Newline produces effective courses for aspiring lead developers
Explore wide variety of content to fit your specific needs
article
NEW RELEASE
Pro
Beat the AI Filter: How to Get your CV seen by Recruiters in the AI Age
It’s undeniable that AI has - for better or worse - already had a huge impact on the software industry, from its practical applications at the technology level, to the changing demand from skills and experience, to the layoffs linked to AI processes taking over. One area we haven’t really talked about in our articles yet is recruitment: it’s no secret that AI is being used to scan CVs and automatically filter candidates. Several of my developer friends have been talking about this recently, and with a slew of layoffs in tech sending a lot of IT folks on the hunt for new jobs, I thought this would be the perfect time to dive into how AI is being used to filter candidates, and what you can do to stand out and get past the filters. Forbes estimates that 65% of employers will use AI tools to reject candidates in 2025. That’s a staggeringly high number, but for folks who work in hiring or are currently job hunting it’s not a surprising one. The article offers a further breakdown of how employers plan to use–or are already using–AI in their hiring process.
article
NEW RELEASE
Pro

Creating a Slack Bot with Replit Assistant and Bolt (Part I)
Learn how to prompt Replit Assistant, an advanced AI-coding assistant, to create your first Slack bot with Bolt, a framework for building Slack apps with Python (or JavaScript). Part I covers forking a Slack bot project template, the anatomy of a basic Slack bot, personalization of Replit Assistant, and prompting techniques for Replit Assistant.
article
NEW RELEASE
Pro

Creating a Discord Bot with Replit Agent and discord.js
Learn how to create your first Discord bot with Replit Agent, an advanced AI-coding agent, and discord.js, a Node.js-based Discord API library. This step-by-step guide teaches you how to go from an initial idea to a 24/7 Discord bot in minutes, regardless of skill level.
article
NEW RELEASE
Pro

How To Deploy Your Web App With Netlify
Welcome! This is the sixth and final lesson on how to build fullstack apps with Bolt and Supabase If you’re just joining, you’re in luck, ‘cause we already have tons of content for you to enjoy while turning your app from just an idea to deployed web application in just an afternoon. Before you dive into this lesson, here’s where you can find Part 1 , Part 2 , Part 3 , Part 4 , and Part 5 if you want to get up to speed (which you probably do, otherwise, what exactly are you going to deploy? 🤔)
article
NEW RELEASE
Pro

What is LLM as Judge and Why Should you use it?
In the last article we covered statistical metrics like Perplexity, BLEU, ROUGE and more, as well as some of the statistical concepts that underpin them, their strengths (accuracy, reliability) and weaknesses (no subjective focus, use of reference texts. Between human evaluation (manual testing) and statistical measures we get a mix of high-value qualitative assessment on a small part of the test surface, and a rigorous but limited view on a wider area. That still leaves a lot of middle ground uncovered! That’s why there’s been a push the last few years to get coverage for the space between - something that has a level of subjectivity and nuance but that also scales up. This is where LLM-as-a-Judge comes in. In our manual testing for LLMs article I compared this to a kind of ouroboros where AI validates AI - and rightly so, that isn’t necessarily a bad thing. LLMs are able to do some things better than humans and LLM-as-a-Judge plays to those strengths - but it does not replace the need for human oversight and statistical assessment. There’s also metrics that combine LLM-as-a-Judge with statistical metrics - but we’ll talk more about that later.
course
Workshop

Fundamentals of transformers - Live Workshop
Everyone knows chatgpt, but how do modern large language models fully work? The fundamentals start at the transformer. This workshop is a workshop to dymstify the transformer and be able to run through concept to code on how the transformer work. This workshops combines concept at an intutive level, to code, to math all with the intent at providing an end to end understanding at the fundamentals of large language models.
course
Pro

Scaling Web App Configuration with Environment Variables
<!-- Your template is like this (markdown): --> Learn the strategies senior engineers use to configure their projects to run securely, anywhere with environment variables. <!-- ( the summary is short - one or two lines ) -->
course
Pro

Responsive LLM Applications with Server-Sent Events
Large Language Models are reshaping industries, yet integrating them into real-time streaming UIs presents unique challenges. In this course we will learn how to seamlessly integrate LLM APIs into applications and build AI-powered streaming text and chat UIs with TypeScript, React, and Python. Step-by-step, we will build a full-stack AI application with quality code and very flexible implementation. The LLM application in this course includes: - Completion Use-Case (english to emojis) - Chat - Retrieval Augmented Generation use-case - AI Agent Use-Cases (code execution, data-Analyste agent) This app can be used as a starting point in most projects, saving a huge amount of time, and its flexibilty allows new tools to be added as needed. At the end of this course, you will have mastered end-to-end implementation of a flexible and high-quality LLM application. This course will also equip you with the knowledge and skills necessary to create sophisticated LLM solutions of your own.
course
Pro

React Data Fetching: Beyond the Basics
This course will teach you how to fetch in a performant way for React without relying on a third-party library or the useEffect hook. We will build a custom data fetching library from scratch that will prefetch, cache, and address all the common issues with fetching data.
book
Pro

