How to process uploaded file using Javascript

Question

I am trying to process an XML file using Javascript.

xhttp.open("GET","exportproject.xml",false);

What I want to do is, let the user specify the file (instead of hard-coding it to exportproject.xml) using file uploader and then process the same using Javascript instead of sending it to the server.

Is it possible?

Nadh · Accepted Answer · 2012-04-26 07:23:49Z

8

You may want to take a look at the HTML5 FileReader API - http://www.html5rocks.com/en/tutorials/file/dndfiles/

answered Apr 26, 2012 at 7:23

Nadh

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Comments

jordancpaul · Accepted Answer · 2012-04-26 07:29:36Z

If you don't mind a solution that requires a modern browser (basically, ie 9+) you can use the html5 file API with a basic <input type="file">.

Take a look at this link, there are a number of excellent examples to get you started.

Dandy · Accepted Answer · 2012-04-26 07:15:20Z

Javascript cannot read a file from the client machine (where the browser runs). That would be a security violation. You will have to submit the file to server and process it.

it doesn't make sense to say that you violate less security submitting to the server than processing locally.

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