--- title: "MANOHAR KUMAR (@manohar247) | Hashnode" description: "Senior Frontend Engineer. Read the latest articles by MANOHAR KUMAR on Hashnode." url: "https://hashnode.com/@manohar247" --- @manohar247 # MANOHAR KUMAR @manohar247 · India · Joined August 2023 Senior Frontend Engineer [Website](https://manoharkumarsingh.github.io/myportfolio/) ### [Async vs Differ in js](https://webtechinterview.blogspot.com//async-vs-differ-in-js?utm_source=hashnode&utm_medium=feed) Misconception about the Script tag Most people assume that the script tag should come before the closing body tag, as shown below: This assumption is due to how the browser parses (loads) HTML. However, you can place the script tag anywhere within th... 2 min read · [webtechinterview.blogspot.com](https://webtechinterview.blogspot.com//async-vs-differ-in-js?utm_source=hashnode&utm_medium=feed) [Aug 8, 2023](https://hashnode.com/posts/async-vs-differ-in-js/64d1d5ca446a8b6e572e4180) ### [Closure in Javascript](https://webtechinterview.blogspot.com//closure-in-javascript?utm_source=hashnode&utm_medium=feed) A closure is the combination of a function bundled together (enclosed) with references to its surrounding state (the lexical environment). In other words, a closure gives you access to an outer function's scope from an inner function. In JavaScript, ... 4 min read · [webtechinterview.blogspot.com](https://webtechinterview.blogspot.com//closure-in-javascript?utm_source=hashnode&utm_medium=feed) [Aug 8, 2023](https://hashnode.com/posts/closure-in-javascript/64d1d51dff523f185db72777) ### [Scope in javascript](https://webtechinterview.blogspot.com//scope-in-javascript?utm_source=hashnode&utm_medium=feed) In JavaScript, scope refers to the visibility and accessibility of variables, functions, and objects in a particular part of your code. It determines where and how variables can be accessed and modified. There are two main types of scope in JavaScrip... 2 min read · [webtechinterview.blogspot.com](https://webtechinterview.blogspot.com//scope-in-javascript?utm_source=hashnode&utm_medium=feed) [Aug 8, 2023](https://hashnode.com/posts/scope-in-javascript/64d1d44d4caa1e60cf3b3671) ### [Difference between localStorage and sessionStorage](https://webtechinterview.blogspot.com//difference-between-localstorage-and-sessionstorage?utm_source=hashnode&utm_medium=feed) Both localStorage and sessionStorage is web storage options provided by modern web browsers to store data on the client side. They have some similarities but also important differences in terms of data persistence and scope. Here's a breakdown of the... 2 min read · [webtechinterview.blogspot.com](https://webtechinterview.blogspot.com//difference-between-localstorage-and-sessionstorage?utm_source=hashnode&utm_medium=feed) [Aug 8, 2023](https://hashnode.com/posts/difference-between-localstorage-and-sessionstorage/64d1d323d20dbc23de320baa) ### [Why do we need callbacks in Javascript](https://webtechinterview.blogspot.com//why-do-we-need-callbacks-in-javascript?utm_source=hashnode&utm_medium=feed) In JavaScript, callbacks are commonly used due to the language's asynchronous nature and event-driven programming model. Here are some specific reasons why callbacks are important in JavaScript: 1. Asynchronous Operations: JavaScript often handles o... 4 min read · [webtechinterview.blogspot.com](https://webtechinterview.blogspot.com//why-do-we-need-callbacks-in-javascript?utm_source=hashnode&utm_medium=feed) [Aug 8, 2023](https://hashnode.com/posts/why-do-we-need-callbacks-in-javascript/64d1d127506116bd16b1cf24)