Web Scraping Made Simple

Sign Up for BrightData Free Trial: https://get.brightdata.com/wbscraper GitHub Repo (Follow Me!) https://github.com/pkellz/indeed-bright-data-scraper MongoDB Compass https://www.mongodb.com/products/tools/compass ngrok https://ngrok.com/download 🌎 Find Me Here: Twitter:...

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Batch Processing Large Arrays using Generators

If you need to process very large collections of data, instead of processing each item sequentially you could process the items in batches/chunks. In this video, we create a handy generator helper function that can chunk collections of arbitrary length. 🌎 Find Me Here:...

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JSON Web Tokens (JWT) Explained in 15 Minutes

JSON Web Token is either a) the standard that defines a URL-safe way to pass claims between 2 parties or b) the token string that contains the claim data. 📚 Materials/References: More information about JWT: https://jwt.io/introduction 🌎 Find Me Here: Twitter:...

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Recreating 'Pick' in TypeScript #javascript #coding #programming #typescript

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JavaScript Dark Magic

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Building an Unblockable Web Scraper with Proxies! | Node.js

🟢 Click here to create your OxyLabs account! https://oxylabs.go2cloud.org/aff_c?offer_id=7&aff_id=824&url_id=14 🟢 Click here for the 'tsconfig.json'! https://github.com/pkellz/lead-scraper/blob/master/tsconfig.json ❗Also, I forgot to demonstrate how to set a custom page limit...

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Build an eCommerce Web Scraper with Node.js! (MERN)

🟢 Click here to create your BrightData account https://brightdata.grsm.io/devsage 🌟GitHub Code The front-end React.js repo: https://github.com/pkellz/bright-data The backend Node.js/Express repo: https://github.com/pkellz/bright-data-server

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Build React.js From Scratch | Course Preview

🌟 Order Here! https://buildreactjs.io 👨‍💻 GitHub Starter Code! https://github.com/pkellz/sage-starter ⏰ Timestamps 0:00 - Intro 3:02 - Download starter code from GitHub 3:50 - Explore project structure 4:48 - Deconstructing JSX and React.createElement() 9:31 - Deconstructing...

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JavaScript Debouncing Explained Simply

Debouncing is the process of preventing an event handler from triggering ("bouncing") too many times in a particular time window. 📚 Materials/References: Github: https://github.com/pkellz/devsage/tree/master/Debouncing 🌎 Find Me Here: Twitter: https://twitter.com/realDevSage...

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JavaScript Design Patterns #10 - Builder Pattern

The builder design pattern is a creational pattern that enables you to construct complex objects simply and more declaratively. 📚 Materials/References: "Design Patterns Explained Simply" Ebook: https://payhip.com/b/MLtJ 🌎 Find Me Here: Twitter: https://twitter.com/realDevSage...

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JavaScript Closures Explained Simply

📚Materials/References: MDN Web Docs: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Closures 🌎 Find Me Here: Twitter: https://twitter.com/realDevSage Discord: https://discord.gg/BP8wPv6raA Ebooks: https://payhip.com/devsage Merch: https://cottonbureau.com/people/devsage

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JavaScript Form Validation Tutorial

Form validation is the process of ensuring that the data a user submits through a form is in the correct format and within the constraints set by the application. If the user enters data that is incorrect or missing, the form validation logic can prevent the form submission...

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JavaScript this Keyword Explained Simply

In most cases, the value of 'this' is determined by how a function is called. 'this' usually refers to the object that is calling the current function. If a function, foo(), is called from the global scope ("foo()"), then 'this' will refer to the global object - the Window...

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Javascript Let & Const Explained Simply

'let' and 'const' are JavaScript keywords that were introduced in ES6 that allow you to declare variables that are limited to the scope of a block statement. The 'var' keyword, on the other hand, declares a variable globally or locally to an entire function. let and const are...

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Javascript Array reduce Explained

The reduce method executes a user-supplied "reducer" callback function on each element of an array, in order, passing in the return value from the calculation on the previous element. The final result of running the reducer across all elements of the array is a single value....

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