Javascript \ Escape problem

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  • BlueMac
    #1

    Javascript \ Escape problem

    Greetings,

    I have some javscript mixed into a applications templating and have
    run into a problem the way javascript is handling a path for me.

    I am via the template assigning a file path to a javascript variable.

    The Tempalte: var myfile = "!FILEPATH! ";
    which becomes: var myfile = "C:\mydir\thefi le.txt";

    The issue of course being that the \'s are not escaped. I'm not as
    fluent in Javascript as I'd like to be yet and I havn't figured out a
    way to escape it so I can coninue on with the rest of the script.
    I've tried to do a search and replace but javscript is already
    interpreting the \'s as escaping a character.

    How can I either autoescape the \'s (if possible), or access the raw
    data so I can replace \ with \\?

    Any help is appriciated.

    Thanks!

    BlueMac
    Tags: None
    • Douglas Crockford
      #2
      Re: Javascript \ Escape problem

      > I am via the template assigning a file path to a javascript variable.[color=blue]
      >
      > The Tempalte: var myfile = "!FILEPATH! ";
      > which becomes: var myfile = "C:\mydir\thefi le.txt";
      >
      > The issue of course being that the \'s are not escaped. I'm not as
      > fluent in Javascript as I'd like to be yet and I havn't figured out a
      > way to escape it so I can coninue on with the rest of the script.
      > I've tried to do a search and replace but javscript is already
      > interpreting the \'s as escaping a character.
      >
      > How can I either autoescape the \'s (if possible), or access the raw
      > data so I can replace \ with \\?[/color]

      You have to do the \ correction before it gets handed to JavaScript.

        Comment

        • David Leverton
          #3
          Re: Javascript \ Escape problem

          BlueMac wrote:[color=blue]
          > I am via the template assigning a file path to a javascript variable.
          >
          > The Tempalte: var myfile = "!FILEPATH! ";
          > which becomes: var myfile = "C:\mydir\thefi le.txt";
          >
          > How can I either autoescape the \'s (if possible), or access the raw
          > data so I can replace \ with \\?[/color]

          I'm assuming the JavaScript is being run inside an HTML document? If
          so, and you know the browser will support the DOM standard, try

          <meta name="FILEPATH" content="!FILEP ATH!" />

          in the <head>, and

          var i, myfile;
          var metas = document.getEle mentsByTagName( "meta");

          for (i = 0; i < metas.length; i++)
          if (metas.item(i). getAttribute("n ame") == "FILEPATH") {
          myfile = metas.item(i).g etAttribute("co ntent");
          break;
          }

          in the script.

            Comment

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