Answers for "include javas cript html pag"

uninstall phpmyadmin

$ sudo apt-get purge phpmyadmin

how to delete database in phpmyadmin

Go to phpmyadmin home page
  Click on data base
  select the database , you want to delete(put cheak mark)
  Click Drop

import js in html

<script type="text/javascript" src="yourfile.js"></script>