The Dark Side of JavaScript

Transcript

1. Javascript as you never saw before

2. cloud advocate_ who am I_ ludossan@microsoft.com {twitter, facebook, linkedin…}.lsantos.dev

3. The magic JS

4. Removing Callbacks

5. The Dark Side of Javascript JS

6. Symbols

7. None
8. None
9. None

10. BUT BE AWARE_

11. Small usage example

12. Other usage example in Node.js source code bit.ly/nodejs-symbol Check it

    out!

13. Async Iterators_

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15. None
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21. Promise.finally

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23. Promise.allSettled

24. None
25. None

26. Ranges

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28. None
29. None

30. Readonly properties_

31. Object.defineProperty

32. None

33. Object.defineProperties

34. ‘age’ hasn’t been shown because it’s not enumerable

35. Private class fields_

36. None
37. None

38. Dynamic function creation_

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40. None

41. in operator_

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43. None

44. Dynamic instances by reflection_

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47. None

48. Bitwise Operators_

49. AND

50. None

51. What!?

52. A B C D Result X 0 1 0 1

    5 Y 0 0 0 1 1 Z 0 0 0 1 1

53. String as binary data

54. OR

55. None

56. A B C D Result X 0 1 0 1

    5 Y 0 0 0 1 1 Z 0 1 0 1 5

57. XOR

58. None

59. A B C D Result X 0 1 0 1

    5 Y 0 0 0 1 1 Z 0 1 0 0 4

60. Cryptography

61. None

62. NOT

63. None

64. A B C D Resultado X 0 1 0 1

    5 Z 1 0 1 0 10

65. Existence condition

66. None

67. SHIFT

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69. Multiply and divide

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71. refs_ - imasters.com.br/desenvolvimento/o-lado-escuro-javascript - medium.com/trainingcenter/entendendo-promises-de-uma-vez-por-todas-3 2442ec725c2 - imasters.com.br/desenvolvimento/campos-publicos-e-privados-em-classes-j avascript-o-que-vem-por-ai-no-esnext -

    imasters.com.br/javascript/futuro-das-promises-no-javascript - medium.com/trainingcenter/iterators-em-javascript-880adef14495 - medium.com/trainingcenter/reflection-em-javascript-73fc0e702e2 - developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objec ts/Reflect - slides.lsantos.dev/desmistificando-heranca-e-prototipos-no-javascript - dev.to/khaosdoctor/entendendo-async-iterators-1opo

72. thank you_ info.lsantos.dev