--- title: "#101 articles | Hashnode" description: "Explore 7 articles tagged #101 on Hashnode. Tutorials, guides, and how-tos from the community." url: "https://hashnode.com/tag/101" --- Tag # #101 7 posts · 1 followers [Jemin Desai](https://hashnode.com/@JEMIN7) · [Mar 15](https://hashnode.com/posts/javascript-arrays-101/69b690d3f4eb2f8b045a3963) ### [JavaScript Arrays 101](https://jemin001.hashnode.dev/javascript-arrays-101?utm_source=hashnode&utm_medium=feed) An array is the simplest way to store a list of things — fruits, scores, names, tasks. One variable. Any number of values. Zero confusion. What is an array?One variable, many values Imagine you want t 4 min read · [jemin001.hashnode.dev](https://jemin001.hashnode.dev/javascript-arrays-101?utm_source=hashnode&utm_medium=feed) [Kanishka Shashi](https://hashnode.com/@Kshashi22) · [Mar 8](https://hashnode.com/posts/javascript-arrays-101/69ad2fa586766ac3a6155385) ### [JavaScript Arrays 101](https://javasblog.hashnode.dev/javascript-arrays-101?utm_source=hashnode&utm_medium=feed) When we start learning programming, we often store information in variables. But what happens when we need to store multiple related values? Writing many variables quickly becomes messy. This is where 4 min read · [javasblog.hashnode.dev](https://javasblog.hashnode.dev/javascript-arrays-101?utm_source=hashnode&utm_medium=feed) [Harsh Prajapati](https://hashnode.com/@harsh7il) · [Jan 30](https://hashnode.com/posts/css-selectors-101-targeting-elements-with-precision/697cacd47c50fcee9b6e08a6) ### [CSS Selectors 101: Targeting Elements with Precision](https://harsh7il.hashnode.dev/css-selectors-101-targeting-elements-with-precision?utm_source=hashnode&utm_medium=feed) 1\. Why CSS selectors are needed CSS selectors answer one simple question: Without selectors, CSS wouldn’t know where to apply styles.Selectors let you: Target specific elements Style multiple elements at once Avoid repeating the same CSS again and... 2 min read · [harsh7il.hashnode.dev](https://harsh7il.hashnode.dev/css-selectors-101-targeting-elements-with-precision?utm_source=hashnode&utm_medium=feed) [Adam Poulemanos](https://hashnode.com/@knitli-adam) · [Sep 26, 2025](https://hashnode.com/posts/context-and-context-windows-what-you-need-to-know/68d6ce15969dda0d24d0f37f) ### [Context and Context Windows: What You Need to Know](https://knitli.hashnode.dev/context-and-context-windows-what-you-need-to-know?utm_source=hashnode&utm_medium=feed) How AI Thinks: The Goldfish Model of Context 5 min read · [knitli.hashnode.dev](https://knitli.hashnode.dev/context-and-context-windows-what-you-need-to-know?utm_source=hashnode&utm_medium=feed) [Adam Poulemanos](https://hashnode.com/@knitli-adam) · [Sep 18, 2025](https://hashnode.com/posts/understanding-tokens-what-they-are-and-why-theyre-important/68d5d9d219d33409d58ed5c7) ### [Understanding Tokens: What They Are and Why They're Important](https://knitli.hashnode.dev/understanding-tokens-what-they-are-and-why-theyre-important?utm_source=hashnode&utm_medium=feed) An intro to tokens and the hidden economics of AI 3 min read · [knitli.hashnode.dev](https://knitli.hashnode.dev/understanding-tokens-what-they-are-and-why-theyre-important?utm_source=hashnode&utm_medium=feed) [Mitali Garg](https://hashnode.com/@MitaliGarg) · [Sep 17, 2023](https://hashnode.com/posts/machine-learning-101/65074c779a12fcdbc428d71e) ### [Machine Learning 101](https://mitali.hashnode.dev/machine-learning-101?utm_source=hashnode&utm_medium=feed) Back to basics! 4 min read · [mitali.hashnode.dev](https://mitali.hashnode.dev/machine-learning-101?utm_source=hashnode&utm_medium=feed) [Arjun Adhikari](https://hashnode.com/@theArjun) · [Mar 19, 2023](https://hashnode.com/posts/git-101/641df84b335ed43a9f2bd02c) ### [Git 101](https://arjun.name.np/git-101?utm_source=hashnode&utm_medium=feed) Can we relate? As familiar as Microsoft Office, Dropbox, and Facebook are to us, they have become part of our everyday lives. Let’s use those as references: Do you know that button in Microsoft Word that says “Edit, Undo”? Git does that but for every... 3 min read · [arjun.name.np](https://arjun.name.np/git-101?utm_source=hashnode&utm_medium=feed)