Javascript Obfuscator/compressor.
Jul 23, 2005
I'm playing with downloading javascript to my phone, over the providers
email service.
It's rather slow.
Is there anything that will compress javascript, doing things like
reducing identifiers to short unique strings, killing spaces and
redundant braces, removing comments, ...
Things that work around repeated use of long built-in functions would
be nice too.
The eventual aim is to run scripts on the phone (NEC e313) to allow
(with the aid of an web-email proxy) somewhat limited browsing,
to get past the networks firewall.
They have signed up various content providers (none of which I have
any interest whatsoever in) to provide exclusive content, so won't
allow general web access, which is a bit annoying.
Bandwidth can go below 1K/s or so, so every little bit extra is nice.
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May 2, 2006
Are JavaScript Obfuscator programs good solutions against code-copying? Is it true that its fast?
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Apr 16, 2007
I would like to find a good JavaScript compactor/obfuscator.
Obfuscation is not important to me really, but I would like a
compactor that understands variables and functions in a way that it
can shorten the names. I would also like for the compactor to be able
to shorton the property/method names of custom objects if such a thing
exists.
I have seen several compactors around, but most of them have varying
levels of compression that don't seem to be very customisable. Again,
obfuscation is not a must, although any good compactor should
obfuscate the code within reason anyway. If anyone uses GMail, and has
seen the code, that serves as a good guide to what I'd like to see
happen with my code.
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Sep 2, 2009
recommend me a good email obfuscator/defuscator plugin?
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Jul 23, 2005
I'm working on some code and am running into brick walls. I'm trying
to write out Javascript with Javascript and I've read the clj Meta FAQ
and didn't see the answer, read many similar posts (with no luck
though), and searched through the IRT.ORG Faqs
(www.irt.org/script/script.htm).
The Javascript is designed to open an popup window and then inside that
window call another script which will resize that window. There may be
another way around this but the reason I tried this approach initially
was that I wanted to call the onload handler in the popup window to
resize the image only after the image had completely loaded. I've had
some code in the primary Javascript file (showimage.js) before that
works if the image has been cached but on the first load, it doesn't
resize properly which tells me it is probably because it is trying to
resize the window based on the image size but it isn't completely known
at that point. So I removed that code and tried placing the resizing
code in the second Javascript file (resizewindow.js). BTW I've tried
other code to open a popup image and automatically size it ie Q1443 at
irt.org but that doesn't do exactly what we need.
Even if there is another way to do this with one file, I still want to
figure out why this isn't working in case I run into it in the future.
I thought what I would need to do to use document.writeln to write
Javascript would be to escape any special characters and to break
apart the script tag ie
document.writeln('</SCRIPT>');
would become
document.writeln('</SCR' + 'IPT>');
I have a HTML page and 2 Javascript files. All files are in the same
directory and have permissions set correctly.
Here are the 3 files (keep in mind wordwrap has jacked up the
formatting):
index.html
----------
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>Test</title>
<SCRIPT type="text/javascript" LANGUAGE="JavaScript1.1"
SRC="showimage.js">
</SCRIPT>
</head>
<body>
Click the house<BR>
<A ONCLICK="newWindow1('house1.jpg','Nice House')"><IMG
SRC="house1thumb.jpg"></A>
</body>
</html>
showimage.js
------------
function newWindow1(pic,sitename)
{
picWindow=window.open('','','width=25,height=25,sc rollbars=1,resizable=1');
picWindow.document.writeln('<html> <head>');
picWindow.document.writeln('<SCR' + 'IPT type="text/javascript"
LANGUAGE="JavaScript1.1" SRC="resizewindow.js"></SCR' + 'IPT>');
picWindow.document.writeln('</head>');
picWindow.document.writeln('<body onload="resizewindow();">');
picWindow.document.writeln('<img src=' + pic + '>');
picWindow.document.writeln('</body> </html>');
picWindow.document.close();
}
resizewindow.js
---------------
function resizewindow()
{
// Do resizing here.
// Right now this isn't being executed
alert("resizing window");
}
Can anyone provide some pointers as to why this javascript is failing?
I'm using IE6 on Win2k and when I click on the image to open the popup
window, it does open the window but it is white with no content and the
system immediately goes from about 4% CPU usage to 100% and
consistently stays there until I kill that window with the task
manager.
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Jul 23, 2005
Attached is a simple HTML file that adds and delete rows. In the add
row function I set an attribute "onClick" this triggers the
testMessage() function. When I try this in Firefox it works just fine
however on IE it just refuses to work.
