Mastering the Arcane Art of JavaScriptmancy @ DevSum

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

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

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

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

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

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

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

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http://bit.ly/ecma262-github

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http://bit.ly/es6-compatibility

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https://babeljs.io/

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barbarian conan red sonja kull

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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()

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

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Minion

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Warlock

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

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

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let const

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Coupon here

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tagName`some template string`

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

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

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

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Minion Wizard Thief Bard Minion Wizard Thief Bard

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Favor composition over inheritance

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Minion Wizard Thief Bard ISpellCaster IStealer SpellCasting SpellCasting Stealing Stealing

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

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

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

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http://bit.ly/javascript-oop

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Call N times

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Call N times

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Call once Call N times More Specific

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Call once Maybe + Call once maybe

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

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

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http://bit.ly/promisees

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Editor Land Browser Land

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