Question

I am using the following code to open a popup window and passing the ID of as query string.

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<script language="javascript" type="text/javascript">
function openwindow(divID) {
           window.open("pp.html?id="+divID+"","","status=yes, location=yes, width=700, height=400");
   }
</script>
</head>
<body>
<a href="#" onclick="openwindow( one )" id="one">One</a>
<br />
<a href="#" onclick="openwindow( two )" id="two">Two</a>
<br />
<a href="#" onclick="openwindow( three )" id="three">Three</a>
</body>
</html>

The scenario is, i need to show the DIV in popup window whose id is similar to querystring value. Popup window code is

<html>
<head>
<script language="javascript" type="text/javascript">
function getid() {
    if (Request.QueryString("id")!=null)
        var id = Request.QueryString("id");
        document.getElementById(id).style.display = "block";
}
</script>
</head>
<body onload="getid();">
<div style=" overflow:hidden">
<div style="margin-left:-5px;"><input type="file" style="" /></div>
</div>
<div style="width:200px; height:200px; border:1px solid #999999; background-  color:#CCCCCC; display:none" id="one">Hello! ONE</div>
<div style="width:200px; height:200px; border:1px solid #999999; background-color:#CCCCCC; display:none" id="two">Hello! TWO</div>
<div style="width:200px; height:200px; border:1px solid #999999; background-color:#CCCCCC; display:none" id="three">Hello! THREE</div>
</body>
</html>

Now, Popup window is giving error "Request is undefined".

Answer 1

You are mixing ASP.NET server side language with javascript which of course is not possible. Try like this:

function getid() {
    <% if (Request.QueryString("id") != null) { %>
        var id =  <%= Request.QueryString("id") %> ;
        document.getElementById(id).style.display =  block ;
    <% } %>
}

If you are not using a server side language you could use the following function to read query string parameters in javascript (taken from here):

function gup(name)
{
    name = name.replace(/[[]/,"\[").replace(/[]]/,"\]");
    var regexS = "[\?&]"+name+"=([^&#]*)";
    var regex = new RegExp( regexS );
    var results = regex.exec( window.location.href );
    if( results == null ) {
        return "";
    } else {
        return results[1];
    }
}

And use like this:

function getid() {
    var id = gup( id );
    if (id !=   ) {
        document.getElementById(id).style.display =  block ;
    }
}

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