Nimiq RPC with JavaScript
Pure JavaScript using fetch API and WebSocket - runtime agnostic.
Use standard JavaScript APIs for RPC calls without additional dependencies.
Using Open RPC Servers
The examples below use rpc.nimiqwatch.com, an open RPC server for testing and development. Learn more about available open servers and their limitations.
Basic Request
javascript
const response = await fetch('https://rpc.nimiqwatch.com', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({
jsonrpc: '2.0',
method: 'getAccount',
params: ['NQ07_0000_0000_0000_0000_0000_0000_0000_0000'],
id: 1
})
})
const { result } = await response.json()
console.log('Balance:', result.balance)WebSocket Subscription
javascript
const ws = new WebSocket('wss://rpc.nimiqwatch.com/ws')
ws.onopen = () => {
ws.send(JSON.stringify({
jsonrpc: '2.0',
method: 'subscribeForLogsByAddresses',
params: [['NQ07_0000_0000_0000_0000_0000_0000_0000_0000']],
id: 1
}))
}
ws.onmessage = (event) => {
const data = JSON.parse(event.data)
console.log('New transaction:', data.params)
}