Fullstack React with TypeScript
Learn Pro Patterns for Hooks, Testing, Redux, SSR, and GraphQL
book
Pro

Security from Zero
Practical Security for Busy People
book
Pro

JavaScript Algorithms
Learn Data Structures and Algorithms in JavaScript
book
Pro

How to Become a Web Developer: A Field Guide
A Field Guide to Your New Career
book
Pro

Fullstack D3 and Data Visualization
The Complete Guide to Developing Data Visualizations with D3
EXPLORE RECENT TITLES BY NEWLINE
Expand your skills with in-depth, modern web development training
Our students work at
Stop living in tutorial hell
Binge-watching hundreds of clickbait-y tutorials on YouTube. Reading hundreds of low-effort blog posts. You're learning a lot, but you're also struggling to apply what you've learned to your work and projects. Worst of all, uncertainty looms over the next phase of your career.
How do I climb the career engineering ladder?
How do I continue moving toward technical excellence?
How do I move from entry-level developer to senior/lead developer?
Learn from senior engineers who've been in your position before.
Taught by senior engineers at companies like Google and Apple, newline courses are hyper-focused, project-based tutorials that teach students how to build production-grade, real- world applications with industry best practices!
newline courses cover popular libraries and frameworks like React, Vue, Angular, D3.js and more!
With over 500+ hours of video content across all newline courses, and new courses being released every month, you will always find yourself mastering a new library, framework or tool.
At the low cost of $40 per month, the newline Pro subscription gives you unlimited access to all newline courses and books, including early access to all future content. Go from zero to hero today! 🚀
Level up with the newline pro subscription
Ready to take your career to the next stage?
newline pro subscription
- Unlimited access to 60+ newline Books, Guides and Courses
- Interactive, Live Project Demos for every newline Book, Guide and Course
- Complete Project Source Code for every newline Book, Guide and Course
- 20% Discount on every newline Masterclass Course
- Discord Community Access
- Full Transcripts with Code Snippets
Explore newline courses
Explore our courses and find the one that fits your needs. We have a wide range of courses from beginner to advanced level.
Explore newline books
Explore our books and find the one that fits your needs.
Newline fits learning into any schedule
Your time is precious. Regardless of how busy your schedule is, newline authors produce high-quality content across multiple mediums to make learning a regular part of your life.
Have a long commute or trip without any reliable internet connection options?
Download one of the 15+ books. Available in PDF/EPUB/MOBI formats for accessibility on any device
Have time to sit down at your desk with a cup of tea?
Watch over 500+ hours of video content across all newline courses
Only have 30 minutes over a lunch break?
Explore 1-minute shorts and dive into 3-5 minute videos, each focusing on individual concepts for a compact learning experience.
In fact, you can customize your learning experience as you see fit in the newline student dashboard:
Building a Beeswarm Chart with Svelte and D3
Connor RothschildGo To Course →Hovering over elements behind a tooltip
Connor explains how setting the CSS property pointer-events
to none
allows users to hover over elements behind a tooltip in SVG data visualizations.
newline content is produced with editors
Providing practical programming insights & succinctly edited videos
All aimed at delivering a seamless learning experience

Find out why 100,000+ developers love newline
See what students have to say about newline books and courses
José Pablo Ortiz Lack
Full Stack Software Engineer at Pack & Pack
I got a job offer, thanks in a big part to your teaching. They sent a test as part of the interview process, and this was a huge help to implement my own Node server.
This has been a really good investment!
Meet the newline authors
newline authors possess a wealth of industry knowledge and an infinite passion for sharing their knowledge with others. newline authors explain complex concepts with practical, real-world examples to help students understand how to apply these concepts in their work and projects.
Level up with the newline pro subscription
Ready to take your career to the next stage?
newline pro subscription
- Unlimited access to 60+ newline Books, Guides and Courses
- Interactive, Live Project Demos for every newline Book, Guide and Course
- Complete Project Source Code for every newline Book, Guide and Course
- 20% Discount on every newline Masterclass Course
- Discord Community Access
- Full Transcripts with Code Snippets
LOOKING TO TURN YOUR EXPERTISE INTO EDUCATIONAL CONTENT?
At newline, we're always eager to collaborate with driven individuals like you, whether you come with years of industry experience, or you've been sharing your tech passion through YouTube, Codepens, or Medium articles.
We're here not just to host your course, but to foster your growth as a recognized and respected published instructor in the community. We'll help you articulate your thoughts clearly, provide valuable content feedback and suggestions, all towards publishing a course students will value.
At newline, you can focus on what matters most - sharing your expertise. We'll handle emails, marketing, and customer support for your course, so you can focus on creating amazing content
newline offers various platforms to engage with a diverse global audience, amplifying your voice and name in the community.
From outlining your first lesson to launching the complete course, we're with you every step of the way, guiding you through the course production process.
In just a few months, you could not only jumpstart numerous careers and generate a consistent passive income with your course, but also solidify your reputation as a respected instructor within the community.
Comments (3)
Nice tip! Will try this out.
Worked like a charm, thanks!
Interesting technique, Connor. I've been grappling with tooltip issues in my D3 visualizations. Would this approach work smoothly with event listeners attached to those background elements?