✨ 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
    • JavaScript and the DOM
    • Making Changes to the DOM
    • Set Inline Styles with the style Property
    • Close
  • Katarzyna Wójtowicz
    PLUS
    Katarzyna Wójtowicz
    Courses Plus Student 4,842 Points

    Cannot read properties of null (reading 'addEventListener')

    Posted on May 25, 2023 by Katarzyna Wójtowicz
    Katarzyna Wójtowicz
    Courses Plus Student 4,842 Points
    • JavaScript
    • JavaScript and the DOM
    • Making Changes to the DOM
    • Set Inline Styles with the style Property

    2 Answers

  • Golas Makefs
    seal-mask
    .a{fill-rule:evenodd;}techdegree
    Golas Makefs
    Full Stack JavaScript Techdegree Student 285 Points

    word "none"

    Posted on Jan 17, 2023 by Golas Makefs
    .a{fill-rule:evenodd;}techdegree
    Golas Makefs
    Full Stack JavaScript Techdegree Student 285 Points
    • JavaScript
    • JavaScript and the DOM
    • Making Changes to the DOM
    • Set Inline Styles with the style Property

    1 Answer

  • Siam Hossain
    seal-mask
    .a{fill-rule:evenodd;}techdegree
    Siam Hossain
    Full Stack JavaScript Techdegree Student 4,615 Points

    unclear explaining

    Posted on Aug 21, 2022 by Siam Hossain
    .a{fill-rule:evenodd;}techdegree
    Siam Hossain
    Full Stack JavaScript Techdegree Student 4,615 Points
    • JavaScript
    • JavaScript and the DOM
    • Making Changes to the DOM
    • Set Inline Styles with the style Property

    3 Answers

  • ilia kolbas
    ilia kolbas
    824 Points

    why .document.getElementsByClassName(' ') instead of document.querySelector('. ') doesnt work? console shows a mistake

    Posted on Aug 4, 2022 by ilia kolbas
    ilia kolbas
    824 Points
    • JavaScript
    • JavaScript and the DOM
    • Making Changes to the DOM
    • Set Inline Styles with the style Property

    1 Answer

  • Joshua Munoz
    PLUS
    Joshua Munoz
    Courses Plus Student 7,794 Points

    Issue: Set Inline Styles with the style Property (JavaScript and the DOM)

    Posted on Jun 27, 2022 by Joshua Munoz
    Joshua Munoz
    Courses Plus Student 7,794 Points
    • JavaScript
    • JavaScript and the DOM
    • Making Changes to the DOM
    • Set Inline Styles with the style Property

    1 Answer

  • Jesse Gonzalez
    Jesse Gonzalez
    7,322 Points

    Set Inline Styles with the style Property

    Posted on Nov 23, 2021 by Jesse Gonzalez
    Jesse Gonzalez
    7,322 Points
    • JavaScript
    • JavaScript and the DOM
    • Making Changes to the DOM
    • Set Inline Styles with the style Property

    2 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.