Run Node Js In Visual Studio Code

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  1. Node Js Development In Visual Studio
  2. Node Js Visual Studio Example
  3. Visual Studio Code Install Node
  4. Run Node Js In Visual Studio Code Download

Enter Node.js code and see the results immediately in the Node.js Interactive Window (also known as a REPL window). You can use the same built-in modules, syntax, and variables you’d use in a Node.js script. And of course, you’ll get full syntax highlighting and IntelliSense on your code, just like you do. Install node.js visual studionode.js tools for visual studio 2017install node.js tools for visual studio 2015how to create node js project in visual studio c.

Deploy your Express.js app to Azure with the Visual Studio Code extension for Azure App Service extension. To accomplish this goal:

  • Create Express.js app
  • Create a web app resource to host app
  • Deploy app to resource
  • View remote logs locally

1. Set up your development environment

  • Create a free Azure subscription
  • Install Node.js 14+ and npm
  • Install Visual Studio Code and use the following extensions:

2. Sign in to Azure

If you already use the Azure service extensions, you should already be logged in and can skip this step.

Once you've installed an extension in Visual Studio Code, you need to sign into your Azure account.

  1. In Visual Studio Code, select the Azure explorer icon, then select Sign in to Azure, and follow the prompts.

  2. After signing in, verify that the email address of your Azure account appears in the Status Bar and your subscription(s) appears in the Azure explorer:

Note

If you see the error 'Cannot find subscription with name [subscription ID]', this may be because you are behind a proxy and unable to reach the Azure API. Configure HTTP_PROXY and HTTPS_PROXY environment variables with your proxy information in your terminal:

3. Create a local Express.js app

Create and run an Express.js app by cloning an Azure sample repository.

  1. At a terminal command prompt, go to the location where you want to create the app folder.

  2. Use the following base command with git to clone the repository, change into the repository folder named myexpressapp, then install the npm dependencies.

4. Run your local Express.js app

  1. Start the server:

  2. Test the app by opening a browser to http://localhost:3000. The site should appear as follows:

  3. Press Ctrl+C in the terminal to stop the server.

5. Create App service resource in Visual Studio Code

  1. Use Ctrl+Shift+P to open the command palette.

  2. Enter create web then select Azure App Service: Create New Web App..Advanced.

    You use the advanced command to have full control over the deployment including resource group, App Service Plan, and operating system rather than use Linux defaults.

  3. Respond to the prompts as follows:

    • Select your Subscription account.
    • For Enter a globally unique name, enter a name that's unique across all of Azure. Use only alphanumeric characters ('A-Z', 'a-z', and '0-9') and hyphens ('-')
    • Select Create new resource group and provide a name like AppServiceTutorial-rg.
    • Select the Linux operating system.
    • Select Create a new App Service plan, provide a name like AppServiceTutorial-plan, and select the F1 Freepricing tier.
    • Select Skip for now for the Application Insights resource.
    • Select a location near you.

  4. After a short time, VS Code notifies you that creation is complete. Close the notification with the X button:

  5. Mac os latest version download for pc iso. With the web app in place, you next instruct VS Code to deploy your code from the local Git repo. Select the Azure icon to open the Azure App Service explorer, expand your subscription node, right-click the name of the web app you just created, and select Configure Deployment Source.

  6. When prompted, select LocalGit.

  7. Select the blue up arrow icon to deploy your code to Azure:

  8. At the prompts, select the myexpressapp folder, select your subscription account again and then select the name of the web app created earlier.

  9. When deploying to Linux, select Yes when prompted to update your configuration to run npm install on the target server.

  10. When prompted with Always deploy the workspace 'nodejs-docs-hello-world' to (app name)', select Yes. This tells VS Code to automatically target the same App Service web app with subsequent deployments.

  11. Once deployment is complete, select Browse Website in the prompt to view your freshly deployed web app. The browser should display 'Hello World!'

7. Stream remote service logs in Visual Studio Code

View (tail) any output that the running app generates through calls to console.log. This output appears in the Output window in Visual Studio Code.

