Debug Vue Js In Visual Studio Code

Vue.js is a progressive JavaScript framework used to build user interfaces. It offers powerful features and is easy to learn. Debugging Vue.js apps can be challenging, but Visual Studio Code provides an excellent debugging experience for Vue.js apps. In this article, we’ll explore how to debug Vue.js apps in Visual Studio Code.

Setting Up Debugging in Vue.js App

Before we start debugging our Vue.js app, we need to install the Debugger for Chrome extension in Visual Studio Code. This will enable us to debug our Vue.js app in Google Chrome browser. Once you have installed the extension, we can configure the launch.json file in our Vue.js app. The launch.json file tells Visual Studio Code how to launch our app and what debugging options to enable. Here’s an example of a launch.json file:

launch.json file example

	{
	    "version": "0.2.0",
	    "configurations": [
	        {
	            "type": "chrome",
	            "request": "launch",
	            "name": "Launch Chrome against localhost",
	            "url": "http://localhost:8080",
	            "webRoot": "${workspaceFolder}"
	        }
	    ]
	}
	

Starting Debugging Session

To start the debugging session in our Vue.js app, we need to open the app in Visual Studio Code, set a breakpoint on the line of code we want to debug, and then press F5 or go to the Run menu and click the “Start Debugging” option. This will launch our app in Google Chrome browser and pause the execution of the code at the breakpoint we set.

Debugging Vue.js Code

Once our app is paused at the breakpoint, we can use the Debug Console in Visual Studio Code to inspect the variables, run code snippets, and evaluate expressions. We can also use the Call Stack to see the execution order of the functions in our code. If we want to continue the execution of the code, we can press F5 or click the “Continue” button in the Debug Console.

Conclusion

Debugging Vue.js apps is essential for finding and fixing bugs in our code. Visual Studio Code provides a great debugging experience for Vue.js apps, thanks to the Debugger for Chrome extension. By following the steps we’ve outlined in this article, you can easily set up and debug your Vue.js app in Visual Studio Code.

FAQ

1. Can I use Visual Studio Code to debug Vue.js apps in other browsers?

No, the Debugger for Chrome extension only supports Google Chrome browser. If you want to debug your Vue.js app in other browsers, you’ll need to use a different debugging tool.

2. How do I set multiple breakpoints in my Vue.js app?

To set multiple breakpoints in your Vue.js app, simply click on the line number where you want to set the breakpoint. You can set as many breakpoints as you need.

3. Can I debug my Vue.js app remotely?

Yes, you can use the Remote Debugging feature in Visual Studio Code to debug your Vue.js app running on a remote server. You’ll need to configure the launch.json file to specify the host and port of the remote server.

4. How do I use the Debug Console to evaluate expressions?

To use the Debug Console to evaluate expressions, simply type the expression you want to evaluate in the input field at the bottom of the console and press Enter. The result of the expression will be displayed in the console.

5. How do I set conditional breakpoints in my Vue.js app?

To set a conditional breakpoint in your Vue.js app, right-click on the breakpoint and select “Edit Breakpoint”. In the dialog that appears, you can specify a condition that must be met for the breakpoint to be hit.