Upgrade to Pro — share decks privately, control downloads, hide ads and more …

JS under the hood

Avatar for dimko1 dimko1
August 29, 2015
Technology
0
190

JS under the hood

Just a description of how JS works

Avatar for dimko1

dimko1

August 29, 2015
Tweet

More Decks by dimko1

See All by dimko1
Anti-patterns
Avatar for dimko1 dimko1
0
56
V8
Avatar for dimko1 dimko1
0
270

Other Decks in Technology

See All in Technology
広告の効果検証を題材にした因果推論の精度検証について
Avatar for ZOZO Developers zozotech
PRO
0
170
Azure Durable Functions で作った NL2SQL Agent の精度向上に取り組んだ話/jat08
Avatar for TonyTonyKun thara0402
0
180
AWS Network Firewall Proxyを触ってみた
Avatar for nagisa_53 nagisa53
1
230
SREチームをどう作り、どう育てるか ― Findy横断SREのマネジメント
Avatar for adachi.ryo rvirus0817
0
240
Cosmos World Foundation Model Platform for Physical AI
Avatar for Takuya MINAGAWA takmin
0
880
10Xにおける品質保証活動の全体像と改善 #no_more_wait_for_test
Avatar for nihonbuson nihonbuson
PRO
2
270
AI駆動PjMの理想像 と現在地 -実践例を添えて-
Avatar for オカムラ masahiro_okamura
1
110
Amazon Bedrock Knowledge Basesチャンキング解説！
Avatar for 野口碧生 aoinoguchi
0
140
Data Hubグループ 紹介資料
Avatar for Sansan, Inc. sansan33
PRO
0
2.7k
名刺メーカーDevグループ 紹介資料
Avatar for Sansan, Inc. sansan33
PRO
0
1k
GitHub Issue Templates + Coding Agentで簡単みんなでIaC/Easy IaC for Everyone with GitHub Issue Templates + Coding Agent
Avatar for AEON aeonpeople
1
220
Bill One 開発エンジニア 紹介資料
Avatar for Sansan, Inc. sansan33
PRO
4
17k

Featured

See All Featured
RailsConf 2023
Avatar for Aaron Patterson tenderlove
30
1.3k
First, design no harm
Avatar for Per Axbom axbom
PRO
2
1.1k
Prompt Engineering for Job Search
Avatar for Mfonobong Umondia mfonobong
0
160
Effective software design: The role of men in debugging patriarchy in IT @ Voxxed Days AMS
Avatar for Kenny Baas-Schwegler baasie
0
220
個人開発の失敗を避けるイケてる考え方 / tips for indie hackers
Avatar for panda_program panda_program
122
21k
The Organizational Zoo: Understanding Human Behavior Agility Through Metaphoric Constructive Conversations (based on the works of Arthur Shelley, Ph.D)
Avatar for Dr. Kim W Petersen kimpetersen
PRO
0
240
What the history of the web can teach us about the future of AI
Avatar for Ines Montani inesmontani
PRO
1
430
Fashionably flexible responsive web design (full day workshop)
Avatar for Andy Clarke malarkey
408
66k
Claude Code のすすめ
Avatar for schroneko schroneko
67
210k
Refactoring Trust on Your Teams (GOTO; Chicago 2020)
Avatar for Rebecca Miller-Webster rmw
35
3.4k
Accessibility Awareness
Avatar for Sarah Abderemane sabderemane
0
51
SEO for Brand Visibility & Recognition
Avatar for Aleyda Solis aleyda
0
4.2k

Transcript

  1. JS under the hood

  2. Why? There is two types of developers who have no

    clue how their tools works: iOS devs and JS devs
  3. None
  4. None

  5. Object

  6. WTF IS OBJECT? An Object is a collection of properties.

    Each property is either a named data property, a named accessor property, or an internal property

  7. [[Prototype]]

  8. None

  9. Prototype Chain

  10. None

  11. this

  12. constructor

  13. None

  14. execution context

  15. Compiler Theory

  16. Steps • Tokenizing / Lexing • Parsing • Code-Generation

  17. Cast • Engine • Compiler • Scope

  18. LHS&RHS

  19. Scopes • Block Scope • Lexical Scope • Dynamic Scope(Runtime

    scope augmentation)

  20. rebinding /mutation

  21. None

  22. environment

  23. activation record model

  24. None
  25. None

  26. first-class functions

  27. free variable

  28. closure

  29. funArg problem upward/downward

  30. type casting

  31. coersion

  32. None
  33. None

  34. ?