What is interseting is the ROW that already exists has a similar
'onClick' event which works when the page is loaded, but subsequent
"row" additions to the table to not work in IE. Code:
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Feb 19, 2007
two possibilities or the attribute type of script:
text/javascript (the one i usually use) application/x-javascript
what are the differencies between both?
depends on the html content?
for example html 4.0.1 versus xhtml 1.1?
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May 25, 2005
I'm getting errors in Firefox everytime I try to run this frame resize code, but it works fine in IE. I can't seem to figure out what the problem is with it.
The error is: Error: theFrame has no properties
Line: 8
The line that the javascript console is showing an error for is in italics.
code from page:
<html>
<head>
<script type="text/javascript">
var defaultCols="100px,*";
var hiddenCols="0px,*";
function ShowHideMenu(){
theFrame = document.getElementById("framed");
if(theFrame.cols == defaultCols) theFrame.cols=hiddenCols;
else theFrame.cols=defaultCols;
}
</script>
<frameset cols="100px,*" name="framed">
<frame src="lframe.htm" name="frameMenu">
<frame src="mframe.htm" name="content">
</frameset>
</head>
<body>
</body></html>
Come someone let me know what I'm doing wrong here?
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Mar 30, 2006
I'm already past the basics of Javascript, and i need something that takes me to the other level and teaches me the new technologies and cool stuff (drag&drop, AJAX, OOP in javascript, maybe XUL...etc). So far i found these two books:
1. Sitepoint's "The JavaScript Anthology: 101 Essential Tips, Tricks & Hacks".
2. Worx's "Professional JavaScript for Web Developers (Wrox Professional Guides)"
Both seems to cover very insteresting topics, but i can only buy one of them. So which one do you suggest?
and by the way, i've read the sample chapter 5 of Sitepoint's book, and it seems like the author(s) just put the solutions/codes there and let you figure them out on your own. Is this how the rest of the chapters are?
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Jul 23, 2005
This is a question about defensive web browsing. Ocassionally I run into a page whose JavaScript does something that I find obnoxious. I would like to turn off JavaScript only for that page (instead of disabling it globally). It would be cool if there were some way to do this through a "bookmarkable" JavaScript snippet using the javascript: pseudoprotocol. Does anyone know any trick to do any of this?
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May 26, 2006
I am looking for a method to extract the links embedded within the
Javascript in a web page: an ActiveX component, or example code in
C++/Pascal/etc. I am looking for a general solution, not one tailored
to a particular page/script.
Hopefully, the problem can be solved without recreating a complete
Javascript interpreter. Any ideas?
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Oct 21, 2005
I have some javascript that I have written into the <body> section and it works great. But I would like to make it into a javascript function and define the function in the <head> section. Then in the <body> section write a small bit of javascript that would call the function() object. Code:
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Jan 7, 2006
I would like to know how to write javascript such that, a part of it isnt considered as script, & rather as HTML. Code:
Ok, the layer div can be written using document.write. But, Google ad itself is a javascript isnt it. How can it be written into this? How does this work?
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Apr 28, 2006
Ok so, this is my purpose:
- to be able to load asynchronously (via AJAX) some javascript ads (like google's or adbrite) so as to make them be loaded in the background, then update the page after the ads have loaded via innerHTML
Why?
-Because 90% of the time in my newer sites, javascript ads are the major offender in terms of speed of page rendering
My problem:
Via ajax, I can call a php file that retrieves some javascript and outputs it, XMLhttprequest returns those javascript lines, but they don't render in the page, since they miss the whole page loading, and are apparently not parsed
For example, let's say I call a php file via ajax, and it returns the output into a variable named "text" containing "document.write('hello')"
if I use xxx.innerHTML=text, nothing happens
My 1st solution:
Passing those javascript lines to eval() [like eval(text) ], but this produces a second problem, that I couldn't solve (probably because of my lack of knowledge in javascipt):
if I eval the code, it deletes my current page and renders a new one
for example, if I parse a document.write, my page disappears, and a new one is rendered with the document.write text
What I want is basically to make that "document.write" appear inside a div in my page, adding to the content (and not overwriting the whole page), much like what happens when using innerHTML
Is this even possible? How would you go about it?
I tried xxx.innerHTML=eval(outputfromphpfile) but it overwrites my whole page...
