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Thread: Replace any & in a link with %26

  1. #1
    Join Date
    Feb 2013
    Posts
    2

    Question Replace any & in a link with %26

    Hello,

    I will try to be as descriptive and clear as possible; IT and web development isn't my background, but fate has made me the main web developer I have been searching this forum and Googling for quite some time on this.

    Problem: I need to change any instance of an ampersand (&) to %26 in a specific URL.

    Complications: The URL that needs to have all & changed to %26 is being made from the referring URL using document.referrer. Our school uses a product called "EZProxy" to authenticate users into other websites, but it only works if the & in a link is a %26. Also, not all URL's can have this change on the page and still work, only this specific one. I'm also a beginner and admittedly don't really know what I'm doing.

    What I'm using right now:


    Code:
    <script>                     
        document.write('<a href="http://test.ezproxy.edu/login?url=' + document.referrer + '" target="_blank">Click Here</a>');
    </script>
    This brings up the URL from the referring page pretty well and adds the proper prefix I need (the test.exproxy.edu" part), but it also needs to change any instance of & to %26 and I just don't know how to do it. I figured out how to change a & to a %26 if it's plain text, but I can't crack how to get it to do it with the URL provided by document.referrer. Is that even possible?

    Thanks for any suggestions and pointers, any help appreciated.

  2. #2
    Join Date
    Oct 2010
    Location
    Versailles, France
    Posts
    1,290
    See this page about encodeURIComponent

    Code:
    alert(encodeURIComponent('&jules')); //=> %26jules
    But there is not certain you have to encode this ampersand & !

    See too this page which explains the different uses of encodeURI and encodeURIComponent

  3. #3
    Join Date
    Feb 2013
    Posts
    2

    Thumbs up Thanks for the help!

    Thanks for the links and example! I appreciate the help for a beginner - with the links, example, and some tinkering, I came up with a solution that worked for me. The encodeURIComponent option worked best for it. For the curious, it's below:


    Code:
    document.write('<a href="https://EZPROXY.prefix.example.edu/open?url=' + encodeURIComponent(document.referrer) + '" target="_blank">TEXT OF LINK</a>');

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