Order: 4
Area: functions
TOCTitle: Run and test your app locally
PageTitle: Run and test your app locally
MetaDescription: Try Azure Functions for free with Visual Studio Code
DateApproved: 2/9/2018
Run and test your App locally
Upon creating the Function application, the necessary VS Code launch configuration was added to your project. To run the project locally, press F5. This will launch and attach to the Azure Functions host - this is the same runtime that runs on Azure so you can be sure that your source code runs the same locally as it does when deployed.
Press F5 to launch the debugger. Output from the Functions Core tools is displayed in the VS Code Integrate Terminal panel. Once the host has started up, the local URL for your Function is written out. Ctrl+Click (Cmd+Click on macOS) the URL to open it in your browser.
The default HTTP template parses a name query parameter to customize the response, add ?name=<yourname> to the URL in your browser to see the response output correctly.
Now that your Function is running locally, make some changes and set a breakpoint to see how Functions works. Learn more about the bindings that are available on docs and keep in mind that all available bindings will run within the Azure Functions extension. This includes triggers from other services such as Azure Storage as seen below.
Next, set up your Azure account and publish the Function App from the extension.