The Dark Side of JavaScript

Transcript

1. Javascript
   as you never saw before
   

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

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3. The magic JS
   

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4. Removing Callbacks
   

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5. The Dark Side of
   Javascript
   JS
   

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6. Symbols
   

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10. BUT BE AWARE_
    

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11. Small usage example
    

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

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13. Async Iterators_
    

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21. Promise.finally
    

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23. Promise.allSettled
    

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26. Ranges
    

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30. Readonly properties_
    

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31. Object.defineProperty
    

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33. Object.defineProperties
    

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

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35. Private class fields_
    

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38. Dynamic function creation_
    

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41. in operator_
    

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44. Dynamic instances by
    reflection_
    

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48. Bitwise Operators_
    

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49. AND
    

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51. What!?
    

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52. A B C D Result
    X 0 1 0 1 5
    Y 0 0 0 1 1
    Z 0 0 0 1 1
    

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53. String as binary data
    

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54. OR
    

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56. A B C D Result
    X 0 1 0 1 5
    Y 0 0 0 1 1
    Z 0 1 0 1 5
    

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57. XOR
    

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59. A B C D Result
    X 0 1 0 1 5
    Y 0 0 0 1 1
    Z 0 1 0 0 4
    

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60. Cryptography
    

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62. NOT
    

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64. A B C D Resultado
    X 0 1 0 1 5
    Z 1 0 1 0 10
    

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65. Existence condition
    

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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
    

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72. thank you_
    info.lsantos.dev
    

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