Tip: You can open files or folders directly from the command line. Hello WorldLet's get started by creating the simplest Node.js application, "Hello World".Create an empty folder called "hello", navigate into and open VS Code: mkdir hello cd hello code. To learn more, go to Developing in WSL or try the Working in WSL tutorial. When coupled with the Remote - WSL extension, you get full VS Code editing and debugging support while running in the context of WSL.Log ( msg ) Note that when you typed console. Refer to the VS Code JavaScript language topic to learn more about JavaScript support.Create a simple string variable in app.js and send the contents of the string to the console: var msg = 'Hello World' console. Js file extension, VS Code interprets this file as JavaScript and will evaluate the contents with the JavaScript language service.
![]() ![]() ![]() Node Js Full VS CodeFrom a terminal, just type: node app.jsYou should see "Hello World" output to the terminal and then Node.js returns. Running Hello WorldIt's simple to run app.js with Node.js. You'll see IntelliSense showing all of the string functions available on msg.After experimenting with IntelliSense, revert any extra changes from the source code example above and save the file ( ⌘S (Windows, Linux Ctrl+S)). Your breakpoint will be hit and you can view and step through the simple application. A red circle will appear in the gutter.To start debugging, select the Run View in the Activity Bar:You can now click Debug toolbar green arrow or press F5 to launch and debug "Hello World". Let's try debugging our simple Hello World application.To set a breakpoint in app.js, put the editor cursor on the first line and press F9 or click in the editor left gutter next to the line numbers. Debugging Hello WorldAs mentioned in the introduction, VS Code ships with a debugger for Node.js applications. You can run Node.js directly from there and avoid switching out of VS Code while running command-line tools.View > Terminal ( ⌃` (Windows, Linux Ctrl+`) with the backtick character) will open the integrated terminal and you can run node app.js there:For this walkthrough, you can use either an external terminal or the VS Code integrated terminal for running the command-line tools. The Express Generator is shipped as an npm module and installed by using the npm command-line tool npm.Tip: To test that you've got npm correctly installed on your computer, type npm -help from a terminal and you should see the usage documentation.Install the Express Generator by running the following from a terminal: npm install -g express-generatorThe -g switch installs the Express Generator globally on your machine so you can run it from anywhere.We can now scaffold a new Express application called myExpressApp by running: express myExpressApp -view pugThis creates a new folder called myExpressApp with the contents of your application. You can scaffold (create) a new Express application using the Express Generator tool. An Express applicationExpress is a very popular application framework for building and running Node.js applications. You can delete the "Hello" folder if you want as it is not required for the rest of the walkthrough. Change thumbnail for mp4 macFor example, you can require http and get full IntelliSense against the http class as you type in Visual Studio Code.VS Code uses TypeScript type declaration (typings) files (for example node.d.ts) to provide metadata to VS Code about the JavaScript based frameworks you are consuming in your application. Even more interesting, you can get full IntelliSense against the Node.js framework. Notice how VS Code understands that _dirname is a string. Visual Studio Code will make you more productive in developing these types of applications by providing great code editing and navigation experiences.Open the file app.js and hover over the Node.js global object _dirname. /bin/application running.From a terminal in the Express application folder, run: npm startThe Node.js web server will start and you can browse to to see the running application.Close the browser and from a terminal in the myExpressApp folder, stop the Node.js server by pressing CTRL+C.Note: If you've been using the VS Code integrated terminal to install the Express generator and scaffold the app, you can open the myExpressApp folder from your running VS Code instance with the File > Open Folder command.The Node.js and Express documentation does a great job explaining how to build rich applications using the platform and framework. The generated Express application has a package.json file which includes a start script to run node. Try crossover games for mac/routes/index module, which exports an Express. For example, in app.js we require the. Thanks to a feature called Automatic Type Acquisition, you do not have to worry about downloading these type declaration files, VS Code will install them automatically for you.You can also write code that references modules in other files.
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