• Home
  • Free Trial
  • Sign In
  • Techdegree
  • Tracks
  • Library
  • Community
  • Support
  • Jobs
    • Newest
      • Newest
      • Active
      • Unanswered
      • Featured
    • All Topics
      • All Topics
      • • General Discussion
      • • 21st Century Skills
      • • Android
      • • APIs
      • • Business
      • • C#
      • • Computer Science
      • • CSS
      • • Data Analysis
      • • Databases
      • • Design
      • • Development Tools
      • • Digital Literacy
      • • Equity, Diversity, and Inclusion (EDI)
      • • Go
      • • HTML
      • • Java
      • • JavaScript
      • • Learning Resources
      • • Machine Learning
      • • PHP
      • • Python
      • • Quality Assurance
      • • Ruby
      • • Security
  • karan karan
    seal-mask
    .a{fill-rule:evenodd;}techdegree
    karan karan
    Web Development Techdegree Student 12,614 Points

    What will be scope of $1 (stored string in parentheses)

    Posted January 16, 2022 12:51am by karan karan
    .a{fill-rule:evenodd;}techdegree
    karan karan
    Web Development Techdegree Student 12,614 Points
    • JavaScript
    • Regular Expressions in JavaScript
    • Reformatting User Input
    • Using Replace with Captured Groups

    1 Answer

  • karan karan
    seal-mask
    .a{fill-rule:evenodd;}techdegree
    karan karan
    Web Development Techdegree Student 12,614 Points

    How /(\d*)(\d{2})/ this works

    Posted January 16, 2022 12:28am by karan karan
    .a{fill-rule:evenodd;}techdegree
    karan karan
    Web Development Techdegree Student 12,614 Points
    • JavaScript
    • Regular Expressions in JavaScript
    • Reformatting User Input
    • Using Replace with Captured Groups

    1 Answer

  • Mel Rojo
    seal-mask
    .a{fill-rule:evenodd;}techdegree
    Mel Rojo
    Full Stack JavaScript Techdegree Student 4,699 Points

    Not sure how to solve this challenge

    Posted August 16, 2021 9:29am by Mel Rojo
    .a{fill-rule:evenodd;}techdegree
    Mel Rojo
    Full Stack JavaScript Techdegree Student 4,699 Points
    • JavaScript
    • Regular Expressions in JavaScript
    • Reformatting User Input
    • Reformatting Text

    3 Answers

  • Muaaz Matwadia
    seal-mask
    .a{fill-rule:evenodd;}techdegree seal-36
    Muaaz Matwadia
    Full Stack JavaScript Techdegree Graduate 19,326 Points

    Regex replace

    Posted April 7, 2021 5:33pm by Muaaz Matwadia
    .a{fill-rule:evenodd;}techdegree seal-36
    Muaaz Matwadia
    Full Stack JavaScript Techdegree Graduate 19,326 Points
    • JavaScript
    • Regular Expressions in JavaScript
    • Reformatting User Input
    • Reformatting Text

    1 Answer

  • Dan Warren
    Dan Warren
    9,125 Points

    Regular Expressions in JavaScript Coding Challenge

    Posted August 5, 2020 7:57pm by Dan Warren
    Dan Warren
    9,125 Points
    • JavaScript
    • Regular Expressions in JavaScript
    • Reformatting User Input
    • Reformatting Text

    0 Answers

  • Begana Choi
    PLUS
    Begana Choi
    Courses Plus Student 13,124 Points

    why do we use /(\d*)(\d{2})/ instead of /(\d{2})(\d{2})/ in this video?

    Posted February 18, 2020 8:24am by Begana Choi
    Begana Choi
    Courses Plus Student 13,124 Points
    • JavaScript
    • Regular Expressions in JavaScript
    • Reformatting User Input
    • Using Replace with Captured Groups

    1 Answer

  • Haardik Gupta
    seal-mask
    .a{fill-rule:evenodd;}techdegree
    Haardik Gupta
    Full Stack JavaScript Techdegree Student 5,459 Points

    help replace

    Posted January 16, 2020 10:58am by Haardik Gupta
    .a{fill-rule:evenodd;}techdegree
    Haardik Gupta
    Full Stack JavaScript Techdegree Student 5,459 Points
    • JavaScript
    • Regular Expressions in JavaScript
    • Reformatting User Input
    • Reformatting Text

    1 Answer

  • <noob />
    <noob />
    17,047 Points

    understanding the reguler expression deeper from the video

    Posted January 7, 2020 9:32pm by <noob />
    <noob />
    17,047 Points
    • JavaScript
    • Regular Expressions in JavaScript
    • Reformatting User Input
    • A Better Telephone Number Validator

    1 Answer

  • John Nguyen
    seal-mask
    .a{fill-rule:evenodd;}techdegree seal-36
    John Nguyen
    Full Stack JavaScript Techdegree Graduate 30,464 Points

    \D allows for non-digit characters, meaning a-z would be allowed.

