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How JavaScript Works

Sponsored · Ship Features Fearlessly Turn features on and off without deploys. Used by thousands of Ruby developers. →
Avatar for arunoda arunoda
November 18, 2015
Programming
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1

How JavaScript Works

A brief introduction to how JavaScript works internally.

Avatar for arunoda

arunoda

November 18, 2015

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Transcript

  1. How JavaScript Works @arunoda

  2. Is It Fast?

  3. For Server Side Apps, Really?

  4. JavaScript VMs

  5. V8
 Spider Monkey
 Chakra Nitro

  6. V8 - The King

  7. For Chrome by Google Used in Node.js, MongoDB Cool Features

  8. JavaScript Execution

  9. None

  10. JavaScript is Single Threaded

  11. huh!

  12. Eventloop

  13. Eventloop

  14. Eventloop

  15. Non Blocking I/O

  16. Non Blocking IO OS Level I/O Queues

  17. Java - nio Python - asyncio Non Blocking I/O isn’t

    Something New

  18. This is the only way! But in JS

  19. None
  20. None

  21. Node.js

  22. Is Node.js Fast?

  23. Pure JavaScript is Super Fast

  24. Non Blocking IO is fast, efficient

  25. JS - C++ communication is slow here

  26. Don’t block Eventloop avoid CPU intensive tasks

  27. Still, Why Node.js?

  28. CPU Intensive Kernel Level Stuff

  29. Highly Concurrent Easy to write

  30. Thank You! @arunoda