0x3d Site

Posted on Apr 7

10 Web Dev Tricks Even Senior Devs Miss!

#webdev #programming #javascript #tutorial

Take this as an GIFT 🎁: Build a Hyper-Simple Website and Charge $500+
And this: Launch Your First Downloadable in a Week (Without an Audience)

GET A 50% DISCOUNT—EXCLUSIVELY AVAILABLE HERE! It costs less than your daily coffee.

These Hidden Gems Will Level Up Your Skills Overnight

Think you know everything about web development? Think again. Most developers—yes, even the experienced ones—are missing out on simple but powerful tricks that can boost performance, cut bugs, and make your projects smoother than ever.

From overlooked JavaScript quirks to browser APIs and secret CSS powers, we’re diving into 10 web dev tricks that most devs have no idea exist. And if you want to keep learning cool stuff like this daily, check out javascript.0x3d.site—your new favorite corner of the internet for dev tools, hot topics, and must-know guides.

1. `:has()` in CSS – The Parent Selector is Real!

That mythical parent selector we’ve all been dreaming of? It’s here. Finally.

article:has(h1) {
  border: 2px solid lime;
}

Now you can style a parent based on its children! Say goodbye to JavaScript workarounds. Support is rolling out in modern browsers, so keep an eye out.

Get more cutting-edge CSS news at Trending Discussions.

2. The Web Share API – Native Sharing Without Plugins

Want users to share your blog post or product on social without clunky buttons?

navigator.share({
  title: 'Check this out!',
  url: window.location.href
});

Boom. That’s it. Works on most mobile browsers and makes your app feel native.

3. `AbortController` – Cancel Fetch Requests Like a Boss

Did you know you can cancel a fetch() request? Most devs don’t. Here’s the magic:

const controller = new AbortController();
fetch('/api/data', { signal: controller.signal });
// cancel it if needed
controller.abort();

No more memory leaks or stuck spinners. For more async mastery, check Developer Resources.

4. Use `prefers-color-scheme` for Smart Dark Mode

Let users decide if they want dark mode—automatically:

@media (prefers-color-scheme: dark) {
  body {
    background: #111;
    color: #eee;
  }
}

No JavaScript needed. Just clean CSS.

Turn $0 Research Papers into $297 Digital Products

🧠 Convert Research Papers into Business Tools The Ultimate Shortcut to Building Digital Products That Actually MatterMost people scroll past groundbreaking ideas every day and never realize it.They're hidden in research papers.Buried under academic jargon.Collecting digital dust on arXiv and Google Scholar.But if you can read between the lines —you can build something real.Something useful.Something valuable.This is not another fluffy eBook.This is a system to extract gold from research……and turn it into digital tools that sell.Here's what you get: ✅ Step-by-Step GuideLearn how to find high-impact papers and convert them into cheat sheets, prompt packs, and playbooks. ✅ Plug-and-Play ChecklistNo thinking required. Follow the steps, build your product, publish it. ✅ ChatGPT Prompt PackGet the exact prompts to decode complex research, turn insights into product formats, and even write your sales copy. ✅ Mindmap WorkflowA visual blueprint of the whole process. From idea to income — laid out like a circuit. Why this matters:Most people are drowning in low-quality content.You’re about to do the opposite.You're going to create signal — not noise.You’ll build products that are: Research-backed Fast to create High in perceived value And designed to help people win It’s a full loop: You learn → You create → Others win → You profit.What happens when you buy?You’ll feel it.The clarity.The power of execution.The momentum of turning raw knowledge into real-world value.You’re not buying a file.You’re buying a shortcut to products that earn, not just exist.If that excites you — let’s get started.No code. No waiting. Just results.👉 Grab your copy now.

0x7bshop.gumroad.com

5. HTTP Headers You Should Actually Care About

You know Content-Type, but have you met Permissions-Policy?

Permissions-Policy: geolocation=(), camera=()

This gives you better control over what your app can access, and it’s a security game-changer. More like this on Articles.

6. Custom Events – Talk Between Components Without Frameworks

Skip Redux or context-heavy logic. Native CustomEvents to the rescue:

const event = new CustomEvent('userLoggedIn', { detail: { id: 42 } });
window.dispatchEvent(event);

Then listen anywhere in your app. It’s modular magic.

7. The Clipboard API – Copy With Zero Flashy Hacks

Ditch the invisible textareas and .execCommand() tricks.

navigator.clipboard.writeText('Copied!')

Clean. Simple. And yes, it works in most modern browsers.

8. Intersection Observer – Better Than Scroll Events

Want to trigger something when an element comes into view (e.g., lazy load, animation)? Don't use scroll events—they're clunky.

const observer = new IntersectionObserver(callback);
observer.observe(document.querySelector('#myElement'));

Great for performance and UX.

9. Preload + Preconnect – Invisible Speed Boosts

Improve load time without changing your JS or CSS. Just add these in your <head>:

<link rel="preload" href="/styles.css" as="style">
<link rel="preconnect" href="https://fonts.googleapis.com">

Tiny additions, big gains.

