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

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

New No-Code Track! 🚀start learning today!

🌟 Dreaming of a bright future? 🎓 Ask about the Treehouse Scholarship program! 🚀

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

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

  • Treehouse Logo
  • Plans
    Chevron
    • For Individuals
    • For Businesses
    • For Schools
    • For Libraries
    • For Military
  • Library
    Chevron
    • All Courses
    • Tracks
    • College Credit
  • Techdegree
    Chevron
    • Overview
    • Front End Development
    • Full Stack JavaScript
    • Data Analysis
    • UX Design
    • Python
  • Community
    Chevron
    • Code Adventures
    • Discord
    • Forum
    • Success Stories
    • Treehouse Links
    • 100 Days of Code
  • Resources
    Chevron
    • Career Toolbox
    • CodeForward
    • Free Treehouse Near Me
    • Jobs
    • Blog
    • Support
    • About
  • For Individuals For Businesses For Schools For Libraries For Military
  • All Courses Tracks College Credit
  • Overview Front End Web Development Full Stack JavaScript Python Development Data Analysis UX Design
  • Code Adventures Discord Forum Success Stories Treehouse Links 100 Days of Code
  • Career Toolbox CodeForward Free Treehouse Near Me Jobs Blog Support About
  • Sign In
  • Free Trial
Instagram Twitter Facebook YouTube LinkedIn
    • Newest
      • Newest
      • Active
      • Unanswered
      • Featured
    • All Topics
      • All Topics
      • • General Discussion
      • • AI
      • • Android
      • • 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
    • Showing results for:
    • JavaScript
    • jQuery Basics
    • Introducing jQuery
    • jQuery vs. JavaScript
    • Close
  • Alexander Hirdman
    Alexander Hirdman
    6,323 Points

    Jquery is not defined"

    Posted on Nov 22, 2021 by Alexander Hirdman
    Alexander Hirdman
    6,323 Points
    • JavaScript
    • jQuery Basics
    • Introducing jQuery
    • jQuery vs. JavaScript

    1 Answer

  • Jonathan Guerrero
    seal-mask
    .a{fill-rule:evenodd;}techdegree seal-36
    Jonathan Guerrero
    Front End Web Development Techdegree Graduate 18,245 Points

    Do we need to learn Jquery to finish the this Project?

    Posted on Mar 19, 2021 by Jonathan Guerrero
    .a{fill-rule:evenodd;}techdegree seal-36
    Jonathan Guerrero
    Front End Web Development Techdegree Graduate 18,245 Points
    • JavaScript
    • jQuery Basics
    • Introducing jQuery
    • jQuery vs. JavaScript

    0 Answers

  • Ashley Campbell
    seal-mask
    .a{fill-rule:evenodd;}techdegree seal-36
    Ashley Campbell
    Front End Web Development Techdegree Graduate 21,004 Points

    Why Doesn't This Work?

    Posted on Apr 21, 2020 by Ashley Campbell
    .a{fill-rule:evenodd;}techdegree seal-36
    Ashley Campbell
    Front End Web Development Techdegree Graduate 21,004 Points
    • JavaScript
    • jQuery Basics
    • Introducing jQuery
    • jQuery vs. JavaScript

    1 Answer

  • Vijayalaxmi vastrad
    Vijayalaxmi vastrad
    2,789 Points

    I try to use getElementByClassName to disappear Green box but it did not work can anyone pls tell me why?

    Posted on Sep 23, 2019 by Vijayalaxmi vastrad
    Vijayalaxmi vastrad
    2,789 Points
    • JavaScript
    • jQuery Basics
    • Introducing jQuery
    • jQuery vs. JavaScript

    2 Answers

  • Swan The Human
    seal-mask
    .a{fill-rule:evenodd;}techdegree
    Swan The Human
    Full Stack JavaScript Techdegree Student 19,338 Points

    how do you select and comment out a whole section like that?

    Posted on Aug 3, 2019 by Swan The Human
    .a{fill-rule:evenodd;}techdegree
    Swan The Human
    Full Stack JavaScript Techdegree Student 19,338 Points
    • JavaScript
    • jQuery Basics
    • Introducing jQuery
    • jQuery vs. JavaScript

    1 Answer

  • vamosrope14
    vamosrope14
    14,932 Points

    What's a callback function?

    Posted on Jun 8, 2019 by vamosrope14
    vamosrope14
    14,932 Points
    • JavaScript
    • jQuery Basics
    • Introducing jQuery
    • jQuery vs. JavaScript

    1 Answer

  • Saud Tauqeer
    PLUS
    Saud Tauqeer
    Courses Plus Student 8,099 Points

    Is using an arrow function okay?

    Posted on Jul 12, 2018 by Saud Tauqeer
    Saud Tauqeer
    Courses Plus Student 8,099 Points
    • JavaScript
    • jQuery Basics
    • Introducing jQuery
    • jQuery vs. JavaScript

    2 Answers

  • Mike Hatch
    Mike Hatch
    14,940 Points

    Code Not Executing + Chrome Console Error

    Posted on Mar 9, 2018 by Mike Hatch
    Mike Hatch
    14,940 Points
    • JavaScript
    • jQuery Basics
    • Introducing jQuery
    • jQuery vs. JavaScript

    8 Answers

  • Zoltán Levente Papp
    Zoltán Levente Papp
    3,045 Points

    I was following the teacher's activity in my workspace and none of them worked for me like in the video.Version?

    Posted on Jan 7, 2018 by Zoltán Levente Papp
    Zoltán Levente Papp
    3,045 Points
    • JavaScript
    • jQuery Basics
    • Introducing jQuery
    • jQuery vs. JavaScript

    3 Answers

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

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

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

  • Plans
  • Affiliates
  • Perks
  • Free Treehouse Near Me
  • Treehouse for Libraries
  • Treehouse for Businesses
  • Twitter
  • YouTube
  • Facebook
  • LinkedIn
  • Instagram
Terms & Conditions | Privacy

© 2025 Treehouse Island, Inc.