How to call the web API on a node

So far, we've learned what a RESTful API is and which node is appropriate for an API call.

In this part, let's create a flow that actually calls the API from Node-RED and learn how to call the API and how to handle the result value from the API.

There are a few things to think about first, such as which API to call. Fortunately, various APIs are published on the internet.

This time, I would like to use the OpenWeatherMap API. In OpenWeatherMap, for example, the following APIs for data acquisition are prepared:

• Current weather data
• Hourly forecast 4 days
• Daily forecast 16 days
• Climatic forecast 30 days
• Weather alerts
• And more...

For more information, please see the official website of OpenWeatherMap: https://openweathermap.org/.

Okay, let's prepare to use the OpenWeatherMap API.

Creating an account

To use the OpenWeatherMap API, we need to create an account. Please access the following...