2" src="whproxy.js"></script>
<script language="javascript1.2" src="whutils.js"></script>

<script language="javascript1.2" src="whphost.js"></script>
<script language="javascript1.2">

</script>
</body>
</html>

fritz_the_blank

Okay--this isn't good! The problem is right in the second line:

<script language="javascript1.2" src="whutils.js"></script>

<script language="javascript1.2" src="whphost.js"></script>

That code should be processed. It looks like you are running this page as an .htm page rather than as an .asp page.

FtB

ASKER

Yes. this whole code is inside the htm file. I thought I can include ASP page inside the htm.

Are you saying it is not possible to use ASP Page inside the htm file.

If I have to change file name from .htm to .asp then I have to change the name where ever it refering this file.

Is there any other way ???
Thank you,
alagappanK

fritz_the_blank

I am afraid that there is no other way! You can neither execute asp code nor include an asp file unless your page is .asp.

We went over this a few times already, right?

FtB

ASKER

hmm.. The issue is that, I cannot change the htm file to asp. Because it is been tie with the other files. I am not sure this RoboHelp allow to use ASP Pages.

I just have to investicate to see if I can use asp instead of htm then !!!!

thank you,
alagappanK

fritz_the_blank

You will have to because the whole point where this question started was the need to pass server-side asp values to client-side code, and the only way that can work is by running asp.

FtB

ASKER

Hello FtB,

It works just fine with the following code. I just found a syntax mistake in the ASP code, that fix the whole thing.

<html>
...

<script language="JavaScript1.2" src="getMyUserName.asp"></script>
<script language="javascript1.2" src="whphost.js"></script>

<script>
alert(" Here is the value " + windowsUserName);
</script>
...

</html>

getMyUserName.asp should be:

<%
response.write("var windowsUserName = " + "'" + Request.ServerVariables("HTTP_HOST") + "'")
%>

I just miss the double quotation for HTTP_HOST. Instead I used single Quotation. So, we can include the ASP in the htm file and after the execution of the ASP we will get

var windowsUserName = xxx

I can use this "windowsUserName" variable in my javascript to continue my processing.

I truly appreciate your help in this forum. Thank you for your patience.

Kind Regards,
alagappanK

fritz_the_blank

So you are all set then? That is great!!!

I am glad to have helped.

Please close out this question then by accepting the comment that helped you the most as an answer. Also, please close out:

https://www.experts-exchange.com/questions/20786536/Calling-ASP-inside-the-JavaScript.html

Best of luck with your project,

FtB

ASKER

I solved this question by myself. If you see above, I found the solution.

Please share the points between me and fritz_the_blank.

alagappanK.

fritz_the_blank

I find this strange--I gave an awful lot of help here, and it seems somewhat ungrateful to request a deletion.

Fritz the Blank

fritz_the_blank

I see--I can't help but feel that I answered this question at least a dozen different ways and that any solution that s/he arrived at (perportedly on his/her own) depended upon the information in the thread.

I would have participated here regardless of whether the points were 250 or 500, but there is a lot of time and energy spent here, and I feel that the point reduction reflects a pronounced lack of gratitude for the time volunteered.

However, if after further consideration alagappanK still wants the points back, that's fine, but I would think twice before helping him/her out in the future.

Fritz the Blank

fritz_the_blank

I think that those reviewing the PAQ's would find 9674507 the most useful.

FtB

fritz_the_blank

Thanks Lunchy,

FtB