浏览器中的 console.log 时未定义

Question

The code is as follows:

let smartContractState = await zilliqa.blockchain.getSmartContractState(contractAddress);

let users_map = smartContractState.result.users; //users is a mapping as users[getAddress]=name

Till this point everything works fine as I can see the result by console.log(users_map) ;

0x502a2dcaec7ce8a4790141e4fe4753e7edb6381a: "name" 0x812e4a8ec02a01a398141a6546822b1ed0d9acbf: "Naveen" 0xdfe5c37484fa6b83bac3e0673671cb19577c7729: "world" 0xfff4903b3b5739d5d79f73286d05db82677a29e6: "kumar"

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But when I do this:

let username = users_map[getAddress] ;//getAddress : is input by the user. 

where getAddress = 0x502a2dcaec7ce8a4790141e4fe4753e7edb6381a

and print it using console.log(username); it says undefined

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I am providing the link for reference: https://devex.zilliqa.com/address/0x25af495166897a7b1c095f8c3af730446d79c142?network=https://dev-api.zilliqa.com Now you can check the state by going to the state section. Also getSmartContractState is a method defined in the zilliqa.js library. Can anyone help?

Answer 1

smartContractState.result.user is not an array so you can't select based on key ( users_map[getAddress] ). My thought is to use a for loop and check if if matches getAddress.

Answer 2

My feeling is that getAddress does not have the value you're expecting to have. Probably undefined, the rest looks good so I bet that's your problem