An error occurs when attempting to access data from the JSON file

Currently, I am utilizing an API to retrieve the balance from a bitcoin address.

This is my code:

async function getWalletBalance(address) {
    try {
        const response = await got(`blockchain.info/balance?active=${address}`)
        return response.body.address.final_balance
    } catch(err) {
        return err
    }
}

The JSON that is being returned looks like this:

{
  "3D2oetdNuZUqQHPJmcMDDHYoqkyNVsFk9r": {
    "final_balance": 15392048444281,
    "n_tx": 3938,
    "total_received": 138450271881712
  }
}

However, when attempting to access the final balance, it returns undefined. What steps should I take to resolve this issue?

javascriptjson

Answer №1

response.body.address.final_balance
is seeking the exact key address, not looking for the key 
3D2oetdNuZUqQHPJmcMDDHYoqkyNVsFk9r
in your given example.

Using 

response.body[address].final_balance
instead should resolve the issue.

The following code snippet has been slightly adjusted (without a real response) but is designed to work:

function getWalletBalance(address) {
    try {
        const body = {
          "3D2oetdNuZUqQHPJmcMDDHYoqkyNVsFk9r": {
            "final_balance": 15392048444281,
            "n_tx": 3938,
            "total_received": 138450271881712
          }
        };
        console.log('using body[address]:', body[address].final_balance);
    } catch(err) {
        return err
    }
}

getWalletBalance("3D2oetdNuZUqQHPJmcMDDHYoqkyNVsFk9r");

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