JavaScript: Add a prompt dialogue box to confirm the changes when user selects to “close” the InProgress work window.

Here is the sample on how you can have a prompting dialogue box when user tries to exit the window with work in progress.

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Sample Code: Just copy paste this code in your html file and it should work.
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<script language="JavaScript">

var isChoice = 0;

function callAlert(Msg,Title){

txt = Msg;
caption = Title;
vbMsg(txt,caption)
alert(isChoice);

}
</script>

<script language="VBScript">

Function vbMsg(isTxt,isCaption)

testVal = MsgBox(isTxt,3,isCaption)
isChoice = testVal

End Function

</script>


<input onclick="callAlert('Do you want to save the changes to Document1?','Document1')" type="button" value="Exit">

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Please contact me @ shasiza@gmail.com if you have any question or issues implementing this script.