In Firefox, Write to a File using Javascript?

Question

Situation:- I have created a installation setup(local) that returns a URL eg:- ved.test.com which is mapped to an IP 11.22.33.44. Thus to make the web application accessibl

Answer 1

You will need to create your own Firefox extension, because reading/writing local files is considered a privileged operation.

Reading/writing files using XPCOM: https://developer.mozilla.org/en-US/docs/Code_snippets/File_I_O. This won't work from your web page but only from privileged code such as extensions.