  1. In the Azure App Service explorer, right-click the app node and choose Start Streaming Logs.

  2. When prompted, choose to enable logging and restart the application.

  3. Once the app is restarted, the VS Code Output window opens with a connection to the log stream that shows output.

  4. Refresh the web page a few times in the browser to see additional log output.

8. Make changes and redeploy

  1. Make a small change to the app. Change Welcome to Express to Welcome to Express with Visual Studio Code.

  2. Right-click your app service from the list of App services in the App service extension, then select Deploy to Web App...

9. Clean up resources

When you want to clean up the resources, right-click on the App service in the Visual Studio Code's App Service extension, then select Delete.

Next steps

Run

Congratulations, you've successfully completed this walkthrough! You're ready to check out the other Azure extensions.

You can install all the Azure extensions together by installing theNode for Azure extension pack.

To learn more about working with Azure using Node.js, visit the resources below:

  • Azure for Node.js developer center.

React is a popular JavaScript library developed by Facebook for building web application user interfaces. The Visual Studio Code editor supports React.js IntelliSense and code navigation out of the box.

Welcome to React

We'll be using the create-react-appgenerator for this tutorial. To use the generator as well as run the React application server, you'll need Node.js JavaScript runtime and npm (Node.js package manager) installed. npm is included with Node.js which you can download and install from Node.js downloads.

Tip: To test that you have Node.js and npm correctly installed on your machine, you can type node --version and npm --version in a terminal or command prompt.

You can now create a new React application by typing:

where my-app is the name of the folder for your application. This may take a few minutes to create the React application and install its dependencies.

Note: If you've previously installed create-react-app globally via npm install -g create-react-app, we recommend you uninstall the package using npm uninstall -g create-react-app to ensure that npx always uses the latest version.

Let's quickly run our React application by navigating to the new folder and typing npm start to start the web server and open the application in a browser:

Download xcode 8 for mac. You should see the React logo and a link to 'Learn React' on http://localhost:3000 in your browser. We'll leave the web server running while we look at the application with VS Code.

To open your React application in VS Code, open another terminal or command prompt window, navigate to the my-app folder and type code .:

Markdown preview

In the File Explorer, one file you'll see is the application README.md Markdown file. This has lots of great information about the application and React in general. A nice way to review the README is by using the VS Code Markdown Preview. You can open the preview in either the current editor group (Markdown: Open Preview⇧⌘V (Windows, Linux Ctrl+Shift+V)) or in a new editor group to the side (Markdown: Open Preview to the Side⌘K V (Windows, Linux Ctrl+K V)). You'll get nice formatting, hyperlink navigation to headers, and syntax highlighting in code blocks.

Syntax highlighting and bracket matching

Now expand the src folder and select the index.js file. You'll notice that VS Code has syntax highlighting for the various source code elements and, if you put the cursor on a parenthesis, the matching bracket is also selected.

IntelliSense

As you start typing in index.js, you'll see smart suggestions or completions.

After you select a suggestion and type ., you see the types and methods on the object through IntelliSense.

VS Code uses the TypeScript language service for its JavaScript code intelligence and it has a feature called Automatic Type Acquisition (ATA). ATA pulls down the npm Type Declaration files (*.d.ts) for the npm modules referenced in the package.json.

If you select a method, you'll also get parameter help:

Go to Definition, Peek definition

Through the TypeScript language service, VS Code can also provide type definition information in the editor through Go to Definition (F12) or Peek Definition (⌥F12 (Windows Alt+F12, Linux Ctrl+Shift+F10)). Put the cursor over the App, right click and select Peek Definition. A Peek window will open showing the App definition from App.js.

Press Escape to close the Peek window.

Hello World!

Let's update the sample application to 'Hello World!'. Create a new H1 header with 'Hello, world!' and replace the <App /> tag in ReactDOM.render with element.

Once you save the index.js file, the running instance of the server will update the web page and you'll see 'Hello World!' when you refresh your browser.

Tip: VS Code supports Auto Save, which by default saves your files after a delay. Check the Auto Save option in the File menu to turn on Auto Save or directly configure the files.autoSave user setting.

Debugging React

Node Js Development In Visual Studio

To debug the client side React code, we'll need to install the Debugger for Chrome extension.

Note: This tutorial assumes you have the Chrome browser installed. There are also debugger extensions for the Edge and Firefox browsers.

