Although erase is often used as a synonym for wipe, that term is a little misleading -- it isn't possible to actually erase hard drive data. Deleting a file only removes the file listing, which serves as a shortcut. The data is still on the computer and easily accessible to anyone with the right program and/or know-how.
First developed by Tim Berners-Lee in 1990, HTML is short for HyperText Markup Language. HTML is used to create electronic documents (called pages) that are displayed on the World Wide Web.
The most common use of JavaScript is to add client-side behavior to HTML pages, a.k.a. Dynamic HTML (DHTML). Scripts are embedded in or included from HTML pages and interact with the Document Object Model (DOM) of the page.