Is it possible to read line per line from a file In JavaScript win8?

Question

Hi , 

i would like to make a function that can manipulate data from a file and read them  line per line , I was wondering if that's possible 

Example : if a file named exemple.txt containts 

007

008

009

005 

how to returns value seperatly and store them in a variable? 

thank you 

Answer 1

Try Windows.Storage.FileIO.readLinesAsync or Windows.Storage.PathIO.readLineAsync. These read the file into a vector object, which you can then iterate through to process the individual lines.

Kraig

Author, Programming Windows 8 Apps with HTML, CSS, and JavaScript, a free ebook from Microsoft Press

Answer 2

Thank you Mr. kraig but this is the libraries , is there any examples on how to use them? would you mind if you show me somes examples or refer me to a good tutorial ? I can't find

Thanks

Answer 3

It's quite straightforward. For example, if you have a file called data.txt in your local appdata, use this code:

Windows.Storage.PathIO.readLinesAsync("ms-appdata:///local/data.txt").done(function (lines) {    
    lines.forEach(function (line) {
        console.log(line);
    });
});

If you have a StorageFile instead of a path or URI, then use FileIO.readLinesAsync instead. As you can see, the result of either function is a vector you can iterate with forEach, where the forEach function gets each line in turn.

Answer 4

Thank you Sir!  and nice tutorial you have ! I will read it