--- title: "MASUM ALAM (@masumdev) | Hashnode" description: "MASUM ALAM (@masumdev) writes on Hashnode. Read their latest articles and follow their work." url: "https://hashnode.com/@masumdev" --- @masumdev # MASUM ALAM @masumdev · Joined February 2025 ### [First To Know Come with GenAI](https://first-class-citizens.hashnode.dev/first-to-know-come-with-genai?utm_source=hashnode&utm_medium=feed) ChatGPT, ChaiCode, GenAI Learning, OpenAI 3 min read · [first-class-citizens.hashnode.dev](https://first-class-citizens.hashnode.dev/first-to-know-come-with-genai?utm_source=hashnode&utm_medium=feed) [Aug 16](https://hashnode.com/posts/first-to-know-come-with-genai/6a815d8952488705f235a2e6) ### [Polyfills In Javascript !](https://polyfills-masum-alam.hashnode.dev/polyfills-in-javascript?utm_source=hashnode&utm_medium=feed) JavaScript evolves, new features are added to the language to simplify development and improve performance. However, not all browsers—especially older ones—support these new features. What Is a Polyfill? A polyfill is a piece of JavaScript code that ... 2 min read · [polyfills-masum-alam.hashnode.dev](https://polyfills-masum-alam.hashnode.dev/polyfills-in-javascript?utm_source=hashnode&utm_medium=feed) [Aug 4, 2025](https://hashnode.com/posts/polyfills-in-javascript/6890dcc4fa7e0a3bc8679d75) ### [First Class Citizens In Javascript](https://first-class-citizens.hashnode.dev/first-class-citizens-in-javascript?utm_source=hashnode&utm_medium=feed) What is first class ciziten in javascript ? A function that can be stored by variable, passed argument to another functions and can be assigned. Types Of First Class Cizitens In Javascript ? Assigning a function to a variable const enjoy = () => { co... 2 min read · [first-class-citizens.hashnode.dev](https://first-class-citizens.hashnode.dev/first-class-citizens-in-javascript?utm_source=hashnode&utm_medium=feed) [Aug 1, 2025](https://hashnode.com/posts/first-class-citizens-in-javascript/688c252c4be09967b8d04c5d) ### [Array Method](https://masum-alam.hashnode.dev/array-method?utm_source=hashnode&utm_medium=feed) This is javascript method help to create fucntionality 3 min read · [masum-alam.hashnode.dev](https://masum-alam.hashnode.dev/array-method?utm_source=hashnode&utm_medium=feed) [Jul 20, 2025](https://hashnode.com/posts/array-method/687d1ae731c81b9870325bb1)