Question

function getWindowsUserName()
{
    var WinNetwork = new ActiveXObject("WScript.Network");
    var urlToSite = createCustomURL(WinNetwork.UserName);
    document.getElementById("psyncLink").src = urlToSite;       
    if(requestingPassword())
    {
        alert("password button screen");
    } else {
        alert("direct password required");
    }
}

function requestingPassword()
{       // <-- This is the line that is getting the error
                          // Unspecified error
                          // Code: 80004005
                          // Microsoft JScript Runtime error
    var btn = window.frames[1].document.getElementsByName("SUBMIT-password.pss");
    if (btn.length == 0) {
        return false;
    } else {
        return true;
    }
}

I wanted requestingPassword to be a bool method but then i learned that Javascript doesn;t support method names like

public bool nameofmethod()

I think the syntax is correct. Any help would be appreciated!

Answer 1

requestingPassword() is called immediately after setting the URL of a frame. It’s extremely likely that the page did not finish loading when the frames[1].document..... method was called. In that case, frames[1].document is null, which causes an error to be thrown.

To fix this problem, simply call the requestingPassword function in an onload event.

var frame = document.getElementById("psyncLink");
frame.onload = function() {
    frame.onload = null;
    if (requestingPassword()) {
        alert("password button screen");
    } else {
        alert("direct password required");
    }
};
frame.src = urlToSite;

• Note 1: Instead of referring the frame by window.frames[1] (which is not easy to maintain), use frame.contentWindow (which is supported extremely well, and does not depend on knowledge of the frame’s position)
• Note 2: Setting onload as a property will not bind an event in IE6-. If you have to support IE6, use .attachEvent("onload", func..);.