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Install express globally install#
By default with version npm 5.0+ npm install adds the module to the dependencies list in the package.json file with earlier versions of npm, you must specify the -save option explicitly. Express is a minimal and flexible Node.js web application framework that provides a robust set of features. The second is the global nodemodules folder on the user system. The first is at the root directory where package.json is defined. This means the package is installed in two places. When run with -global or -g, npm install installs the package globally.
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We started the express application server to listen on port 8000. To install Express temporarily and not add it to the dependencies list: npm install express -no-save. In this post we will be discussing about getting started with Node.js framework Express. npm install (with -global) npm install -g. Res.send() sends the argument to this function as response to the client. The req and res hold the request and response objects respectively for this GET request. app.get('/', function (req, res) gets executed when a client sends a GET reques for the path ‘/’. We can use this application instance to make it listen on port for requests, or some other functionalities which we will see in the next topics of this Express.js Tutorial. This application function now acts as an independent. This will pull Express.js from the repository in npm and automatically install it globally (that's what the -g is for). npm install -g express Installing Express Use the following command to install express: npm install express -save The above command install express in nodemodule directory and create a directory named express inside the nodemodule. yum install gcc-c++ openssl-devel make 4. Use the following command to install express framework globally. We created an instance for an application by calling express() function. It is not essential, but it will save you some headaches when doing npm install package in the future. We imported express package into app.js using require function. Let us see what we have done there in app.js.