Solved

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

Posted on 2013-11-06
1
282 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 500 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

Online Training Solution

Drastically shorten your training time with WalkMe's advanced online training solution that Guides your trainees to action. Forget about retraining and skyrocket knowledge retention rates.

Question has a verified solution.

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

In this article, we'll look how to sort an Array in JavaScript, including the more advanced techniques of sorting a collection of records either ascending or descending on two or more fields. Basic Sorting of Arrays First, let's look at the …
This article discusses how to create an extensible mechanism for linked drop downs.
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…

717 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