creating another module example to provide html documents
creating a chapter 10 javascript file
adding a link to link between javascript.html and ch10.js
creating example 10.1 to show how regular expression works
creating example 10.2 to validate email
creating a function to validate date and format it in another format
modifying function escapeHTML using regular expression
modified function escape html using regular expr
removing the conflicts marks
adding a pattern to search for bad words existence