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Thread: Back Button JS

  1. #1
    rlhanson's Avatar
    rlhanson is offline Master Glow Jedi
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    Default Back Button JS

    Does anyone have a quick script that would pop an alert that you will lose any unsaved information when they click on the browser back button?

    Much appreciated!
    Thank you,
    Lynne Hanson
    RL Hanson-Online

  2. #2
    QHF's Avatar
    QHF
    QHF is offline Nearly a Master Glow Jedi
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    Default

    This may be what your looking for I'm not a programmer but it seems to be on point.
    QHF

    "This is an Emergency?"

  3. #3
    jmarcv's Avatar
    jmarcv is offline Cranky Coder
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    Default

    Heres what I use:
    HTML Code:
    <input type="button" value="Go Back" onClick="history.go(-1)">

  4. #4
    jmarcv's Avatar
    jmarcv is offline Cranky Coder
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    Oh crap .... I am getting old - That isn't even close to what you asked for! Sorry....

  5. #5
    rlhanson's Avatar
    rlhanson is offline Master Glow Jedi
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    Quote Originally Posted by jmarcv View Post
    Oh crap .... I am getting old - That isn't even close to what you asked for! Sorry....
    I just kinda chuckled... you're usually right on JM so I figured it was just a matter of time! lol
    Thank you,
    Lynne Hanson
    RL Hanson-Online

  6. #6
    rlhanson's Avatar
    rlhanson is offline Master Glow Jedi
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    Default

    I hear this one works:

    Code:
    <script language="JavaScript" type="text/JavaScript">
    var postback = false;
    window.onbeforeunload = confirmExit;
    
    
    function confirmExit() {
    if (postback == true) {
    event.cancelBubble = true;
    }
    else
    return 'NOTE!!: Please save before leaving this page. Your information will be lost if you choose to navigate away from this page.';
    }
    </script>
    
    
    <asp:Button runat="server" ID="btnDoRegisteredPostback" Text="DoRegisteredPostBack"
    OnClientClick="postback=true;return true;" />
    <asp:Button runat="server" ID="btnDoPostback" Text="LeavePage"�
    onclick="btnDoPostback_Click"� />
    Thank you,
    Lynne Hanson
    RL Hanson-Online

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