localStorage data does not expire, whereas sessionStorage data is cleared when the page session ends. A unique page
session gets created once a document is loaded in a browser tab. Page sessions are valid for only one tab at a time.
In a browser environment, the global scope is controlled by the window object while in Node. js, it's controlled by the
global object. Block scopes are what you get when you use if statements, for statements, and the like.
JavaScript has a runtime model based on an event loop, which is responsible for executing the code, collecting and
processing events, and executing queued sub-tasks.
While code bases written in JavaScript are larger, debugging and managing are help full to find undefind