Skip to main content

🚀 In our NEW AI Bootcamp you'll build a working app in 28 days, no experience required. Free to all subscription levels.

✨ Earn college credits in Cybersecurity, JS, HTML, CSS and Python

Join the Treehouse affiliate program and earn 25% recurring commission! 🤑

  • Treehouse Logo
    • For Individuals
    • For Businesses
    • For Schools
    • For Libraries
    • For Military
    • All Courses
    • Tracks
    • AI Bootcamp
    • College Credit
    • Techdegree Bootcamps
    • Front End Development
    • Full Stack JavaScript
    • Code Adventures
    • Discord
    • Forum
    • Success Stories
    • Treehouse Links
    • 100 Days of Code
    • Explore
    • Career Toolbox
    • Free Treehouse Near Me
    • Affiliates
    • Blog
    • Support
    • About
    • Learn
    • Beginner's Guide to Coding
    • Data Analysis with SQL & Python
    • Front-End Web Development
    • Python Programming Basics
    • Techdegree Bootcamp Overview
    • UX Design Fundamentals
    • AI Tools for Beginners
  • For Individuals For Businesses For Schools For Libraries For Military
  • All Courses Tracks AI Bootcamp College Credit
  • Techdegree Bootcamps Front End Web Development Full Stack JavaScript
  • Code Adventures Discord Forum Success Stories Treehouse Links 100 Days of Code
  • Explore Career Toolbox Free Treehouse Near Me Affiliates Blog Support About
    Learn Beginner's Guide to Coding Data Analysis with SQL & Python Front-End Web Development Python Programming Basics Techdegree Bootcamp Overview UX Design Fundamentals AI Tools for Beginners
  • Sign In
  • Free Trial
Instagram Twitter Facebook YouTube LinkedIn
Loading banner... Start your free trial at Treehouse
    • Newest
      • Newest
      • Active
      • Unanswered
      • Featured
    • All Topics
      • All Topics
      • • General Discussion
      • • AI
      • • APIs
      • • Coding for Kids
      • • College Credit
      • • Computer Science
      • • CSS
      • • Data Analysis
      • • Databases
      • • Design
      • • Development Tools
      • • Digital Literacy
      • • Game Development
      • • Go Language
      • • HTML
      • • Java
      • • JavaScript
      • • Learning Resources
      • • Machine Learning
      • • No-Code
      • • PHP
      • • Professional Growth
      • • Python
      • • Quality Assurance
      • • React
      • • Ruby
      • • Security
      • • Swift
      • • Vibe Coding
  • fs5
    fs5
    3,809 Points

    What is the answer to question 4 of 5? const remove = (string.letter) => { let regex = new RegExp(letter, '

    Posted December 26, 2019 8:03pm by fs5
    fs5
    3,809 Points
    • JavaScript
    • Getting Started With ES2015
    • Create Functions Using Arrow Syntax
    • Review JavaScript Arrow Functions

    1 Answer

  • Maycey Davis
    Maycey Davis
    2,792 Points

    getting started with ES2015

    Posted November 4, 2019 1:36pm by Maycey Davis
    Maycey Davis
    2,792 Points
    • JavaScript
    • Getting Started With ES2015
    • Create Functions Using Arrow Syntax
    • Review JavaScript Arrow Functions

    3 Answers

  • Maycey Davis
    Maycey Davis
    2,792 Points

    o-

    Posted November 1, 2019 1:00pm by Maycey Davis
    Maycey Davis
    2,792 Points
    • JavaScript
    • Getting Started With ES2015
    • Create Functions Using Arrow Syntax
    • Review JavaScript Arrow Functions

    3 Answers

  • bhupendra rana
    PLUS
    bhupendra rana
    Courses Plus Student 5,610 Points

    Arrow Function

    Posted March 28, 2019 3:02pm by bhupendra rana
    bhupendra rana
    Courses Plus Student 5,610 Points
    • JavaScript
    • Getting Started With ES2015
    • Create Functions Using Arrow Syntax
    • Review JavaScript Arrow Functions

    1 Answer

  • Fernando Jimenez
    PLUS
    Fernando Jimenez
    Courses Plus Student 8,455 Points

    why is my answer wrong?

