Simple guide to decoding JSON in React Native

Question

Simple guide to decoding JSON in React Native

Currently, I am working on a react native project where I am calling an API to extract data. The extraction process is successful, but now I am facing an issue with taking arguments from the extracted data.


Axios({
  url: '/Authentification',
  method: 'get',
  baseURL: 'http://smart.netrostercloud.com/api',
  transformRequest: [
    function (data, headers) {
      return data;
    },
  ],
  transformResponse: [
    function (data) {
      // console.log(data);
      setData3(data);
    },
  ],
  headers: {
    Authorization: 'Basic UxvwJc1GWjkOCyZoIHGuCD05gDUB72sqrgK30FgILho=',
  },
});

console.log(data3);

I have utilized data3 to extract the data in my main function so that it can be viewed. Here is the link to the data: https://i.sstatic.net/7Eq0Q.png

My goal is to extract CompanyCode, UserName, Password, FirstName, and LastName from the data.

javascript json

Answer 1

Answer №1

One thing to note is that axios is an asynchronous function, meaning it returns a promise. Personally, I prefer not to use this pattern for simple API calls. However, it can be a good approach if you are familiar with the concept and use object-oriented programming to create instances of axios for reusability and to cancel connections when a component is unmounted.

Instead, I prefer to use the following method:
const getUserData = async () => {
  try {
    const { data } = await axios.get(baseUrl + route, headers, options);
    data && setData({ username: data.user.username, ... });
    doSomething();
  } catch (error) {
    doSomething();
  }
}

Answer 2

One thing to note is that axios is an asynchronous function, meaning it returns a promise. Personally, I prefer not to use this pattern for simple API calls. However, it can be a good approach if you are familiar with the concept and use object-oriented programming to create instances of axios for reusability and to cancel connections when a component is unmounted.

Instead, I prefer to use the following method:
const getUserData = async () => {
  try {
    const { data } = await axios.get(baseUrl + route, headers, options);
    data && setData({ username: data.user.username, ... });
    doSomething();
  } catch (error) {
    doSomething();
  }
}

Answer 3

Answer №2

Prior to storing any information in data3, it is important to convert the data into a string using the following method: setData3(JSON.stringify(data));

After converting the data, you can proceed with the following steps:

if (data3) {
  const COMPANY_NAME = data?.user?.CompanyCode;
  const USERNAME = data?.user?.UserName;
  const FIRSTNAME = data?.user?.FirstName;
  const LASTNAME = data?.user?.LastName;
}

Answer 4

Prior to storing any information in data3, it is important to convert the data into a string using the following method: setData3(JSON.stringify(data));

After converting the data, you can proceed with the following steps:

if (data3) {
  const COMPANY_NAME = data?.user?.CompanyCode;
  const USERNAME = data?.user?.UserName;
  const FIRSTNAME = data?.user?.FirstName;
  const LASTNAME = data?.user?.LastName;
}

Simple guide to decoding JSON in React Native

Answer №1

Answer №2

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