JavaScript

Promises

const causeErrorWhilefetchingUserProfile = true;
const causeErrorWhilefetchingRecentActivity = true;
const causeErrorWhilefetchingNotificationSetting = false;

const fetchUserProfile = () => {
  return new Promise((resolve, reject) => {
    setTimeout(() => {
      if (causeErrorWhilefetchingUserProfile) {
        resolve({
          id: 1,
          name: "Sam Smith"
        });
      } else {
        reject("Failed to fetch user profile.");
      }
    }, 1500);
  });
};

const fetchRecentActivity = () => {
  return new Promise((resolve, reject) => {
    setTimeout(() => {
      if (causeErrorWhilefetchingRecentActivity) {
        resolve(["Logged in", "Updated profile", "Posted a comment"]);
      } else {
        reject("Failed to fetch recent activity.");
      }
    }, 1000);
  });
};

const fetchNotificationSettings = () => {
  return new Promise((resolve, reject) => {
    setTimeout(() => {
      if (causeErrorWhilefetchingNotificationSetting) {
        resolve({
          email: true,
          sms: false
        });
      } else {
        reject("Failed to fetch notification settings.");
      }
    }, 1700);
  });
};

fetchUserProfile()
  .then((profile) => console.log("User Profile:", profile))
  .catch((error) => console.error("Error fetching user profile:", error));

fetchRecentActivity()
  .then((activity) => console.log("Recent Activity:", activity))
  .catch((error) => console.error("Error fetching recent activity:", error));

fetchNotificationSettings()
  .then((settings) => console.log("Notification Settings:", settings))
  .catch((error) => console.error("Error fetching notification settings:", error));

const causeErrorWhilefetchingUserProfile = true;
const causeErrorWhilefetchingRecentActivity = true;
const causeErrorWhilefetchingNotificationSetting = true;

const fetchUserProfile = () => {
  return new Promise((resolve, reject) => {
    setTimeout(() => {
      if (causeErrorWhilefetchingUserProfile) {
        resolve({
          id: 1,
          name: "Sam Smith"
        });
      } else {
        reject("Failed to fetch user profile.");
      }
    }, 1000);
  });
};

const fetchRecentActivity = () => {
  return new Promise((resolve, reject) => {
    setTimeout(() => {
      if (causeErrorWhilefetchingRecentActivity) {
        resolve(["Logged in", "Updated profile", "Posted a comment"]);
      } else {
        reject("Failed to fetch recent activity.");
      }
    }, 1500);
  });
};

const fetchNotificationSettings = () => {
  return new Promise((resolve, reject) => {
    setTimeout(() => {
      if (causeErrorWhilefetchingNotificationSetting) {
        resolve({
          email: true,
          sms: false
        });
      } else {
        reject("Failed to fetch notification settings.");
      }
    }, 1700);
  });
};

Promise.all([fetchUserProfile(), fetchRecentActivity(), fetchNotificationSettings()])
  .then(([profile, activity, settings]) => {
    console.log("User Profile:", profile);
    console.log("Recent Activity:", activity);
    console.log("Notification Settings:", settings);
    console.log("Dashboard data loaded successfully!");
  })
  .catch((error) => {
    console.error("Failed to load dashboard data:", error);
  });