Learning TypeScript 2.x - Second Edition

Node.js environment versus browser environment

The Node.js environment and the browser environment are not identical. For example, the environment in web browsers includes an API known as the Document Object Model (DOM) and an API known as the Browser Object Model (BOM). These APIs define APIs, such as the window object or the history API. However, these APIs are not available in the Node.js environment. The following table highlights some of the most significant differences between the environment Node.js and web browsers:

Feature	Node.js	Web browsers
DOM	No	Yes
BOM	No	Yes
Global variable is named window	No	Yes
Global variable is named global	Yes	No
The require function	Yes	No
Common JS ...