10. `structuredClone()` – Finally, Deep Clone Without the JSON Hack

No more JSON.parse(JSON.stringify(obj)). That trick breaks on functions, Dates, etc.

Now it’s as simple as:

const deepCopy = structuredClone(originalObject);

Clean, native, and accurate. For deep dives like this, peek at Trending Repositories.

Final Thoughts: These Tricks Are Your Cheat Codes

The web platform has grown faster than most developers can keep up with. But the tricks above? They’re real, tested, and massively underused.

Bookmark javascript.0x3d.site to keep discovering new secrets like these—because sometimes it’s not about working harder, it’s about knowing the cheat codes.

Go ahead, impress your teammates. 🧠💻

🎁 Download Free Giveaway Products

We love sharing valuable resources with the community! Grab these free cheat sheets and level up your skills today. No strings attached — just pure knowledge! 🚀

🔗 More Free Giveaway Products Available Here

We've 15+ Products for FREE, just get it. We'll promise that you'll learn something out of each.

Build a Hyper-Simple Website for a Local Business and Charge $500+

Imagine this: You help a local business finally get online, transforming their visibility, and they happily pay you $500 or more for a website you built in just a few hours.You feel empowered.They feel grateful.It’s a win-win — and you don’t need to be an expert to make it happen.I’ve created a complete toolkit designed to remove every obstacle and hand you a simple, repeatable system to build websites, find clients, and get paid — fast.Here’s what you get:📘 1. The Local Digital Goldmine Guide (10 Pages of Pure Value) This step-by-step guide breaks down the entire process into simple, actionable steps: Why Local Businesses Need Simple Websites: Understand the massive opportunity in your local area. The No-Code Website Formula: Build a sleek, professional site in under 2 hours using free or low-cost tools. Finding & Pitching Clients Without Cold Calling: Use non-salesy strategies to attract clients, even if you hate selling. Pricing & Upselling for Recurring Income: Charge $500+ upfront, then stack passive income with hosting and maintenance upsells. You’ll finish this guide not just feeling motivated — but knowing exactly what to do next.✅ 2. Plug-and-Play Checklist (Stay Laser-Focused) Success is simple when you follow a proven process. This checklist is your roadmap: 📍 Pre-Launch Preparation: Research businesses, choose tools, and set up your payment system. 🔍 Client Outreach: Use personalized email scripts and follow-ups to land your first paying client. 🛠️ Website Build: Follow a structured flow to build and launch your client's site. 🤝 Client Management: Communicate like a pro, gather testimonials, and build lasting relationships. 💸 Pricing & Upsells: Lock in high-paying clients, then offer ongoing services for passive income. No overthinking. No confusion. Just tick the boxes, and watch your business grow.🔑 3. Handcrafted ChatGPT Prompts (Your AI-Powered Assistant) Why struggle to write client emails or site content when AI can do it for you? These prompts will save you hours: ✍️ Website Content: Generate compelling headlines, service descriptions, and "About Us" sections. 📧 Client Emails: Draft outreach, follow-ups, and pitch emails in seconds. 📈 SEO & Optimization: Find the best local keywords, write meta descriptions, and boost site rankings. 🎨 Design & Aesthetics: Get layout suggestions, color palette ideas, and font recommendations. 💰 Pricing & Upsells: Brainstorm service packages, pricing tiers, and irresistible upsell offers. You’ll feel like you have a full team behind you — even if you’re a one-person business.👉 This Isn’t Just a Product — It’s a Transformation You’re not just buying a bundle of files. You’re buying: 🔓 Clarity: Know exactly what to do, step by step. ⚡ Speed: Build and launch sites faster than you thought possible. 🧠 Confidence: Feel equipped to approach clients and charge what you're worth. 📈 Freedom: Create a flexible, low-stress income stream from anywhere. Think about it: There are thousands of local businesses that desperately need a website.With this toolkit, you can be the person who delivers that solution — and gets paid handsomely for it.It’s not a question of whether you can do this. The question is: How soon do you want to start?🚀 One decision. One small investment. Infinite potential. Let’s build something incredible.

0x7bshop.gumroad.com

Making extra income by selling websites has never been easier—AI does most of the work for you!

No need to spend hours researching or figuring things out on your own. This step-by-step blueprint gives you everything you need:

✔️ A complete guide that walks you through the process
✔️ Detailed checklists so you don’t miss a thing
✔️ Pre-made ChatGPT prompts to make website creation effortless

It’s all laid out for you—just follow the steps and start earning! 🚀

Available on Gumroad - Instant Download - 50% OFFER 🎉

Top comments (6)

Ndeye Fatou Diop • Apr 8

Loved these tips! I didn’t know about the share one

Rasheed Bustamam • Apr 9

Great article! Even after 10 years of web dev I'm still learning new things!

Bought your books and read them, thanks for being a great resource.

Besworks • Apr 8 • Edited

Very good tips in here. More devs should know about these features. I'm using most of them already but I did learn a couple new things: structuredClone and Permissions-Policy are news to me. 👍🏼