    Posted December 20, 2019 2:49pm by John Nguyen
    .a{fill-rule:evenodd;}techdegree seal-36
    John Nguyen
    Full Stack JavaScript Techdegree Graduate 30,464 Points
    • JavaScript
    • Regular Expressions in JavaScript
    • Reformatting User Input
    • A Better Telephone Number Validator

    1 Answer

  • Lanai Lewis
    Lanai Lewis
    10,400 Points

    I agree with the previously asked question. The regex in the video does not work in regexPal or in app.js

    Posted April 17, 2019 6:52pm by Lanai Lewis
    Lanai Lewis
    10,400 Points
    • JavaScript
    • Regular Expressions in JavaScript
    • Reformatting User Input
    • A Better Telephone Number Validator

    3 Answers

  • David Aguirre
    David Aguirre
    8,170 Points

    The regex used in the video is not working in any regex site.

    Posted March 17, 2019 2:21am by David Aguirre
    David Aguirre
    8,170 Points
    • JavaScript
    • Regular Expressions in JavaScript
    • Reformatting User Input
    • A Better Telephone Number Validator

    1 Answer

  • L Haney
    seal-mask
    .a{fill-rule:evenodd;}techdegree
    L Haney
    Front End Web Development Techdegree Student 10,263 Points

    Need help with Project #3 (Build an Interactive Form).

    Posted February 27, 2019 9:50pm by L Haney
    .a{fill-rule:evenodd;}techdegree
    L Haney
    Front End Web Development Techdegree Student 10,263 Points
    • JavaScript
    • Regular Expressions in JavaScript
    • Reformatting User Input
    • Reformatting a Telephone Number

    0 Answers

  • Wybe van den bosch
    Wybe van den bosch
    3,045 Points

    Stuck on this challenge? got your solution.

    Posted May 3, 2018 8:59am by Wybe van den bosch
    Wybe van den bosch
    3,045 Points
    • JavaScript
    • Regular Expressions in JavaScript
    • Reformatting User Input
    • Reformatting Text

    0 Answers

  • Shengyi Li
    Shengyi Li
    17,175 Points

    I use the preview get the right output. But system show wrong. I have no clue. const newText = '$2，$1';

    Posted September 7, 2017 3:17pm by Shengyi Li
    Shengyi Li
    17,175 Points
    • JavaScript
    • Regular Expressions in JavaScript
    • Reformatting User Input
    • Reformatting Text

    1 Answer

  • Brian Foley
    Brian Foley
    8,440 Points

    RegExp challenge question stuck

    Posted September 2, 2017 1:45pm by Brian Foley
    Brian Foley
    8,440 Points
    • JavaScript
    • Regular Expressions in JavaScript
    • Reformatting User Input
    • Reformatting Text

    5 Answers

  • Brian Foley
    Brian Foley
    8,440 Points

    reformatting won't reformat :(

    Posted September 2, 2017 1:29pm by Brian Foley
    Brian Foley
    8,440 Points
    • JavaScript
    • Regular Expressions in JavaScript
    • Reformatting User Input
    • Reformatting a Telephone Number

    1 Answer

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

    Treehouse

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

See Full Catalogue

Techdegree

  • Web Development
  • Front End Web Development
  • Full Stack JavaScript
  • Python Development
  • Data Analysis

Tracks

  • Learn to Code for Beginners
  • Beginning Python
  • Beginning SQL
  • Beginning Java
  • ...see more

Courses

  • JavaScript Basics
  • Intro to HTML & CSS
  • Python Basics
  • CSS Layout
  • ...see more

Explore

  • Perks
  • Treehouse for Libraries
  • Treehouse for Teams
  • Twitter
  • YouTube
  • Facebook
  • LinkedIn
  • Instagram
Terms & Conditions | Privacy

© 2022 Treehouse Island, Inc.