ͳΜͱͳ͘+4ॻ͍ͯΔਓ΁ 5PNPIJTB0EB(.01FQBCP *OD 5FDI.FFUJOH)PTUJOH +BWB4DSJQUͷ;Γ͔͑Γձ

ϓϦϯγύϧΤϯδχΞ 5PNPIJTB0EB!MJOZPXT ٕज़෦ٕज़ج൫νʔϜ

͓΅͍͑ͯ·͔͢ʁ

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XFCΞϓϦέʔγϣϯ։ൃͯ͠Δ ͕ɺKT͕ϝΠϯ͡Όͳ͍

ͳΜͱͳ͘+4ॻ͍ͯ·͢ʂ

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5SBOTQJMF τϥϯεύΠϥ w#BCFM w#VCMF τϥϯεύΠϧ͕ඞཁͳݴޠ w5ZQF4DSJQU w$P⒎FF4DSJQU

Ͱɺ&4͸Կ͕͏Ε͍͠ͷʁ

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ʘͦ΋ͦ΋ Α͘Θ͔Βͳ͍Ͱ͢ ϓϩτλΠϓϕʔε ʢͪͳΈʹ๻͸޷͖Ͱ͢ʣ

Ͱ͢ΑͶ ??

ܧঝͷྫ function Employee() { this.name = ""; this.dept = "general"; } function Manager() { Employee.call(this); this.reports = []; } Manager.prototype = Object.create(Employee.prototype); function Worker() { Employee.call(this); this.projects = []; } Worker.prototype = Object.create(Employee.prototype); function Engineer() { Partner.call(this); this.dept = "engineering"; } Engineer.prototype = Object.create(Worker.prototype); var opo = new Engineer(); opo.dept; // => "enginneering"

֦ுͷྫ function Point(x, y) { this.x = x; this.y = y; } var p = new Point(3, 4); p.x // => 3 p.y // => 4 Point.prototype.r = function() { return Math.sqrt((this.x * this.x) + (this.y * this.y)); }; p.r();

ײ૝ wܧঝͱ͍͏ΑΓίϐʔʹ͍ۙ wந৅Խ͞Εͨ΋ͷͱ࣮ଶͷؔ܎͕ͳ͍શ࣮ͯଶ wͳͷͰΑΓૄ݁߹ͳΦϒδΣΫτ

·ͱΊ w௕͍ྺ࢙Λܦͯ΍ͬͱҰ؏ੑ͕ग़͖ͯͭͭ͋Δ wͨͩ͠ɺա౉ظͳͷͰ༷ʑͳπʔϧ΍पลϥΠϒϥϦ ͕୔ࢁग़ݱͯ͠͸ফ͍͍͑ͯͬͯΔ wࠓ΋ͳ͓৽͍͠ϓϩϙʔαϧ͕HJUIVCʹ্͕͍ͬͯͯ มԽ͍ͯ͠Δதɺϒϥ΢β͔ΒαʔόαΠυ͸ͨ·ͨ ϞόΠϧ΋Χόʔ͢Δݴޠ͸ແࢹͰ͖ͳ͍ͷͰ͋Δ

߈Ί͍ͯ͜͏+BWB4DSJQU

܅΋αϩϯʹ͓͍Ͱʁ ࠷৽৘ใΛνΣοΫˠ !MJOZPXT

͓ΘΓ