--- title: "Nisha Sen (@nishasen) | Hashnode" description: "Frontend Developer. Read the latest articles by Nisha Sen on Hashnode." url: "https://hashnode.com/@nishasen" --- @nishasen # Nisha Sen @nishasen · Joined June 2022 Frontend Developer ### [Promises in JavaScript and its methods](https://nishasen.hashnode.dev/promises-in-javascript-and-its-methods?utm_source=hashnode&utm_medium=feed) A promise is a JavaScript object that represents the eventual completion of an asynchronous operation and resulting value that it returns. Promise lets the asynchronous operation return a value not as the same point but sometime later in future. It c... 3 min read · [nishasen.hashnode.dev](https://nishasen.hashnode.dev/promises-in-javascript-and-its-methods?utm_source=hashnode&utm_medium=feed) [Jun 4, 2022](https://hashnode.com/posts/promises-in-javascript-and-its-methods/629b76147ab2e32eed5b957f) ### [Global Execution Context in JavaScript](https://nishasen.hashnode.dev/global-execution-context-in-javascript?utm_source=hashnode&utm_medium=feed) JavaScript is one of the most interesting language one can come across. It is one of the most hated and also one of the most loved languages of the world. It is so because though people find it difficult to understand, it is also very interesting. In... 4 min read · [nishasen.hashnode.dev](https://nishasen.hashnode.dev/global-execution-context-in-javascript?utm_source=hashnode&utm_medium=feed) [1](https://hashnode.com/posts/global-execution-context-in-javascript/629b16d4a414e02d6a7014d3) [Jun 4, 2022](https://hashnode.com/posts/global-execution-context-in-javascript/629b16d4a414e02d6a7014d3) ### [Nullish coalescing operator (??)](https://nishasen.hashnode.dev/nullish-coalescing-operator?utm_source=hashnode&utm_medium=feed) Hey everyone, While learning about JavaScript I came across a very cool feature in it. It’s called Nullish Coalescing operator. Does the term look so difficult, I felt that too while I came across it. I felt like this might be a very difficult concep... 3 min read · [nishasen.hashnode.dev](https://nishasen.hashnode.dev/nullish-coalescing-operator?utm_source=hashnode&utm_medium=feed) [Jun 4, 2022](https://hashnode.com/posts/nullish-coalescing-operator/629b1342a414e02d6a701488)