Perl Cgi And Javascript Syntax Please

Jul 30, 2009

I just need someone to tell me what the proper syntax is for calling a perl sub from another perl sub.. in trying to use onClick to call a sub in Htmlform() .. but its not working... the cgi works fine.. the mySql parts work fine.. more specificallyprint start_html(-title=>'Lab 6',-scrip=>{-language=>'PerlScript', src=>'mySqlProg.cgi'});i dont know if the above is the corect syntax in relation to thisprint "<button type='button' value='view' onclick='show_entries();'>Show Table Values</button>";

#!/usr/bin/perl
use strict; use warnings;
use CGI qw/:all/;

[code]....

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New Version Of JavaScript Minifier In Perl

May 29, 2007

I've uploaded a new version of the javascript::Minifier module that
was on CPAN. It was a translation of JSMin but I rewrote it so it now
handles missing semicolons, + ++ code, and leaves those freaky IE
conditional comments in the output. The goal was that if working code
is input then working code is output where working == working.
Breaking code that works is not such a good idea. Code:

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Substring Syntax In Javascript

Jul 23, 2005

Trying to debug someone else's javascript code. There is a line that

looks like this:

req = req.substring(req.length-2, req.length);

From what I can gather in their comments, they want to capture the last two characters of the string "req".

I'm guessing that the above line won't do that, and they want to change it to

req = req.substring(req.length-1, 2);

In other words, the parameters are starting position, and length. Is that correct?

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Javascript Class Syntax

Apr 3, 2006

I discovered this syntax on the google example of a client to their web
service.

function PagClass()
{
this.init();
}

PagClass.prototype = {

init : function() {
this.m_bInited = true;
this.m_nTotalRows = 0;
this.m_nFirstRowNum = 0;
this.m_nRowsPerPage = 0;
this.m_nNumPages = 0;
this.m_nReportid = 0;
this.m_nResultNumStart = 0;
this.m_strStart = "";
},

foo: function() {...},
bar: function() {...}
}

This seems like a very elegant way to create classes in javascript,
gives you a constructor and lists methods as comma separated
properties.

My colleague is suspicious that there may be excessive runtime overhead
associated with the prototype, property list way of doing this.
Anybody know for sure?

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Online Javascript Syntax Checker

Jul 2, 2002

I have a whole heap of Javascript that I want to compress (by removing line breaks etc). When laid out with line breaks, all works fine. When compressed ... BANG!

I suspect that there is a semi-colon missing somewhere which is only breaking when the return is removed. However, I'd like to run the whole block of javascript through an online validator instead of straining my eyes trying to locate the piece of the script at fault.

Is there such a thing? When I search for 'Javascript validator', I get a whole heap of links to using javascript to validate forms and such like!

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Perl Program Problem

Jul 31, 2001

I have a problem with my perl program - it is not able to display the output of vowel count and word repetition count from a text file.
The whole Perl program is supposed to read a paragraph of text and calculate followings based on the text:

1. number of empty spaces.
2. number of words in the text.
3. number of vowels in the text (a,e,i,o,u)
4. number of words with repetition in the text

Example output:-
No. of empty spaces: XX
No. of words : XX
No. of vowels -
a:: XX
e: XX
I: XX
o: XX
u: XX
Words with repetition-
Word 1 : XX
Word 2 : XX
..... ....
..... ....


Here below is the program so far:

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Calling Perl From Js, Part Deux

Jul 23, 2005

I am using the following method to call a Perl script from js:

<script type="text/javascript" src="http://myserver.com/cgi-bin/x.pl?x=abc"
</script>

The Perl writes an application/x-javascript header followed by some js
code (like document.write).

I can't use the hidden frame method suggested by Erwin Moller because the client page is an eBay ad, and they will not allow any frame code.

Now I want to pass to my Perl script an argument value which cannot be
known until the page is loading (specifically, the page title, which is
created by eBay and contains a unique id). I know how to get the page
title with js, but there's no way (that I can figure out) to dynamically
create the src argument of the <script> tag.

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Return Value To Perl Variable In Cgi File?

Jul 28, 2009

I want to check whether the flash is installed or not on client so i have a javascript function which does this , now i want the resultant variable from this function to return to perl variable in cgi file. i dont want to use form submit because i dont need it. i simply have to take decision for further coding depending on this variable returned from javascript. :cry:the way i m doing is,cgi file,

#!/usr/bin/perl
require './draw_pie.pl';
%lv=("lv1"=>'20',"lv2"=>'10',"lv3"=>'30',"lv4"=>'25',"lv5"=>'10',"lv5"=>'5');

[code]....

