JavaScript APIs# Javascript API
## About JavaScript APIs
Query data sources for weather forecasts, flight data, sports information, and more with popular JavaScript compatible APIs.
## What is a JavaScript API?
A JavaScript application programming interface (API) is a RESTful web service that is compatible with the JavaScript programming language. The API allows developers to add data retrieval functionality to their applications or websites.
## How does an API for developers of JavaScript projects work?
An API that many JavaScript users prefer commonly uses the GET request method. However, a POST request may be used to create objects for classifying items or detecting specific content in the response body of the request. For example, a POST request could extract ingredients from the results of a recipe-based API. JavaScript Object Notation (JSON) formatted responses are returned.
## Who is an API for JavaScript projects for?
New JavaScript developers, in particular, will benefit from using popular JavaScript APIs. Any business that wants to retrieve information from outside sources will appreciate what JavaScript APIs offer as well.
## Why is an API for JavaScript developers important?
Although there many programming languages available, JavaScript is a high-level scripting language that is easy to learn and integrate. Third-party APIs for JavaScript applications can handle complex code. This helps new developers quickly add the functionality they need so that they can get their projects to market faster.
Since APIs are easy to maintain in the long term, businesses can save on operational costs for upgrading and testing. APIs are a feasible alternative to maintaining a large on-premise network of manually written code to retrieve several outside data sources.
## What can you expect from a JavaScript API?
The best JavaScript APIs offer speed and low latency; therefore, developers can look forward to creating projects with minimal demands on the server. Improved performance is a key factor in using JavaScript-friendly APIs.
Businesses can expect to retrieve data in the shortest time with the best JavaScript APIs. Using endpoints to access outside sources is simpler with an API.
## Are there examples of free APIs that are favorites among JavaScript developers?
RapidAPI's Marketplace lists free and freemium APIs that are popular with JavaScript developers and end-users. API-Football by API-Sports has a freemium pricing structure with a free Basic plan. The API retrieves sports predictions, team and players statistics, and other sports-related data.
Another popular freemium JavaScript API is Weather by Weatherbit. It also has a free Basic plan. The API allows developers to add the functionality to obtain severe weather alerts plus 120-hour, 5-day, and 16-day forecasts.
## Best JavaScript APIs for Developers
1. [OpenWeatherMap](https://rapidapi.com/community/api/open-weather-map)
2. [Skyscanner](https://rapidapi.com/skyscanner/api/skyscanner-flight-search)
3. [Yahoo Finance](https://rapidapi.com/apidojo/api/yahoo-finance1)
4. [API-Football](https://rapidapi.com/api-sports/api/api-football)
5. [Weatherbit](https://rapidapi.com/weatherbit/api/weather)
6. [Spoonacular](https://rapidapi.com/spoonacular/api/recipe-food-nutrition)
7. [IMDB](https://rapidapi.com/imdb/api/movie-database-imdb-alternative)
8. [Deezer](https://rapidapi.com/deezerdevs/api/deezer-1)
9. [Cricket Live Scores](https://rapidapi.com/dev132/api/cricket-live-scores)
## JavaScript API SDKs
All JavaScript APIs are supported and made available in [multiple developer programming languages and SDKs](https://docs.rapidapi.com/v2.0/docs/getting-started-with-rapidapi-sdks) including:
1. Node.js
2. PHP
3. Python
4. Ruby
5. Objective-C
6. Java (Android)
7. C# (.NET)
8. cURL
Just select your preference from any API endpoints page.
[Sign up today for free on RapidAPI](https://rapidapi.com/signup) to begin using JavaScript APIs!
This API reproduces live PUBLIC data and features of YH. The response data is always live and synced with the site at request time. You are going to get almost everything that you see PUBLICLY on the site.
The spoonacular Recipe - Food - Nutrition API gives you to access to thousands of recipes, storebought packaged foods, and chain restaurant menu items. Our food ontology and semantic recipe search engine makes it possible to search for recipes using natural language queries, such as "gluten free brownies without sugar" or "low fat vegan cupcakes." You can automatically calculate the nutritional information for any recipe, estimate recipe costs, visualize ingredient lists, find recipes for what's in your fridge, find recipes based on special diets, nutritional requirements, or favorite ingredients, classify recipes into types and cuisines, convert ingredient amounts, or even compute an entire meal plan. With our powerful API, you can create many kinds of food and nutrition apps.
Special diets/dietary requirements currently available include: vegan, vegetarian, pescetarian, gluten free, grain free, dairy free, high protein, low sodium, low carb, Paleo, Primal, ketogenic, and more.