Here are more tips to keep in mind when naming your variables: Unlike some other programming languages, JavaScript does not require you to explicitly define the type of variable you want to create.

So how do you putt a variable to your code (or declare a variable, as it's more traditionally called)? In JavaScript, all you need to do is this: There are a few of things to notice here.

On August 1, npm Inc. — the company that runs the biggest JavaScript package repository — removed 38 JavaScript npm packages that were caught stealing environment variables from infected projects.