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AJAX :: Passing A Variable From Perl?

Mar 12, 2011

I have a webpage (Perl) that allows a user to select one of two buttons that represent :

<button id = "1" onclick="loadXMLDoc('mysqlinsert.pl')">Choose $name1</button>
<button id = "2" onclick="loadXMLDoc('mysqlinsert.pl')">Choose $name2</button>

Based on the button they choose, I need to pass a variable (declared in Perl) to another Perl page that is responsible for updating/inserting in a MySql Database.

As you can probably tell, I'm new to this. But I'm not sure how the variable ($name1) can be used in Perl to the loadXMLDoc, and then get passed using the 'POST' technique to mysqlinsert.pl??

function loadXMLDoc(url)
{
if (window.XMLHttpRequest)
{// code for IE7+, Firefox, Chrome, Opera, Safari

[Code].....

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Embed Perl Code Within A Web Page?

Mar 14, 2011

How can I embed Perl code within a web page? I want something like:

Code:
<script language="perl">
perl commands here
</script>

I know how to run Perl CGI routines from an HTML link. That is not what I want.

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Read JS Data Only File With PERL?

Mar 22, 2011

I have posted a question I believe that relates more to the PERL language, but it has to do with reading an external data only javascript extension file. [URL]

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JQuery :: Syntax Error,uncaught Exception: Syntax Error, Unrecognized Expression: [@href^="mailto:"]

Jun 6, 2010

i'm a newbie on jquery i'm studying it with the latest version, and following a book called "Learning Jquery" but iencountered a error, and i don't know what the problem is:

i copied the code from the book like this:$('a[@href^="mailto:"]').addClass('mailto'); to try to change the links which start with "mailto" to the new class "mailto" but there's a error reported: uncaught exception: Syntax error, unrecognized expression: [@href^="mailto:"]

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Custom Refresh Rate To Perl Script

Jun 15, 2009

I am asked to use JavaScript as part of an intro course on Perl in one of the projects.There are two html frames. The lower frame contains two user forms, one for a set of fields (name, email, comments etc), and the other that I am trying to add so that I can set a refresh rate for the upper frame.When I submit the frame rate as a number, say 5, the upper frame reloads but does not refresh at the rate I indicate.

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Make Perl Code From Forum Post?

Apr 16, 2009

here is my perl code from forum post[URL]

#start for todays date
my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday, $isdst) = localtime (time);
my $day = ("Sunday", "Monday", "Tuesday", "Wednesday", "Thursday",

[code]....

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Document WriteIn - Reading Perl Cookies

Apr 4, 2009

To read a cookie:
Code:
<script language=javascript>
<!--
var cook=document.cookie.split(";");
var pieces=cook[0].split("=");
document.writeln("Your javascript cookie is called: " + pieces[0] + "<br>");
document.writeln("Its value is: " + pieces[1]);

//-->
</script>

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Ajax :: Making A Call To A Perl Script

Feb 2, 2011

I am making a call to a perl script using AJAX, this is basically updating a shopping cart item quantity, however; it only works about half the time.. Code:

function UpdateItem(Qty, ProdID, Size){
var XMLHttp;
var ee;
if(navigator.appName == "Microsoft Internet Explorer") {
XMLHttp = new ActiveXObject("Microsoft.XMLHTTP");
} else {
XMLHttp = new XMLHttpRequest();
}
[Code]...

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JQuery :: Internal Server Error 500 Thrown From Perl Script

Feb 25, 2011

I have a perl script which is called via Ajax. It simply writes 3 values to a database. The code works fine (values get written successfully) but I get an "Internal Server Error" thrown. The Errorlog says "premature end of script headers". There was no problem with the application - it works as required and has for a few months - but I noticed the error via Firebug when testing something else.So I started stripping perl out of the script in an attempt to locate the problem .. and continued till I only had only had two lines left .. the shebang and exit .. I still get the 500 error. Running the script direct from a browser gives the 500 error in the browser window ... from the command prompt it's fine - ie. nothing in the apache errorlog.

There is nothing wrong with the server configuration - it has hundreds of perl scripts and has been running for years.

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JQuery :: Parse The XML File A Perl Script Sends Back

Jun 10, 2010

Looking to parse the XML file a perl script sends back.I wantto get values from specific tags in the XML file. Here is my code:

[Code]...

