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editing the <head> section with javascript

Answer 1

+2 A:

You can remove elements from the head, but it wont matter. The scripts have already run and removing the elements wont unload them or anything.

noah 2010-03-03 18:54:54

so if a javascript function resides in the head section and is deleted and then called again by a timeout, it will still run?

2010-03-03 19:12:04

Answer 2

A:

Try using:

document.getElementsByTagName('head').innerHTML = "";

to clear the head. document.head does not exist so this may not work.

But you may want to try to disable the JavaScript using JavaScript like suggested by noah.

See http://www.manticmoo.com/articles/jeff/programming/javascript/removing-javascript-with-javascript.php for directions. It sounds crazy but evidently it works.

Todd Moses 2010-03-03 19:02:58

wow. interesting. I'm going to have to see if I can use this! thanks.

2010-03-03 19:13:24

Answer 3

A:

As noah said, simply removing the code from the head tag won't accomplish anything. You have to actually undo what the code is doing. For example, if it's using setTimeout() to set up the timeout code you're complaining about, you need to use clearTimeout() to disable it.

Chad Birch 2010-03-03 19:06:08

Or hijack `setTimeout` by `setTimeout = function () {};`

Ates Goral 2010-03-03 19:12:46

Answer 4

A:

document.getElementsByTagName("head")[0].innerHTML = "";

// IE
var htmlEl = document.getElementsByTagName("html")[0];
htmlEl.removeChild(document.getElementsByTagName("head")[0])
var el = document.createElement("head");
htmlEl.appendChild(el);

To stop JavaScript scripts running by setTimeout, you should use clearTimeout, but for this case you should have a handler... But you're lucky, if they are defined as global variables.

Alex Ivasyuv 2010-03-03 20:57:05

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editing the <head> section with javascript

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