Problème de conversion de données JavaScript

Dans JavaScript Vous voulez des données selon mes besoins, mais je ne sais pas comment convertir des données .Je reçoive des données de Fitbit et de la réponse de l'API Web Donnez des données JSON et je souhaite modifier ces données à l'aide de JavaScript. Ma réponse de l'API est spectacle ci-dessous ..

let date = new Date();
let todayDate = `${date.getFullYear()}-${date.getMonth() + 1}-${date.getDate()}`;
//  let endDate =`${date.getFullYear()}-${date.getMonth() + 1}-${date.getDate() + 1}`;
//   console.log(endDate);
var url = window.location.href;

//getting the access token from url
var access_token = url.split("#")[1].split("=")[1].split("&")[0];

// get the userid
var userId = url.split("#")[1].split("=")[2].split("&")[0];

// console.log(access_token);

var response = [];
var key = "date";
var obj = {};
obj[key] = todayDate;
response.push(obj);
console.log(response);
// Make an API request and graph it
var processResponse = function (res) {
    if (!res.ok) {
        throw new Error('Fitbit API request failed: ' + res);
    }

    var contentType = res.headers.get('content-type')
    if (contentType && contentType.indexOf("application/json") !== -1) {
        return res.json();
    } else {
        throw new Error('JSON expected but received ' + contentType);
    }
}
var xhr = new XMLHttpRequest();
xhr.open('GET', 'https://api.fitbit.com/1/user/' + userId + '/activities/steps/date/today/1d.json');
xhr.setRequestHeader("Authorization", 'Bearer ' + access_token);
xhr.onload = function () {
    if (xhr.status === 200) {

        var d1 = xhr.responseText;
        var jsonResponse = JSON.parse(d1);
        var steps = jsonResponse["activities-steps"][0].value;
        console.log("steps:", steps);
        var key = "steps";
        var obj = {};
        obj[key] = steps;
        response.push(obj);

    }
};
xhr.send();
var xhr2 = new XMLHttpRequest();
xhr2.open('GET', 'https://api.fitbit.com/1/user/' + userId + '/activities/distance/date/today/1d.json');
xhr2.setRequestHeader("Authorization", 'Bearer ' + access_token);
xhr2.onload = function () {
    if (xhr2.status === 200) {
        var d2 = xhr2.responseText;
        var jsonResponse = JSON.parse(d2);
        var distance = jsonResponse["activities-distance"][0].value;
        var key = "distance";
        var obj = {};
        obj[key] = distance;
        response.push(obj);
        console.log("distance:", distance);


    }
};
xhr2.send();

var xhr3 = new XMLHttpRequest();
xhr3.open('GET', 'https://api.fitbit.com/1/user/' + userId + '/activities/activityCalories/date/today/1d.json');
xhr3.setRequestHeader("Authorization", 'Bearer ' + access_token);
xhr3.onload = function () {
    if (xhr3.status === 200) {
        var d3 = xhr3.responseText;
        var jsonResponse = JSON.parse(d3);
        var calories = jsonResponse["activities-activityCalories"][0].value;
        var key = "calories";
        var obj = {};
        obj[key] = calories;
        response.push(obj);

        console.log("calories:", calories);
        //document.write(xhr2.responseText);
    }
};
xhr3.send();

var xhr4 = new XMLHttpRequest();
xhr4.open('GET', 'https://api.fitbit.com/1/user/' + userId + '/activities/minutesVeryActive/date/today/1d.json');
xhr4.setRequestHeader("Authorization", 'Bearer ' + access_token);
xhr4.onload = function () {
    if (xhr4.status === 200) {
        var d4 = xhr4.responseText;
        var jsonResponse = JSON.parse(d4);
        var minutes = jsonResponse["activities-minutesVeryActive"][0].value;
        var key = "minutes";
        var obj = {};
        obj[key] = minutes;
        response.push(obj);

        console.log("minutes:", minutes);

    }
};

xhr4.send();