delete XML node using javascript in firefox

Question

Im trying to delete a node in XML file using Javascript. The used browser is Firefox. Im reaching the node which I want to delete successfuly, then Im trying delNode.ParentNode.RemoveChild(delNode) but when i went back to the xml file on my harddisk, the node was still there. I need to delete the whole node (not only children). If someone could guide me to what to do, I'll be so greatful ;) Thanks

Bjorn · Accepted Answer · 2009-12-07 05:43:45Z

1

That should remove delNode. Are you getting an error? What is the result of delNode.parentNode.removeChild(delNode) ? I do the same thing all the time and it works for me.

I'm sorry I missed the part about writing it back to the file. Use nsiFile to do that and a chrome:// url. In order to take advantage of these things you'll probably have to create a directory with a directory called 'chrome' which will have your script, a chrome.manifest file.

edited Dec 7, 2009 at 5:43

answered Dec 6, 2009 at 21:38

Bjorn

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4 Comments

Beso Over a year ago

Thanks for answering. when implementing this method delNode.parentNode.removeChild(delNode), my code stop on this line and doesn't do the rest of the functions. I tried another way by y=xmlDoc.getElementsByTagName("file")[0]; window.alert(y); xmlDoc.documentElement.removeChild(y); In the latter case, i didn't get an error and all the code was implemented in my browser, but when i went back to the xml file on my harddisk, the node was still there. I don't know whats wrong since it is the first time i try this. Any idea! and thanks a lot

bobince Over a year ago

Erm. Altering the DOM only changes your in-memory loaded copy, it doesn't write back to the file you loaded it from. You would need to re-serialise the DOM back to an XML file to replace the disc copy. If you are in a web page (not browser chrome) you will have no access to write to the local filesystem at all.

Bjorn Over a year ago

Oh I missed that whole part about writing it back to file. That's right you need to use the chrome:// url and nsiFile class to write the file to disk.

Bjorn Over a year ago

Updated answer with relevant information that should help you hopefully.

LPL · Accepted Answer · 2011-12-21 02:18:04Z

0

Thanks for the help. I couldn't find a way to change the content of the file in javascript so I used PHP. I was trying simply to delete the first node in my xml activity1.xml. Here is the code:

$xdoc = new DomDocument;
$xdoc->Load('images\activity\activity1.xml');
$xdoc->documentElement->removeChild($xdoc->documentElement->childNodes->item(1));
$xdoc->save('images\activity\activity1.xml');

It simply delete the first node whatever children it has ;)

edited Dec 21, 2011 at 2:18

LPL

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answered Dec 7, 2009 at 18:54

Beso

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