Read header key value from the response header React Js

Question

console snapshotI am calling one fetch API which giving the response header 'key-name':'value'. I checked in the chrome developer tools network tab. It showing the value. However, I am trying to read it during API response it's showing empty. I tried multiple ways but still not working. Below is my code.

const requestOptions = {
                method: 'POST',
                headers: {
                    'Content-Type': 'application/json',
                },
                body: JSON.stringify({
                    pid: d,
                    cy: v
                }
                )
            };
                
  fetch('https://mysite/api/manage/', requestOptions)
                .then(res => res.json())
                .then(jsong => {
                    console.log(jsong);
            console.log(jsong.headers); 
                }).catch((err) => {
                    console.log(err);
                });

Please help. I added a console snapshot and network response snapshot as well. network response snapshot

Answer 1

I got the solution and here is the answer. It might be useful for someone

fetch('mysite.com/api/manage-cart/', requestOptions)
            .then(res => res.headers.get('cart_info')
            )
            .then(res => {
                window.localStorage.setItem("cartData", JSON.stringify(res));
            }).catch((err) => {
                console.log(err);
            }); .

I am storing the value on local storage for further use.