How do I update Node.js?

Answer 1

This is a simple solution that works for all supported operating systems* including Windows:

After a lot of surfing and not finding a straight solution, I just tried going to Node.js site, clicked the DOWNLOADS button on homepage and executed the installer program (MSI).

Thankfully it took care of everything and with a few clicks of 'Next' button I got the latest Node.js version running on my Windows machine.

^{(here is the original answer)}

For Docker users, here's the official Node.js image.

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PS: To check your Node version use npm version or node --version.
PPS: Keep an eye on NodeJS blog - Vulnerabilities so you don't miss important security releases.
PPPS: NodeJS installation includes npm (Node package manager).

^{* Operating systems supported by Node.js: Windows, Linux, MacOS, SunOS, IBM AIX}