"Node was not found" error

yawnmoth · Nov 9, 2006

When I visit the following webpage:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>Test</title>
</head>

<body>
<div id="demo">this is a test...</div>
<script>
result = document.createElement("span");
result.style.color = "#f00";
result.style.fontWeight = "bold";
result.appendChild(document.createTextNode(" ...that has been a
success"));

var demo = document.getElementById("demo");

demo.parentNode.replaceChild(demo,result);
</script>
</body>

I get this error (in FF2):

uncaught exception: [Exception... "Node was not found" code: "8"
nsresult: "0x80530008
(NS_ERROR_DOM_NOT_FOUND_ERR)" location:
"http://www.domain.tld/test.html Line: 17"]

Randy Webb · Nov 10, 2006

David Golightly said the following on 11/9/2006 5:39 PM:

Also I would discourage you from using script tags within the <body>
section of your document, unless you have a good reason to do so (and
there aren't many). Put the <script> tag in the <head> section and
wrap your code in a window.onload handler, like this:

<script>
window.onload = function() {
var something = document.getElementById('something');
// ... code goes here
}
</script>

And you call that "good, modern Javascript style" to leave out the type
attribute (which is mandatory)? No feature detection. Hmmm.

Also, could you please explain how to wrap code in a function that uses
document.write to add advertisement to pages and fire it onload without
wiping out the page?

Check out http://www.onlinetools.org/articles/unobtrusivejavascript/
for some good, modern Javascript style.

If the free chapter is indicative of the entire book, no thanks.

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"Node was not found" error

yawnmoth

Randy Webb

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