The code seems to be getting hung up on the dataType: "xml", line because when I comment it out, it goes to the next step and executes the function (although it doesn't do anything). how I can change this or just take a different approach? Let me know if I can provide more information.

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Diving Into Regexp By Porting A Perl Script Over To Js That Uses Regexp To Compress Into A Bookmarklet Capable Format?

Aug 10, 2010

I'm finally diving into regexp by porting a perl script over to js that uses regexp to compress javascript into a bookmarklet capable format.I've successfully worked out 90% of the expressions but am troubled with a few, this one at the moment is odd:I want to remove the first line if it hasjavascript:So I thought str.replace(/^javascripts+:s+/, "") would be ok. I want javascript text, any space, colon, any space and new line. what I'm doing wrong.btw this is the original perl version

$src =~ s{^// ?javascript.+:.+
}{};

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Syntax

Jul 20, 2005

I am trying to order a laptop from the Dell online shop but
everytime I try to press 'continue' after picking the options, I get
an error message in the lower left hand corner of the browser.
I'm using WIN 98SE with java enabled on my laptop.

The error log says:
Line: 1
Char: 1
error: object expected
code: 0

And this is the line which pops up when I place the cursor on the
'continue' button causing the above error:

javascript:next_page(&#391;','c=us&cs=19&kc=6V602&l=en&oc=5100FS&s=dhs');

I would assume there's a bug in that line. Although there's little I
can do about it other than forward it to the Dell folks - my pgming
background has me curious as to what's causing this!

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Is This Syntax Correct?

Jul 23, 2005

onClick="javascript:myFunction()"

or does it HAVE to be

onClick:"myFunction()"

I know 'javascript' is not necessary here, but just want to know whether to include it (which sometimes I do by mistake) is incorrect syntax or not..

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Syntax Error

Aug 12, 2005

I have this JavaScript that is supposed to show random products from my
database, and show something different every time you refresh or revisit.
But I keep getting an error - on my computer - that says Syntax Error in
Line 2.

There is no error on most other computers, and the products show, but
another script on the page, an article title scroller, stops - on most
computers, but not all. It says "no articles available".

I've tried the script on an asp page and a htm page, all by itself, but it
still doesn't work. I tried changing all kinds of settings in my browsers,
but nothing helps. I'm on XP, SP2, which I've heard has some problems
handling javascripts. I don't know if that's true, but if it is, I know that
lots of other people will have the same problem as me when they view the
page. Actually, I think it is a good thing, that my computer is pointing out
this error. I get the error message in IE6, but in NS8 and FF, I just don't
see the products. No error message.

Anyway, here are the first three lines of the script:

<%
if TRIM(request.servervariables("http_referer")) = "" then
%>

Using spellcheck, I found that referer is spelled wrong, it should be
referrer. I don't know if that is right for javascript (or asp?), but
correcting it didn't make a difference.

The script is JavaScript on an asp page, and it is called in an htm page.

Is the error obvious from the 3 lines?

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Alert Syntax

Sep 12, 2005

How does one center text in an alert box? and how do you make the alert box
appear in the middle of the screen? I've seen it done, but my alerts have
text left justified, and the box is longer than i need.

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Syntax -0 At End Of Replace()

Nov 13, 2006

I found this in one of my old scripts but I can't remember what the -0 was used for. I remember it was a shortcut method but I can't remember for what. Does this ring a bell with anyone?

var Pattern = /px/;
var T = paddingArry[0].replace(Pattern, "")-0;

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ECMAScript Syntax

Jul 20, 2005

Does the "semicolon insertion" really affect you if you format code as

function x (y)
{
// ...
}

instead of:

function x (y) {
// ...
}

The jslint page complains about lines ending in ) due to the nebulous
idea of "semicolon insertion". I have not reviewed the ECMAScript pdf
in great detail to try to pin this pretty-printing issue down. In
general, I find that code formatted in the "K&R" style (opening brace
on same line as if, while, function) confusing and difficult to read
compared with placing curly braces on separate lines.

On another subject, the difference between inner functions defined
explicitly versus defined using function expressions seems like a good
one for a FAQ. Under what circumstances does it make a real
difference whether you use function expression versus function
statement versus Function object?

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Using Var Syntax Problem

Jul 20, 2005

Here is the code:

function fnSelectOption(fieldname)
{
document.mainform. + fieldname + .value = "value";
}

It obvliously bombs where I am trying to ref the param "fieldname". I
realize it is a simple syntax issue but I cannot seem to figure it out.

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