There are two ways to install Express. We'll will start with the simple one and then proceed to the more advanced technique. The simpler approach generates a template, which we may use to start writing the business logic directly. In some cases, this can save us time. From another viewpoint, if we are developing a custom application, we need to use custom settings. We can also use the boilerplate, which we get with the advanced technique; however, it may not work for us.
Express is like every other module. It has its own place in the packages register. If we want to use it, we need to add the framework in the package.json file. The ecosystem of Node.js is built on top of the Node Package Manager. It uses the JSON file to find out what we need and installs it in the current directory. So, the content of our package.json file looks like the following code:
{
"name": "projectname",
"description": "description",
"version": "0.0.1",
"dependencies": ...