How to access data stored on an account on chain?

Question

I have stored information in the following account:

#[account]
pub struct user{
    name: String,
    age:  u64
}

I want to get this information from chain and display it on my frontend using Reactjs.

What are the solana/web3js commands to access data stored in accounts on chain

Answer 1

If you're using Anchor (which I recommend), you can use fetch to decode account data easily.

If you're not using Anchor you need to specify the structure and decode it using something like borsh.

Here is an example

const schema = new Map([[Test, { kind: 'struct', fields: [['x', 'u8'], ['y', 'u64'], ['z', 'string'], ['q', [3]]] }]]);

const newValue = borsh.deserialize(schema, decoded, buffer);

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Example I wrote of decoding Metaplex Metadata