    Posted July 18, 2018 8:39pm by Fernando Jimenez
    Fernando Jimenez
    Courses Plus Student 8,455 Points
    • JavaScript
    • Getting Started With ES2015
    • Create Functions Using Arrow Syntax
    • Review JavaScript Arrow Functions

    1 Answer

  • Conner Mack
    Conner Mack
    7,309 Points

    need help on this question

    Posted May 7, 2018 5:46pm by Conner Mack
    Conner Mack
    7,309 Points
    • JavaScript
    • Getting Started With ES2015
    • Create Functions Using Arrow Syntax
    • Review JavaScript Arrow Functions

    10 Answers

  • Eric Gentry
    Eric Gentry
    6,197 Points

    Confused on the correct answer of this question.

    Posted April 23, 2018 5:48pm by Eric Gentry
    Eric Gentry
    6,197 Points
    • JavaScript
    • Getting Started With ES2015
    • Create Functions Using Arrow Syntax
    • Review JavaScript Arrow Functions

    2 Answers

  • Andrea Evolo
    Andrea Evolo
    7,496 Points

    How well is supported ES2015?

    Posted April 23, 2018 4:34pm by Andrea Evolo
    Andrea Evolo
    7,496 Points
    • JavaScript
    • Getting Started With ES2015
    • Create Functions Using Arrow Syntax
    • Review JavaScript Arrow Functions

    1 Answer

  • Sibin Lu
    Sibin Lu
    2,945 Points

    What answers should I fill in the blank for this question?

    Posted April 1, 2018 5:59pm by Sibin Lu
    Sibin Lu
    2,945 Points
    • JavaScript
    • Getting Started With ES2015
    • Create Functions Using Arrow Syntax
    • Review JavaScript Arrow Functions

    2 Answers

  • Aarica Hammond
    Aarica Hammond
    5,115 Points

    I Don't understand

    Posted March 1, 2018 3:10pm by Aarica Hammond
    Aarica Hammond
    5,115 Points
    • JavaScript
    • Getting Started With ES2015
    • Create Functions Using Arrow Syntax
    • Review JavaScript Arrow Functions

    1 Answer

  • Alvis Chen
    Alvis Chen
    4,548 Points

    arrow function

    Posted February 22, 2018 3:03am by Alvis Chen
    Alvis Chen
    4,548 Points
    • JavaScript
    • Getting Started With ES2015
    • Create Functions Using Arrow Syntax
    • Review JavaScript Arrow Functions

    1 Answer

Posting to the forum is only allowed for members with active accounts.
Please sign in or sign up to post.

Techdegree

  • Front End Web Development
  • Full Stack JavaScript
SEE ALL

Tracks

  • Learn to Code for Beginners
  • Beginning Python
  • Beginning SQL
  • Beginning Java
SEE ALL

Courses

  • JavaScript Basics
  • Intro to HTML & CSS
  • Python Basics
  • CSS Layout
SEE ALL

About Us

  • About
  • Blog
  • Community
  • Stories
  • Contact
  • Gift Card

Explore

  • Plans
  • Affiliates
  • Perks
  • Shop
  • Free Treehouse Near Me
  • Treehouse for Libraries
  • Treehouse for Businesses

Treehouse is an online technology education platform founded in 2011. Treehouse offers more than 700 self-paced, video-based courses in web development, programming, data analysis, design, and AI, plus two project-based bootcamp programs in Front End Web Development and Full Stack JavaScript. Individual Treehouse plans start at $25 per month and include a 7-day free trial. Treehouse serves individual learners, businesses, schools, and public libraries. Cardholders at participating U.S. public libraries can use Treehouse for free. Select Treehouse courses, offered with University Pathways International, are recommended for college credit by ACE and NCCRS. Treehouse learners earn digital certificates for completed Tracks.

Terms & Conditions · Privacy · © 2026 Treehouse Island, Inc.
  • Twitter
  • YouTube
  • Facebook
  • LinkedIn
  • Instagram
  • Discord