Want to win a PS4? Go Premium and enter to win our High-Tech Treats giveaway. Enter to Win

x
?
Solved

JavaScript: URL Encode All Non-whitelisted Characters Using _ instead of %

Posted on 2013-11-06
1
Medium Priority
?
288 Views
Last Modified: 2013-11-07
I want JavaScript functions that will work just like escape() and unescape() that use an underscore instead of a percent and encode all non-whitelisted charachters.

My function below does not work, as the example demonstrates:
http://jsfiddle.net/XVqeR/

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta charset="utf-8" />
<title>Demo</title>
</head>
<body>

<script type="text/javascript">
//<![CDATA[
// Thanks, leakim971
var x = 'A _test_ "1-2-3" 50%';
alert('The fist and last line should be the same:\n\n'+x+'\n'+escapeNonWhitelistedU(x)+'\n'+unescapeU(escapeNonWhitelistedU(x)));


function escapeNonWhitelistedU(str) {
    var escapechar = "%";
    var whitelist = "bcdefghijklmnopqrstuvwxyzBCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_";
    return str.replace(/(.)/g,function($1) { return whitelist.indexOf($1)<0?escapechar+$1.charCodeAt(0).toString(16):$1; });
}

function unescapeU(str) {
 return unescape(str.replace(/_/g,"%"));
}

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

Open in new window

0
Comment
Question by:hankknight
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 
LVL 82

Accepted Solution

by:
leakim971 earned 2000 total points
ID: 39629164
your escape character CAN'T be in your whitelist else how to differentiate both?

the same way escape convert % to %25

you should use a char not in your whitelist so you know when you found it it's the escape char
0

Featured Post

[Webinar] Lessons on Recovering from Petya

Skyport is working hard to help customers recover from recent attacks, like the Petya worm. This work has brought to light some important lessons. New malware attacks like this can take down your entire environment. Learn from others mistakes on how to prevent Petya like worms.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Nothing in an HTTP request can be trusted, including HTTP headers and form data.  A form token is a tool that can be used to guard against request forgeries (CSRF).  This article shows an improved approach to form tokens, making it more difficult to…
Originally, this post was published on Monitis Blog, you can check it here . In business circles, we sometimes hear that today is the “age of the customer.” And so it is. Thanks to the enormous advances over the past few years in consumer techno…
The viewer will learn the basics of jQuery, including how to invoke it on a web page. Reference your jQuery libraries: (CODE) Include your new external js/jQuery file: (CODE) Write your first lines of code to setup your site for jQuery.: (CODE)
The viewer will learn the basics of jQuery including how to code hide show and toggles. Reference your jQuery libraries: (CODE) Include your new external js/jQuery file: (CODE) Write your first lines of code to setup your site for jQuery…

636 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question