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Nov 26, 2000
Just a quickie: is it possible to place javascript within javascript? The following is the code I am using to create a pop-up for a picture gallery. I would like to place a banner from a banner exchange in bold under each photo. When I use the code below I get an error message:
<SCRIPT language=JavaScript>
<!--
function openpic(pic_name) {
myWin= open("", "displayWindow", "width=640,height=510,status=no,toolbar=no,
menubar=no,scrollbars=yes,resizable=yes,alwaysraised=yes");
myWin.document.open();
myWin.document.write("<html><head><title>" + pic_name + "</title>");
myWin.document.write("</head><BODY><center><TABLE CELLPADDING=Ɔ' CELLSPACING=Ɔ' WIDTH=òr'>");
myWin.document.write("<br><img src=kate/image"+ pic_name + ".jpg><br>");
myWin.document.write("<br><br><BR><br><BR><br><BR>");
myWin.document.write("<script language='javascript' type='text/javascript' src='http://www.linkbuddies.com/ad.go?id=134039+2&n=3'></script>");
myWin.document.write("</center></body></html>");
myWin.document.close();
}
//-->
</SCRIPT>
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Dec 12, 2005
Basically, on one of my sites I'm running adsense and today I added Chitika. The problem is, I can't run those type of ads through my banner advertising program.
The banner advertising program calls the banners/HTML from code like this:
<script language=JavaScript src=http://www.mysite.com/advertise/abm.asp?z=1></script>
And using that program I'm able to either choose a banner or HTML I want to display when that code above is used. It displays HTML ok... but when I try to run an ad of either adsense or chitika nothing displays on the page. The code that would be called is:
<script type="text/javascript"><!--
*Chicika code in here*
//--></script>
<script src="http://xxx/xxx/mm.js" type="text/javascript">
</script>
So... it looks like I can't have javascript call another javascript to display on a page. My question is then... how can I edit the above to make it work or how can I work around this problem? I'd really want this to work with Chitika and not so much with adsense... but it appears both Chitika and Adsense use similar javascript code.
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Jul 26, 2006
is it possible to use functions from javascript file A.js in javascript file B.js?
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Jul 23, 2005
How can I pull this ASP var into javascript?
What is wrong with this statement?
<%
todaysdate = (now)
response.write (todaysdate)
%>
<script language="JavaScript"><!--
var date = new Date();
var aspdate = <%=todaysdate %>
document.write(aspdate);
//--></script>
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Jul 23, 2005
does a client side script always need a server side script in order to
function?
how can i get my javascript application to send the details of a user
filled form to me without having to have a server side script?
if i have both server side and client side script in a web
application, will the resulting application run as a client or server?
i know i probably haven't made much sense, but the problem is that i'm
trying to make sense of it all.
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Jul 23, 2005
I'm looking for javascript IDE with code completition and preferably script debuging. Cross platform (Windows, Linux) would be a plus.
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Jul 23, 2005
I have javascript function in my jsp page. Function does following :
text1 += '<xupdate:insert-before></xupdate:insert-before>;
but i get exception that <jsp:root> expected . Slash is a problem. I try
change it to > but it does nothing. Is there other solution??
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Sep 22, 2005
How can I use NSS (Network Security Services) from Mozilla/Firefox
Javascript?
I'm trying to sign some data using a private key in Javascript. I know
the crypto module should allow that with the signText method, but some
of the crypto methods seem to be broken, raising Not Implemented
exceptions.
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Dec 15, 2005
I know this subject has been well discussed, but I haven't found
exactly what I'm looking for in the archives, or if it's possible.
I need to call a cgi (actually, mod_perl) script, but not on every page
hit - preferably just on the first. I'm dealing with a static site and
what I'd like to do is use javascript to read a cookie, and if the
cookie is found, I'll use the value from the cookie to display some
html.
However, if the cookie isn't found, then I need to call a perl script
that will do some processing, set a cookie, but somehow I need to get
the value back - the same value that is used to set the cookie -
without reloading the page. I know I can use javascript
src="/path/to/myscript" and have the Perl script write javascript
(setting my variable which I can use later), but then I couldn't use
the "if" logic to see if I actually need to call the Perl script as the
client side javascript will be overridden by the "src" attribute...
Example code...
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Jan 19, 2006
Is there a way in javascript to do an if else that shows a script in an
iframe? Let me know if that doesn't make sense. We have a portal and
in a portlet I need to grab these javascript links to display in the
portlet if a user selects a certain city. Let me know if this can be
done. Code:
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Mar 27, 2006
Does anyone know if there is JavaScript RAD?
I mean something like Microsoft FrontPage, but instead of creating html
files it creates JavaScript files.
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Mar 30, 2006
I was just wondering that if it is possible to do almost anything you
can do in JavaScript in PHP.
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