A data structure that can hold
key-value pairs.
This problem has been shown to some of the top Javascript experts in the world and they could not see the attack. — Douglas Crockford
The good parts of Javascript & the Web (FE Masters Course) - https://frontendmasters.com/courses/good-parts-javascript-web/
Written version of the Security problem(article) - http://tinyurl.com/yaxq9seo
The module pattern in depth(article) - https://toddmotto.com/mastering-the-module-pattern/
History of Javascript(video) - https://www.youtube.com/watch?v=wWi9lPEfNHc