Browser fingerprints – the invisible cookies you can’t delete

https://nakedsecurity.sophos.com/2017/10/30/firefox-takes-a-bite-out-of-the-canvas-super-cookie/
https://nakedsecurity.sophos.com/2014/12/01/browser-fingerprints-the-invisible-cookies-you-cant-delete/

headless-chrome - getting started in ruby

headless-chrome

- Install Chrome 59 or later from google.com/chrome

- download chromedriver and put in a new folder called 'chromedriver'; so the path to the binary is similar to - /home/sai/chromedriver/chromedriver

- now we have to add the above binary's path to PATH 

-- Open the below file in nano editor

nano ~/.bash_profile
-- add the below line
PATH=$PATH:/home/sai/chromedriver export PATH

- gem install selenium-webdriver

- gem install chromedriver-helper

- Now we can start executing the scripts found in -  https://readysteadycode.com/howto-scrape-websites-with-ruby-and-headless-chrome

onmount, rsjs - Guidelines on how to structure your JavaScript in a standard non-SPA web application

http://ricostacruz.com/rsjs/
https://www.npmjs.com/package/onmount
https://github.com/rstacruz/scriptjs/

Using bootstrap to hide columns in table

https://stackoverflow.com/questions/18362893/using-bootstrap-how-can-i-hide-columns-in-my-table