Simple example using the GraphQL (a query language for an API). In this example I am using with Node.js + Express.js, and a fake data in a json file

Node + Express + Nodemon + Babel + GraphQL + DataLoader

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Requirements

• Yarn

• Node.js

How to install

git clone https://github.com/ricardocanelas/graphql-example.git
cd graphql-example

yarn install 

How to start the server

yarn start

Usage

• After you start the server
• And then browse to http://localhost:5000/.
• typing in the input

{
  person(id: "1") {
    firstName
    lastName
    country
  }
}

You can change that.

More examples:

{
  person(id: "7") {
    firstName
    country
    friends {
      firstName
      lastName
      country
    }
  }
}

{
  person(id: "3") {
    firstName
    country
    friends {
      firstName
      lastName
      country
      friends {
          firstName
          friends {
              country
          }
      }
    }
  }
}

More about the GraphQL

GraphQL is a query language for your API, and a server-side runtime for executing queries by using a type system you define for your data. GraphQL isn't tied to any specific database or storage engine and is instead backed by your existing code and data.

http://graphql.org/