Replace old data with uploaded data, javascript/web

Question

So I'm developing this site that analyse specific data files (that are in XML). I'm lost at how to replace the old data with the new uploaded data.

So lets say I create this button:

<input id="upload" type="file">

But I do not want the file to actually be uploaded anywhere but rather just read so it would take the content of the XML uploaded and replace the content of an existing XML. How would I do that? I'm absolutely lost

For example:

Lets say I had an old datafile called old.xml

<data>
    <file desc="test1">
        <content>1</content>
    </file>
</data>

And someone uploaded the following XML (which is not stored but rather just read) that contained:

<data>
    <file desc="test2">
        <content>2</content>
    </file>
    <file desc="test3">
        <content>3</content>
    </file>
</data>

What I would want is that old.xml is entire replaced by the uploaded XML.

is `old.xml` on a server? in PHP you can just write the incoming data to that file — Jaromanda X, Dec 07 '16 at 08:22
The old xml is on a server. Sorry for oblivious question here but I've never done PHP (I can learn), how would I approach this using PHP? — JooHyun, Dec 07 '16 at 08:25
`how would I approach this using PHP` step 1 `I can learn`, make it so — Jaromanda X, Dec 07 '16 at 08:27

score 0 · Answer 1 · edited May 23 '17 at 12:13

0

JavaScript alone won't be able to edit a file.

Since you mentioned PHP, here are some links to get you started on 'learning':

edited May 23 '17 at 12:13

Community

1
1

answered Dec 07 '16 at 08:46

Ethan

446
3
13

Replace old data with uploaded data, javascript/web

1 Answers1