Passing strings between functions XMLHTTP.open

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  • jerm

    Passing strings between functions XMLHTTP.open

    Hi,

    I am using ajax to update a form. I call xmlHttp.open("G ET", strURL,
    false).

    The problem is that strURL is a really long string and it seems that
    javascript craps out on this long string giving me an unspecified
    error. I decided to test my theory and created a generic function to
    pass over my url string and sure enough javascript dies with the same
    error. I figured one way around it was to split my string into an
    array and then join it up again but xmlHttp.open is not a method or
    object I wrote, so I cant easily manipulate it.

    Any thoughts on a way around this?

    Regards,
    Jeremiah
  • Tom Cole

    #2
    Re: Passing strings between functions XMLHTTP.open

    On May 9, 9:59 am, jerm <jerm.hann...@g mail.comwrote:
    Hi,
    >
    I am using ajax to update a form.  I call xmlHttp.open("G ET", strURL,
    false).
    >
    The problem is that strURL is a really long string and it seems that
    javascript craps out on this long string giving me an unspecified
    error.  I decided to test my theory and created a generic function to
    pass over my url string and sure enough javascript dies with the same
    error.  I figured one way around it was to split my string into an
    array and then join it up again but xmlHttp.open is not a method or
    object I wrote, so I cant easily manipulate it.
    >
    Any thoughts on a way around this?
    >
    Regards,
    Jeremiah
    Have you tried using POST as your method? Not sure it would help but
    you can also send the parameter string in the send method, rather than
    appending to the url and sending one huge url:

    xmlHttp.open("P OST", "http://www.myserver.co m/servlet/myServlet",
    true);
    xmlHttp.send("t his=that&this2= that2");

    Just some things to think about. I have not run into a scenario where
    I was sending a url string longer than 255 characters, so I'm sorry I
    can't be of more assistance.

    Comment

    • Thomas 'PointedEars' Lahn

      #3
      Re: Passing strings between functions XMLHTTP.open

      jerm wrote:
      I am using ajax to update a form. I call xmlHttp.open("G ET", strURL,
      false).
      >
      The problem is that strURL is a really long string and it seems that
      javascript craps out on this long string giving me an unspecified
      error.
      Chances are that your crappy user agent and its API are the problem, not
      "javascript ". For example, MSIE is known to support only 2083 characters
      per URI: http://support.microsoft.com/kb/208427
      I decided to test my theory and created a generic function to
      pass over my url string and sure enough javascript dies with the same
      error.
      Which error?
      I figured one way around it was to split my string into an
      array and then join it up again but xmlHttp.open is not a method or
      object I wrote, so I cant easily manipulate it.
      It would not help you anyway. The URI needs to be complete in an HTTP
      request. Read RFCs 1945 and 2616.
      Any thoughts on a way around this?
      As you cannot prevent people from using crappy UAs, and you cannot expect
      the vendor of this particular crappy UA to get reasonable in no time, if
      that, make a POST request instead.


      PointedEars
      --
      Anyone who slaps a 'this page is best viewed with Browser X' label on
      a Web page appears to be yearning for the bad old days, before the Web,
      when you had very little chance of reading a document written on another
      computer, another word processor, or another network. -- Tim Berners-Lee

      Comment

      • jerm

        #4
        Re: Passing strings between functions XMLHTTP.open

        On May 9, 10:30 am, Thomas 'PointedEars' Lahn <PointedE...@we b.de>
        wrote:
        jerm wrote:
        I am using ajax to update a form.  I call xmlHttp.open("G ET", strURL,
        false).
        >
        The problem is that strURL is a really long string and it seems that
        javascript craps out on this long string giving me an unspecified
        error.
        >
        Chances are that your crappy user agent and its API are the problem, not
        "javascript ".  For example, MSIE is known to support only 2083 characters
        per URI:http://support.microsoft.com/kb/208427
        >
        I decided to test my theory and created a generic function to
        pass over my url string and sure enough javascript dies with the same
        error.
        >
        Which error?
        >
        I figured one way around it was to split my string into an
        array and then join it up again but xmlHttp.open is not a method or
        object I wrote, so I cant easily manipulate it.
        >
        It would not help you anyway.  The URI needs to be complete in an HTTP
        request.  Read RFCs 1945 and 2616.
        >
        Any thoughts on a way around this?
        >
        As you cannot prevent people from using crappy UAs, and you cannot expect
        the vendor of this particular crappy UA to get reasonable in no time, if
        that, make a POST request instead.
        >
        PointedEars
        --
        Anyone who slaps a 'this page is best viewed with Browser X' label on
        a Web page appears to be yearning for the bad old days, before the Web,
        when you had very little chance of reading a document written on another
        computer, another word processor, or another network. -- Tim Berners-Lee
        You are correct thomas, I ended up just breaking down my url and
        sending it in pieces. Thanks for your help!!!
        jerm

        Comment

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