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GraphQL /
Querying From A Dapp

Icon LinkQuerying From A Dapp

There are several ways to interact with the Fuel GraphQL API from a frontend application. This section covers just a few options available to get you started.

Icon LinkJavaScript 

export async function getHealth() {
  let response = await fetch('https://beta-4.fuel.network/graphql', {
    method: 'POST',
    headers: {
      'Content-Type': 'application/json',
      Accept: 'application/json',
    },
    body: JSON.stringify({ query: '{ health }' }),
  });
  let data = await response.json();
  console.log('DATA:', data);
}

Icon LinkApollo Client

Read the official Apollo Client docs here Icon Link. 

npm install @apollo/client graphql
import { ApolloClient, InMemoryCache, gql } from '@apollo/client';
 
const apolloClient = new ApolloClient({
  uri: 'https://beta-4.fuel.network/graphql',
  cache: new InMemoryCache(),
});
 
const HEALTH_QUERY = `
  query {
    health
  }
`;
 
export const checkHealth = async () => {
  const response = await apolloClient.query({
    query: gql(HEALTH_QUERY),
  });
  console.log('RESPONSE:', response);
};

Icon Linkurql

Read the official urql docs here Icon Link. 

npm install urql graphql
import { Client, cacheExchange, fetchExchange } from 'urql';
 
const urqlClient = new Client({
  url: 'https://beta-4.fuel.network/graphql',
  exchanges: [cacheExchange, fetchExchange],
});
 
const HEALTH_QUERY = `
  query {
    health
  }
`;
 
export const checkHealth = async () => {
  const response = await urqlClient.query(HEALTH_QUERY).toPromise();
  console.log('RESPONSE:', response);
};

You can see more examples in the next section.