This is a task I have to do for academia, is to develop a web site allowing the user to Sign up and login however without the use of a database as the backend. After a lot of thought and consideration I was perhaps going to tackle this problem by writing the sign up details to a text file in perhaps a comma delimited CSV file again when logging in read the detail from a CSV file. I was going to do this in JavaScript. After initial research it appears that most modern browsers won't allow the creation of a text file on the local machines hard disk for security reasons. Please note that the file storing the user details will be stored on the local hard disk.
Any help on the above problem much appreciated.