Open the Extensions view (⇧⌘X (Windows, Linux Ctrl+Shift+X)) and type 'chrome' in the search box. You'll see several extensions which reference Chrome.

Press the Install button for Debugger for Chrome.

Set a breakpoint

To set a breakpoint in index.js, click on the gutter to the left of the line numbers. This will set a breakpoint which will be visible as a red circle.

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Configure the Chrome debugger

We need to initially configure the debugger. To do so, go to the Run view (⇧⌘D (Windows, Linux Ctrl+Shift+D)) and click create a launch.json file to customize Run and Debug. Choose Chrome from the Select Environment dropdown list. This will create a launch.json file in a new .vscode folder in your project which includes a configuration to launch the website.

We need to make one change for our example: change the port of the url from 8080 to 3000. Your launch.json should look like this:

Ensure that your development server is running (npm start). Then press F5 or the green arrow to launch the debugger and open a new browser instance. The source code where the breakpoint is set runs on startup before the debugger was attached, so we won't hit the breakpoint until we refresh the web page. Refresh the page and you should hit your breakpoint.

You can step through your source code (F10), inspect variables such as element, and see the call stack of the client side React application.

The Debugger for Chrome extension README has lots of information on other configurations, working with sourcemaps, and troubleshooting. You can review it directly within VS Code from the Extensions view by clicking on the extension item and opening the Details view.

Live editing and debugging

If you are using webpack together with your React app, you can have a more efficient workflow by taking advantage of webpack's HMR mechanism which enables you to have live editing and debugging directly from VS Code. You can learn more in this Live edit and debug your React apps directly from VS Code blog post and the webpack Hot Module Replacement documentation.

Linting

Linters analyze your source code and can warn you about potential problems before you run your application. The JavaScript language services included with VS Code has syntax error checking support by default, which you can see in action in the Problems panel (View > Problems⇧⌘M (Windows, Linux Ctrl+Shift+M)).

Try making a small error in your React source code and you'll see a red squiggle and an error in the Problems panel.

Linters can provide more sophisticated analysis, enforcing coding conventions and detecting anti-patterns. A popular JavaScript linter is ESLint. ESLint, when combined with the ESLint VS Code extension, provides a great in-product linting experience.

First, install the ESLint command-line tool:

Then install the ESLint extension by going to the Extensions view and typing 'eslint'.

Once the ESLint extension is installed and VS Code reloaded, you'll want to create an ESLint configuration file, .eslintrc.js. You can create one using the extension's ESLint: Create ESLint configuration command from the Command Palette (⇧⌘P (Windows, Linux Ctrl+Shift+P)).

The command will prompt you to answer a series of questions in the Terminal panel. Take the defaults, and it will create a .eslintrc.js file in your project root that looks something like this:

ESLint will now analyze open files and shows a warning in index.js about 'App' being defined but never used.

Node Js Visual Studio Example

You can modify the ESLint rules in the .eslintrc.js file.

Let's add an error rule for extra semi-colons:

Now when you mistakenly have multiple semicolons on a line, you'll see an error (red squiggle) in the editor and error entry in the Problems panel.

Popular Starter Kits

In this tutorial, we used the create-react-app generator to create a simple React application. There are lots of great samples and starter kits available to help build your first React application.

VS Code React Sample

Visual Studio Code Install Node

This is a sample React application used for a demo at the 2016 //Build conference. The sample creates a simple TODO application and includes the source code for a Node.js Express server. It also shows how to use the Babel ES6 transpiler and then use webpack to bundle the site assets.

TypeScript React

If you're curious about TypeScript and React, you can also create a TypeScript version of the create-react-app application by specifying that you want to use the TypeScript template:

See the details at Adding TypeScript on the Create React App site.

Angular

Angular is another popular web framework. If you'd like to see an example of Angular working with VS Code, check out the Chrome Debugging with Angular CLI recipe. It will walk you through creating an Angular application and configuring the launch.json file for the Debugger for Chrome extension.

Common questions

Can I get IntelliSense within declarative JSX?

Run Node Js In Visual Studio Code Download

Yes. For example, if you open the create-react-app project's App.js file, you can see IntelliSense within the React JSX in the render() method.