JavaScript: A Brief History

JavaScript: A Brief History

This deck is a Lunch & Learn presentation I gave at 7Geese ( to share with the team a bit about the language I write in every day while building the front-end of 7Geese.


Kevin Salter

March 23, 2016


  1. JavaScript (/ˈdʒɑːvəˌskrɪpt/) March 2016 • lunch & learn A BRIEF

  2. JavaScript (/ˈdʒɑːvəˌskrɪpt/) is a high-level, dynamic, untyped, and interpreted programming

    language. ~ Wikipedia
  3. Anyway, it’s a programming language that, when used in a

    browser, helps to create user interfaces by handling data and logic while manipulating the Document Object Model (DOM). ~ Me
  4. None
  5. None
  6. Document Object Model (DOM)

  7. Document Object Model (DOM)

  8. JavaScript is one of the most popular programming languages on

    planet Earth.
  9. None
  10. It doesn’t just run on the client (web browser)…

  11. …it runs on the server too!

  12. A few startups using Node.js in production

  13. None
  14. None
  15. None
  16. May 29, 2015 Netflix now accounts for almost 37% of

    downstream Internet traffic in North America during peak evening hours. “
  17. Buuuuuuuuuut

  18. JavaScript has a checkered past, and carries a lot of

    baggage, such as some considering it a “toy language”.
  19. …some have claimed JavaScript is not used by Real Programmers™

  20. It’s also known for having several, umm, flaws…

  21. …and some people are just haters…

  22. …others are pretty clever about it, though.

  23. So what's the deal?! A quick overview the history of

    Javascript can help us understand this language a bit more.
  24. None
  25. Question #1 How old is JavaScript?

  26. Answer 21 years old (almost) JavaScript was created in 1995

    by Brandon Eich while he was working at Netscape.
  27. Question #2 How long did it take Eich to create

  28. Answer 10 days

  29. Why was JavaScript invented in the first place? Question #3

  30. We aimed to provide a “glue language” for the Web

    designers and part-time programmers who were building Web content from components such as images, plugins, and Java applets. “
  31. Question #4 What was JavaScript’s original name?

  32. Answer That’s the biggest trick question of all time…

  33. It was originally called Mocha. That name was chosen by

    Marc Andreessen, founder of Netscape.
  34. In September of 1995 the name was changed to LiveScript.

    Then in December of the same year, after receiving a trademark license from Sun Microsystems (creators of Java), the name JavaScript was adopted.
  35. None
  36. ECMAScript 2015 ECMAScript 6 ECMAScript Harmony aka aka

  37. Technical Committee 39 (TC39)

  38. examples of idiosyncratic weirdness aka mistakes in JavaScript Let’s take

    a look at a couple
  39. But first!

  40. None
  41. None
  42. 1. addition operator where it operates on two numbers 2.

    concatenation operator where it operates on two strings 3. unary operator attempts to convert the operand to a number (type coercion) The “+” operator
  43. None
  44. One of the biggest mistakes in JavaScript is == and

    === Equality 1 == “1” // true 1 === “1” // false
  45. None
  46. The Solution

  47. So, if we have to use JavaScript everywhere, how do

    we try to not make things blow up all the time?!?!? So, if we have to use JavaScript everywhere, how do we try to not make things blow up all the time?!?!?
  48. Linting Linting

  49. None

  51. None