null
undefined
There are two important values in JavaScript that you frequently come across in almost all your projects: null and undefined. JavaScript provides convenient tools to handle these values without writing multiple conditions, allowing you to write cleaner and more efficient code.
NaN
In JavaScript, NaN has a special place. Although it is technically a number itself, it represents values that are not valid numbers. For this reason, it has some interesting properties, pitfalls, and tricky points worth mentioning.
Node.js powers the infrastructure of hundreds of thousands of web applications worldwide and is often used alongside Nginx, a powerful web server and load balancer, to run and manage high-traffic applications.
NVM (Node Version Manager) is a tool that allows you to install and manage multiple versions of Node. Although it’s possible to install any version of Node you want, NVM provides many conveniences such as easy version updates and quick switching between versions.
