Develop Azure Functions with Node.js
Overview
Azure Functions provides a serverless compute experience for building event-driven applications using JavaScript or TypeScript. This guide walks you through creating, testing, and deploying Node.js functions.
Prerequisites
- Node.js 18.x LTS (download)
- Azure Functions Core Tools (
npm i -g azure-functions-core-tools@4 --unsafe-perm true) - Azure CLI (
az login) - VS Code with the Azure Functions extension (optional but recommended)
Create a New Function
Run the following commands in your terminal:
func init MyFunctionApp --worker-runtime node
cd MyFunctionApp
func new --template "HTTP trigger" --name HttpExample
Local Development
Start the function host locally:
func start
Open http://localhost:7071/api/HttpExample in a browser to test.
Debugging with VS Code
Open the project folder in VS Code and press F5 to launch the debugger.
Deploy to Azure
Log in to Azure and create a resource group and storage account if you haven't already:
az group create --name MyResourceGroup --location eastus
az storage account create --name mystorageaccount --location eastus --resource-group MyResourceGroup --sku Standard_LRS
Deploy the function app:
func azure functionapp publish my-node-func-app
Environment Variables
Set application settings via the Azure portal or CLI:
az functionapp config appsettings set --name my-node-func-app --resource-group MyResourceGroup --settings MySetting=Value