After 20 years of JavaScript, modern web browsers started to understand a new binary format called WebAssembly. WebAssembly is known for its amazing performance, compact file size and portability. In this session, we will compare the execution model of JavaScript and WebAssembly. We also discuss about the techniques that helps WebAssembly to offer an incredible performance.

1. WEBASSEMBLY
Jawahar
www.jawahar.tech
Programmer,
ThoughtWorks

3. Brendan Eich
Author of JavaScript
NetScape Navigator released the
first version of JavaScript
Developed over the span of 10
days
Primary Focus - DOM
Manipulation

5. AJAX

6. Rise of
Single Page Applications

16. JavaScript is
Dynamic Typed

17. JavaScript is
Dynamic Typed

19. Machine Code Processor

22. Leverage existing languages...

23. Another Runtime Overhead....

24. More time spends on parsing....

25. Streaming Compilation

26. WebAssembly gives predictable
performance

29. Hot Function
Hot Function
Hot Function
Machine
Code

30. Optimized to
machine code
Deoptimized back to
bytecode interpretation

31. Browser Compatibility

33. THREADING
Proposed Features

37. Shared Array Buffer

38. GARBAGE COLLECTOR
Proposed Features

39. ACCESS TO DOM API
DOM API
Proposed Features

40. https://blog.scottlogic.com/2018/07/20/wasm-future.html
Proposed Features

41. Speed up your existing
web applications
Use Cases

42. Port existing desktop
applications to web
Use Cases

43. Leverage existing C / C++
libraries
Use Cases

44. No need to limit yourself with
JavaScript
Use Cases

45. Construct 3

46. JavaScript and WebAssembly
Work Together

47. Lets see a demo...