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    • Showing results for:
    • JavaScript
    • Introducing ES2015
    • Objects and New Collection Types
    • Close
  • Amy Tomey
    Amy Tomey
    12,847 Points

    classroom size doesn't change...

    Posted on Jun 10, 2021 by Amy Tomey
    Amy Tomey
    12,847 Points
    • JavaScript
    • Introducing ES2015
    • Objects and New Collection Types
    • Set

    1 Answer

  • Rick S
    Rick S
    11,273 Points

    What does he mean by "regular objects"? (2:50)

    Posted on Feb 16, 2021 by Rick S
    Rick S
    11,273 Points
    • JavaScript
    • Introducing ES2015
    • Objects and New Collection Types
    • For...Of

    2 Answers

  • Kayc M
    Kayc M
    12,593 Points

    Can't log map using template literals, why?

    Posted on Feb 18, 2020 by Kayc M
    Kayc M
    12,593 Points
    • JavaScript
    • Introducing ES2015
    • Objects and New Collection Types
    • Map

    2 Answers

  • <noob />
    <noob />
    17,063 Points

    how the teacher added sarah for example to the classrom set if he didnt declared sarah?

    Posted on Jun 29, 2019 by <noob />
    <noob />
    17,063 Points
    • JavaScript
    • Introducing ES2015
    • Objects and New Collection Types
    • Set

    2 Answers

  • Miguel Barra
    Miguel Barra
    6,855 Points

    I don't get the difference between forEach and for of

    Posted on May 6, 2019 by Miguel Barra
    Miguel Barra
    6,855 Points
    • JavaScript
    • Introducing ES2015
    • Objects and New Collection Types
    • For...Of

    1 Answer

  • Michael Pashkov
    Michael Pashkov
    22,024 Points

    Why let declared once?

    Posted on Jul 24, 2018 by Michael Pashkov
    Michael Pashkov
    22,024 Points
    • JavaScript
    • Introducing ES2015
    • Objects and New Collection Types
    • Map

    1 Answer

  • Leo Marco Corpuz
    Leo Marco Corpuz
    18,975 Points

    I thought the values are set as strings

    Posted on Mar 9, 2018 by Leo Marco Corpuz
    Leo Marco Corpuz
    18,975 Points
    • JavaScript
    • Introducing ES2015
    • Objects and New Collection Types
    • Map

    1 Answer

  • Denis Savenko
    PLUS
    Denis Savenko
    Courses Plus Student 6,994 Points

    JavaScript Map is like Python dictionary?

    Posted on Oct 10, 2017 by Denis Savenko
    Denis Savenko
    Courses Plus Student 6,994 Points
    • JavaScript
    • Introducing ES2015
    • Objects and New Collection Types
    • Map

    1 Answer

  • Hasan Rayan
    PLUS
    Hasan Rayan
    Courses Plus Student 91 Points

    Why do we need a Map, if we have Object?

    Posted on Oct 5, 2017 by Hasan Rayan
    Hasan Rayan
    Courses Plus Student 91 Points
    • JavaScript
    • Introducing ES2015
    • Objects and New Collection Types
    • Map

    2 Answers

  • nfs
    nfs
    35,526 Points

    I don't understand one thing in this video... That's all.

    Posted on Sep 26, 2017 by nfs
    nfs
    35,526 Points
    • JavaScript
    • Introducing ES2015
    • Objects and New Collection Types
    • For...Of

    4 Answers

  • Sheryl Darroch
    seal-mask
    .a{fill-rule:evenodd;}techdegree seal-36
    Sheryl Darroch
    Treehouse Project Reviewer

    Why does he use [0] and [1] in his for of loop?

    Posted on Aug 21, 2017 by Sheryl Darroch
    .a{fill-rule:evenodd;}techdegree seal-36
    Sheryl Darroch
    Treehouse Project Reviewer
    • JavaScript
    • Introducing ES2015
    • Objects and New Collection Types
    • Map

    3 Answers

  • cyber voyager
    cyber voyager
    8,859 Points

    What's the difference between set and add?

    Posted on Jun 16, 2017 by cyber voyager
    cyber voyager
    8,859 Points
    • JavaScript
    • Introducing ES2015
    • Objects and New Collection Types
    • Map

    2 Answers

  • cyber voyager
    cyber voyager
    8,859 Points

    Well, that's weird.

