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ApiPromise Examples

Here you will find a list of examples that takes you through the basics of connecting to a local node, retrieving data from the Node and chain and execute transactions on the chain. It uses the [[ApiPromise]] interface.

Prerequisites​

For the following examples, you need a local node. It is usually convenient testing with:

substrate --dev

Running the examples​

From each folder, run yarn to install the required dependencies and then run yarn start to execute the example against the running node.

Development accounts​

Some of the examples use the following accounts:

  • Alice: 5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY
  • Bob: 5FHneW46xGXgs5mUiveU4sbTyGBzmstUspZC92UhjJM694ty

Those accounts are easy to add if you don't have/see them. The seed of Alice's account is //Alice (via keyring.addUri(...), dev seed implied) and the seed of Bob is... well you guess...