Mastering the Arcane Art of JavaScriptmancy @ DevSum

For many years has JavaScript been frown upon and look down on by many developers due to its quirky nature, obscure behaviors and many a one WTFs that populate its hairy APIs.

Frown upon no more! For with modern design patterns, libraries, tools and the long awaited JavaScript 6 Harmony (ES6, ES2015) writing JavaScript is now a pleasure.

Join me at the school of JavaScript-mancy as we travel along the modern landscape of writing JavaScript in 2015 and beyond, as we discover the organic evolution of this beautiful language and its thriving ecosystem, and delve in the latest features/spells/incantations of the JavaScript Arcana.

Transcript

1. View Slide

2. Jaime Gonzalez
   Enthusiastic Software developer and UX guy! @vintharas
   Work at Active Solution
   as a Cimmerian consultant...
   Blog at barbarianmeetscoding.com
   

   View Slide

3. View Slide

4. View Slide

5. View Slide

6. View Slide

7. View Slide

8. View Slide

9. View Slide

10. View Slide

11. View Slide

12. View Slide

13. View Slide

14. View Slide

15. View Slide

16. View Slide

17. View Slide

18. View Slide

19. View Slide

20. View Slide

21. View Slide

22. https://www.destroyallsoftware.com/talks/wat
    

    View Slide

23. View Slide

24. View Slide

25. View Slide

26. https://www.destroyallsoftware.com/talks/wat
    

    View Slide

27. View Slide

28. View Slide

29. View Slide

30. View Slide

31. View Slide

32. View Slide

33. View Slide

34. View Slide

35. View Slide

36. View Slide

37. View Slide

38. View Slide

39. http://bit.ly/js-function-scope
    

    View Slide

40. View Slide

41. View Slide

42. View Slide

43. View Slide

44. View Slide

45. 1999
    https://en.wikipedia.org/wiki/ECMAScript
    2009
    

    View Slide

46. https://en.wikipedia.org/wiki/ECMAScript
    2015
    1999
    2009
    

    View Slide

47. https://en.wikipedia.org/wiki/ECMAScript
    2015
    1999
    2009
    2016
    

    View Slide

48. http://bit.ly/ecma262-github
    

    View Slide

49. http://bit.ly/es6-compatibility
    

    View Slide

50. https://babeljs.io/
    

    View Slide

51. View Slide

52. View Slide

53. View Slide

54. View Slide

55. View Slide

56. barbarian
    conan
    red sonja
    kull
    

    View Slide

57. View Slide

58. View Slide

59. View Slide

60. View Slide

61. View Slide

62. View Slide

63. View Slide

64. Minion.prototype
    toString
    function Minion()
    hp
    name
    Properties shared
    across all minions.
    Use for Methods
    Properties stored
    per instance.
    Use for data
    var minion = new Minion()
    

    View Slide

65. View Slide

66. Minion
    Wizard
    hp
    name
    toString
    mana
    element
    castsSpells
    toString
    More
    Inheritance!
    

    View Slide

67. View Slide

68. View Slide

69. View Slide

70. View Slide

71. View Slide

72. Minion
    

    View Slide

73. Warlock
    

    View Slide

74. View Slide

75. View Slide

76. View Slide

77. http://bit.ly/js-this-is-nuts
    

    View Slide

78. View Slide

79. View Slide

80. View Slide

81. View Slide

82. fixes the most common
    issues with the this
    keyword !!
    http://bit.ly/es6-arrow-functions
    

    View Slide

83. let const
    

    View Slide

84. View Slide

85. Coupon here
    

    View Slide

86. View Slide

87. View Slide

88. View Slide

89. View Slide

90. View Slide

91. View Slide

92. View Slide

93. View Slide

94. View Slide

95. View Slide

96. View Slide

97. View Slide

98. View Slide

99. View Slide

100. View Slide

101. View Slide

102. tagName`some template string`
     

     View Slide

103. View Slide

104. View Slide

105. View Slide

106. View Slide

107. http://bit.ly/bmc-es6
     http://bit.ly/es6-all
     http://bit.ly/js-zero-bullshit
     

     View Slide

108. View Slide

109. Tight coupling
     Single rooted hierarchy
     Types are often too general to map to real problems
     Creates Rigid Taxonomies
     Doesn’t Adapt well to Change
     

     View Slide

110. Minion
     Wizard
     toString
     castsSpells
     toString Thief
     Bard
     castsSpells
     steals
     playsMusic
     toString
     steals
     toString
     

     View Slide

111. Minion
     Wizard Thief
     Bard
     Minion
     Wizard Thief
     Bard
     

     View Slide

112. Favor composition
     over inheritance
     

     View Slide

113. Minion
     Wizard Thief
     Bard
     ISpellCaster IStealer
     SpellCasting SpellCasting Stealing
     Stealing
     

     View Slide

114. Wizard SpellCasting castsSpells
     castsSpells
     var merlin = new Wizard();
     Merlin.castsSpell(lightningBolt);
     spellCasting.castsSpell(lightningBolt);
     ISpellCaster
     

     View Slide

115. View Slide

116. View Slide

117. View Slide

118. View Slide

119. View Slide

120. Wizard Thief Bard
     canCastSpells
     canBeIdenti...
     canSteal
     canBeIdenti...
     canSteal
     canBeIdenti...
     canCastSpells
     

     View Slide

121. Wizard Thief Bard
     canCastSpells
     canBeIdenti...
     canSteal
     canBeIdenti...
     canSteal
     canBeIdenti...
     canCastSpells
     canBePositioned canBePositioned
     canBePositioned
     

     View Slide

122. View Slide

123. View Slide

124. http://bit.ly/javascript-oop
     

     View Slide

125. View Slide

126. View Slide

127. View Slide

128. View Slide

129. View Slide

130. View Slide

131. View Slide

132. View Slide

133. View Slide

134. Call N times
     

     View Slide

135. Call N times
     

     View Slide

136. Call once
     Call N times
     More
     Specific
     

     View Slide

137. Call once
     Maybe
     +
     Call once
     maybe
     

     View Slide

138. Call twice
     After
     +
     Call twice
     maybe and
     send
     notification
     Send notif.
     Maybe
     +
     

     View Slide

139. http://bit.ly/javascriptmancy-fp-create-abstractions
     

     View Slide

140. View Slide

141. View Slide

142. View Slide

143. http://bit.ly/promisees
     

     View Slide

144. View Slide

145. View Slide

146. View Slide

147. View Slide

148. View Slide

149. View Slide

150. Editor Land Browser Land
     

     View Slide

151. View Slide

152. View Slide

153. View Slide

154. View Slide

155. View Slide

156. View Slide

157. View Slide

158. View Slide

159. View Slide

160. View Slide