When you install a third-party package in your project, you are thereby creating a dependency. You need to be in your project folder and run this: npm install package_name To install a package, you need to use a command with npm. Read and make sure it has good documentation = easy to use Make sure it was updated recently = good support To choose the right package from several other packages that do the same thing, you look for the following key considerations:Ĭheck out the weekly downloads = more popular = better package In this article, we will use a package I discovered called XLSX To use npm, simply go and look for the package you desire (if one exists) on the npm website. That way we can reduce our development time and focus on our own features.
NPM acts as an online marketplace for packages that anybody can use for free to help them out with their project.įor example, to do complex excel processing in our project, we can install a third-party npm package and use it instead of building that logic from scratch. This way other developers can benefit and they don't need to write code from scratch.Īll these nice developers need to do is turn their code into a module and, they can publish it on npm as a package. You don't need to install it separately, it will be there after you install node.īecause node is open source, and developers are nice people (usually), developers can expose their projects for other developers to use. So node also has this really cool thing that comes with it called NPM. What about NPM? Node's equally cool best friend! To check node is properly installed run this command in your terminal: node -version Please follow the instructions on the official website: Now that you have heard of the great almighty Node.js, it's time to install Node.js on your local computer Node.js allows us to write backend or server code in JavaScript! Before this was not possible, you had to use Java or PHP for instance. Node.js allows us to run JavaScript outside the browser, on a server for example Node.js can be installed on any server, it's open-source and free Node.js is a new(ish) runtime environment for JavaScript.
Now there are two ways to run JavaScript:
Node.js is a new environment for JavaScript. But now, we can run JavaScript code almost anywhere…how? By installing the one they call, Node.js. This limited JavaScript from being used outside of the browser. So whenever we wrote JavaScript we would only really see it in action once we open a web page on the browser. In fact, the browser used to be the only runtime environment for JavaScript. When we think JavaScript, we think browser, websites, web pages, interactivity, event listeners, onclick, etc.
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