Categories
Web Development

Another Internet Explorer Peeve

Internet Explorer renders anything inside a <form> tag with a huge gap on top. Why?
Whatever.
To solve, just add this style to the form element:
style=”margin-top: 0px;”

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Categories
Web Development

JavaScript: Accessing the window’s location

Just confusing.
I was trying to access the location of the current window using
window.location.

That works, but surprisingly, that is NOT a string object, but an object.
To get a string out of the location, you must access
window.location.href
which is the full URL in the window.

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Categories
Computing Web Development

JavaScript modal windows

I have an application for which I want to get some input from the user and since the UI is already overloaded, I decided to that using a pop-up window. Since I want to make sure the user is entering the information in the pop-up or returns to the application a modal (stays on top) window is one course of action.

This is the code I used in the window that opens the popup window:
<html>
<head>
<title>Parent Window</title>
<script type=”text/javascript”>

var popup = null;
var count = 0;
var pop_name = “offshoot”;
var pu_open = false;

function open_modal()
{
var pop_local = pop_name + count;
popup = window.open(“offshoot.html”, pop_local, “width=640,height=480,status=yes”);
count++;
}

function do_modal()
{
try
{
popup.focus();
}
catch(e)
{

}

}

document.onkeyup=do_modal;
document.onmousedown=do_modal;
document.onmousemove=do_modal;
</script>

</head>
<body>

<a href=”javascript:open_modal()”>Open modal popup</a>

</body>

</html>

As for the popup window:
<html>
<head>
<title>Offshoot window</title>

<script type=”text/javascript”>

</script>

</head>
<body >
<h1>This is modal?</h1>
<textarea cols=”40″ rows=”5″ id=”comment” name=”comment”></textarea>
</body>

</html>

There are two bits to look at:

  • The big idea deals with the popup window retaining the focus with the onblur="self.focus()"
  • Because IE exists, we have to circumvent some silly errors, such as:
    The callee (server [not server application]) is not availableand disappeared;all connections are invalid. The call did not execute.
    One way to avert that is follow this advice and modify the name of the pop-up window – which I do using the count variable.
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