    Posted on Jun 16, 2017 by cyber voyager
    cyber voyager
    8,859 Points
    • JavaScript
    • Introducing ES2015
    • Objects and New Collection Types
    • Map

    2 Answers

  • cyber voyager
    cyber voyager
    8,859 Points

    The difference between arrays sets and objects?

    Posted on Jun 16, 2017 by cyber voyager
    cyber voyager
    8,859 Points
    • JavaScript
    • Introducing ES2015
    • Objects and New Collection Types
    • Set

    3 Answers

  • cyber voyager
    cyber voyager
    8,859 Points

    delete() related question.

    Posted on Jun 16, 2017 by cyber voyager
    cyber voyager
    8,859 Points
    • JavaScript
    • Introducing ES2015
    • Objects and New Collection Types
    • Set

    2 Answers

  • cyber voyager
    cyber voyager
    8,859 Points

    Difference between length and size?

    Posted on Jun 16, 2017 by cyber voyager
    cyber voyager
    8,859 Points
    • JavaScript
    • Introducing ES2015
    • Objects and New Collection Types
    • Set

    2 Answers

  • Kangin Choi
    Kangin Choi
    4,174 Points

    ` vs '

    Posted on Jun 16, 2017 by Kangin Choi
    Kangin Choi
    4,174 Points
    • JavaScript
    • Introducing ES2015
    • Objects and New Collection Types
    • Map

    1 Answer

  • cyber voyager
    cyber voyager
    8,859 Points

    What in the world is going on?!

    Posted on Jun 14, 2017 by cyber voyager
    cyber voyager
    8,859 Points
    • JavaScript
    • Introducing ES2015
    • Objects and New Collection Types
    • Map

    1 Answer

  • Sergi Oca
    Sergi Oca
    7,981 Points

    Is this an Object or a normal variable...?

    Posted on Jan 5, 2017 by Sergi Oca
    Sergi Oca
    7,981 Points
    • JavaScript
    • Introducing ES2015
    • Objects and New Collection Types
    • Set

    3 Answers

  • Harsh Khandelwal
    Harsh Khandelwal
    5,539 Points

    Why is the break keyword illegal statement error when I try to write break in the if condition of the forEach code?

    Posted on Sep 25, 2016 by Harsh Khandelwal
    Harsh Khandelwal
    5,539 Points
    • JavaScript
    • Introducing ES2015
    • Objects and New Collection Types
    • For...Of

    1 Answer

  • ac10
    ac10
    12,799 Points

    Why use Set at all?

    Posted on Sep 15, 2016 by ac10
    ac10
    12,799 Points
    • JavaScript
    • Introducing ES2015
    • Objects and New Collection Types
    • Set

    3 Answers

  • Brendan Whiting
    seal-mask
    .a{fill-rule:evenodd;}techdegree seal-36
    Brendan Whiting
    Front End Web Development Techdegree Graduate 84,738 Points

    Set() seems to not change at all when transpiled to old JavaScript

    Posted on Sep 7, 2016 by Brendan Whiting
    .a{fill-rule:evenodd;}techdegree seal-36
    Brendan Whiting
    Front End Web Development Techdegree Graduate 84,738 Points
    • JavaScript
    • Introducing ES2015
    • Objects and New Collection Types
    • Set

    2 Answers

  • Akshat Gupta
    Akshat Gupta
    1,438 Points

    what is the logical difference between a js object and js map as both are a collection of key value pairs?

    Posted on Aug 29, 2016 by Akshat Gupta
    Akshat Gupta
    1,438 Points
    • JavaScript
    • Introducing ES2015
    • Objects and New Collection Types
    • Map

    2 Answers

  • Daniel Vu
    Daniel Vu
    6,814 Points

    Aside for short circuiting a loop, could you tell me any additional use cases of using the "For...Of" loop?

    Posted on Aug 21, 2016 by Daniel Vu
    Daniel Vu
    6,814 Points
    • JavaScript
    • Introducing ES2015
    • Objects and New Collection Types
    • For...Of

    3 Answers

  • Tiger Wang
    Tiger Wang
    26,548 Points

    Is there any way that can keep the unique value in Set literally?

    Posted on Aug 15, 2016 by Tiger Wang
    Tiger Wang
    26,548 Points
    • JavaScript
    • Introducing ES2015
    • Objects and New Collection Types
    • Set

    2 Answers

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