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﹃Lydia Hallie — DEV Community Profile﹄

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✋🏼🔥 CS Visualized: CORS

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dev.to/lydiahallie It’s every developer’s frustration once in a while to see that big red Access to fetched has been blocked by CORS policy error in your console! 😬 Although there are some ways to quickly get rid of this error, let’s not take anything for granted today! Instead, let’s see what CORS is actually doing, and why it’s actually our friend 👏🏼 ❗️ In this blog post I won’t explain HTTP basics. In case you ● テクノロジー ●2020/08/04 18:23 ●あとで読む

⭐️🎀 JavaScript Visualized: Promises & Async/Await

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dev.to/lydiahallie If you're already somewhat familiar with promises, here are some shortcuts to save you some precious scrolling time. Introduction When writing JavaScript, we often have to deal with tasks that rely on other tasks! Let's say that we want to get an image, compress it, apply a filter, and save it 📸 The very first thing we need to do, is get the image that we want to edit. A getImage function can tak ● テクノロジー ●2020/04/15 06:52 ●javascript ●Promise ●async ●*JavaScript ●あとで読む ●dev ●function ●community ●image

🌳🚀 CS Visualized: Useful Git Commands

82users

dev.to/lydiahallie Although Git is a very powerful tool, I think most people would agree when I say it can also be... a total nightmare 😐 I've always found it very useful to visualize in my head what's happening when working with Git: how are the branches interacting when I perform a certain command, and how will it affect the history? Why did my coworker cry when I did a hard reset on master, force pushed to origi ● テクノロジー ●2020/04/03 07:57 ●git ●あとで読む ●プログラミング ●webサービス ●tips

⚡️⛓JavaScript Visualized: Scope (Chain)

4users

dev.to/lydiahallie Time for the scope chain 🕺🏼 In this post I assume you know the basics of execution contexts: I’ll soon write a post on that too though 😃 Let's take a look at the following code: const name = "Lydia" const age = 21 const city = "San Francisco" function getPersonInfo() { const name = "Sarah" const age = 22 return `${name} is ${age} and lives in ${city}` } console.log(getPersonInfo()) We're invoki ● テクノロジー ●2020/01/28 14:43 ●あとで読む

💡🎁 JavaScript Visualized: Generators and Iterators

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dev.to/lydiahallie ES6 introduced something cool called generator functions 🎉 Whenever I ask people about generator functions, the responses are basically: "I've seem them once, got confused, never looked at it again", "oh gosh no I've read so many blog posts about generator functions and I still don't get them", "I get them but why would anyone ever use that" 🤔 Or maybe that's just the conversations I've been hav ● テクノロジー ●2020/01/27 23:07 ●JavaScript ●article

🎉👨‍👩‍👧‍👧 JavaScript Visualized: Prototypal Inheritance

7users

dev.to/lydiahallie Ever wondered why we can use built-in methods such as .length, .split(), .join() on our strings, arrays, or objects? We never explicitly specified them, where do they come from? Now don't say "It's JavaScript lol no one knows, it's magic 🧚🏻‍♂️", it's actually because of something called prototypal inheritance. It's pretty awesome, and you use it more often than you realize! We often have to crea ● テクノロジー ●2020/01/04 17:36 ●JavaScript

🚀⚙️ JavaScript Visualized: the JavaScript Engine

623 users

dev.to/lydiahallie JavaScript is cool (don't @ me), but how can a machine actually understand the code you've written? As JavaScript devs, we usually don't have to deal with compilers ourselves. However, it's definitely good to know the basics of the JavaScript engine and see how it handles our human-friendly JS code, and turns it into something machines understand! 🥳 | Note: This post is mainly based on the V8 eng ● テクノロジー ●2019/12/13 21:46 ●javascript ●あとで読む ●プログレッシブウェブ ●Node.js ●visualization ●あとでじっくり ●techfeed ●dev ●programming

✨♻️ JavaScript Visualized: Event Loop

31users

dev.to/lydiahallie If you're here in 2024 (or later), here's an updated blog post!](https://lydiahallie.com/blog/event-loop) Oh boi the event loop. It’s one of those things that every JavaScript developer has to deal with in one way or another, but it can be a bit confusing to understand at first. I’m a visual learner so I thought I’d try to help you by explaining it in a visual way through low-res gifs because it's ● テクノロジー ●2019/11/26 01:06 ●javascript ●プログラミング ●あとで読む ●*あとで読む

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