We are using the npx command here to execute the Express.js Node package without actually installing it (or by temporarily installing it depending on how you want to think of it). You should see the output: "Hello World". If you need to change the default terminal, select the dropdown menu and choose Select Default Shell. Open your terminal right inside VS Code by selecting View > Terminal (or select Ctrl+`, using the backtick character). Īdd a simple string variable ("Hello World"), then send the contents of the string to your console by entering this in your "app.js" file: var msg = 'Hello World' Open the directory and your app.js file in VS Code using the command: code. Open your command line and create a new directory: mkdir HelloNode, then enter the directory: cd HelloNodeĬreate a JavaScript file named "app.js" with a variable named "msg" inside: echo var msg > app.js If you have not yet installed Visual Studio Code, return to the prerequisite section above and follow the installation steps linked for Windows or WSL. For more information, see Should I install Node.js on Windows or Windows Subsystem for Linux Try NodeJS with Visual Studio Code If you are a beginner, trying Node.js for the first time, we recommend installing directly on Windows.
Create your first Node.js web app using Express.Try using Node.js in Visual Studio Code.Now, write watchers command to check the value of all the variables added into watch().If you're brand new to using Node.js, this guide will help you to get started with some basics. For example, to check the value of data variable in the above example, add data into watch expression as shown below. Use watch('expression') command to add the variable or expression whose value you want to check. In the above figure, you can see that cont command stops at the "debugger". Use cont to stop the execution at next "debugger", if any. In the above figure, next command will set the debugger on the next line. The above command starts the debugger and stops at the first line as shown below.Īs you can see in the above figure, > symbol indicates the current debugging statement. Now, to debug the above application, run the following command.
So, write debugger inside callback function as above. For example, we want to check the "data" parameter in the above example. Write debugger in your JavaScript code where you want debugger to stop.
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