How to Convert this PHP code to Jquery ?

Hi Team,

   i have PHP code, here i need to convert this code to jquery in my application. If there is know anyone could you share the knowledge.

$xmlString;

if (isset($_POST['xmlString'])){

    $filename  = $_POST['xmlFilename'];

    $xmlString = stripslashes($_POST['xmlString']);

    $newFile = "_data/".$filename.".edit.xml";

    //write new data to the file, along with the old data

    $handle = fopen("../".$newFile, "w");

    if (fwrite($handle, $xmlString) === false) {

        echo "{error:\"Couldn't write to file.\"}";

    }

    else {

        echo "{filename:\"".$newFile."\"}";

    }

    fclose($handle);

}

Regards

Nanda Kishore.CH