Advanced js week4 mila

JS3-hw.js

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+//#1 Item array removal
+
+const names = [
+  "Peter",
+  "Ahmad",
+  "Yana",
+  "kristina",
+  "Rasmus",
+  "Samuel",
+  "Katrine",
+  "Tala",
+];
+
+const nameToRemove = names.indexOf("Ahmad");
+if (nameToRemove !== -1) {
+  names.splice(nameToRemove, 1);
+}
+
+console.log(names); 
+
+//#2 Calculate time to reach the destination in minutes
+
+const travelInformation = {
+  speed: 50,
+  destinationDistance: 432,
+};
+
+function calculateTravelTimeInMinutes(distance, speed) {
+  return (distance/speed) * 60;
+};
+
+console.log(
+  calculateTravelTimeInMinutes(
+    travelInformation.destinationDistance,
+    travelInformation.speed
+  )
+);
+
+
+
+const travelTimeInMinutes = calculateTravelTimeInMinutes(
+  travelInformation.destinationDistance,
+  travelInformation.speed
+);
+
+//Converted minutes into hours and minutes
+
+function calculateTravelTimeInHoursAndMinutes(totalMinutes) {
+  if (totalMinutes < 60) {
+    return `${totalMinutes} minutes`;
+  }
+  const hours = Math.floor(totalMinutes / 60); 
+  const minutes =  Math.round(totalMinutes % 60); 
+  return `${hours} hours ${minutes} minutes`;
+}
+console.log(calculateTravelTimeInHoursAndMinutes(travelTimeInInMinutes)
+); // 8 hours and 38 minutes
+
+//#3 Series duration of my life
+
+const seriesDurations = [
+  {
+    title: "Lost",
+    days: 3,
+    hours: 16,
+    minutes: 30,
+  },
+  {
+    title: "The Residence",
+    days: 0,
+    hours: 7,
+    minutes: 44,
+  },
+  {
+    title: "The The Queen's Gambit",
+    days: 0,
+    hours: 6,
+    minutes: 32,
+  },
+];
+
+//Calculate total series duration in minutes
+
+ let totalSeriesDurationInMinutes = 0;
+
+ for (const duration of seriesDurations) {
+   totalSeriesDurationInMinutes +=((duration.days*24*60)+(duration.hours *60)+duration.minutes);
+  }
+
+console.log(totalSeriesDurationInMinutes);
+
+// Convert Life span into minutes
+
+function convertLifeSpanYearsIntoMinutes(years) {
+  return (years*525600);//1 year = 525600 minutes
+}
+
+//Ask for age
+let  lifeSpanInYears = prompt("How old are you?");
+lifeSpanInYears = Number(lifeSpanInYears);
+
+function validateLifeSpanInput(lifeSpanInYears) {
+  if (isNaN(lifeSpanInYears) || lifeSpanInYears === "" || lifeSpanInYears == null) {
+    console.log("Please enter a valid number.");
+    return;
+  }
+
+const lifeSpanInMinutes = convertLifeSpanYearsIntoMinutes(lifeSpanInYears);
+
+//Calculate series duration as a percentage of life span
+function seriesDurationsOutOfLifeSpan(seriesMinutes, lifeSpanMinutes) {
+  return (seriesMinutes/lifeSpanMinutes) * 100;
+};
+
+console.log(
+    "Series duration as percentage of life span:",
+  seriesDurationsOutOfLifeSpan(
+   totalSeriesDurationInMinutes,
+   lifeSpanInMinutes
+  ).toFixed(2) + "%"
+);
+
+
+//#4 Note taking app
+
+//Save a note
+
+let notes = [];
+
+  function saveNote(content, id) {
+    if (content.trim() !== "") {
+      notes.push({ id, content })
+    }
+  }
+
+saveNote("Pick up groceries", 1);
+saveNote("Do laundry", 2);
+
+console.log("Current notes:", notes);
+
+//Get a note by id
+
+function getNote(id){ 
+  //Check if id is missing or not a number
+  if (id === undefined ||
+    typeof id !== "number") {
+    console.log("Error");
+    return;
+  }
+  //Loop to find the note with the id
+   for (let i = 0; i < notes.length; i++) {
+    if (notes[i].id === id) {
+      return notes[i]; // return the note object
+    }
+  }
+  //If the id is not found
+    return "Not found";
+  }
+
+const firstNote = getNote(1);
+console.log(firstNote); // {content: 'Pick up groceries', id: 1}
+
+//Log out notes
+
+function logOutNotesFormatted() {
+  for (let note of notes) { 
+    console.log(`The note with id: ${note.id}, has the following note text:${note.content}`);
+  }
+  }
+
+logOutNotesFormatted(); 
+
+//Delete a note
+
+//Keep undeleted notes
+function deleteNote(id) {
+    let newNotes = [];
+    for (let i = 0; i < notes.length; i++) {
+        if (notes[i].id !== id) {
+            newNotes.push(notes[i]);
+        }
+    }
+    notes = newNotes;
+
+
+}
+
+//#5 Adding an activity
+
+let activities = [
+  {
+    date: '23/7-18',
+    activity: 'Youtube',
+    duration: 30,
+  },
+  {
+    date: '24/7-18',
+    activity: 'Instagram',
+    duration: 40,
+  },
+  {
+    date: '25/7-18',
+    activity: 'Facebook',
+    duration: 50,
+  }
+];
+
+function addActivities(date, activity, duration) { 
+  activities.push({
+    date: date,
+    activity: activity,
+    duration: duration
+  });
+}
+
+addActivities('26/7-18', 'Twitter', 10);
+console.log(activities);
+
+
+//Calculate total Activity Duration
+
+function getTotalDuration() {
+
+  let totalActivitiesDurationInMinutes = 0;
+
+  for (const activity of activities) {
+    totalActivitiesDurationInMinutes += activity.duration;
+  }
+  return totalActivitiesDurationInMinutes;
+}
+
+//Show my status
+
+function showStatus() { 
+  const totalActivitiesDurationInMinutes = getTotalDuration();
+
+  if (totalActivitiesDurationInMinutes  === 0) {
+    return("Add some activities before calling showStatus");
+  }  
+
+  return (`You have added ${activities.length} activities. They amount to ${totalActivitiesDurationInMinutes} min. of usage.`)
+}
+JS
+console.log(showStatus());
+
+
+//Usage limit
+
+let timeToUseSmartphone = Number(prompt("How long can you use the smartphone?"));
+
+timeToUseSmartphone = Number(timeToUseSmartphone);
+
+function canUseMoreSmartphone(timeLimit, totalActivitiesDurationInMinutes) {
+
+    if  (totalActivitiesDurationInMinutes < timeLimit) {
+      console.log("You can use the smartphone!");
+    } else {
+      console.log("You have reached your limit, no more smartphoning for you!")
+    }
+}
+
+  canUseMoreSmartphone(timeToUseSmartphone, getTotalDuration());

JS4 HW/index.html

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+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>JS4-HW</title>
+</head>
+<body>
+    <h1>Hello</h1>
+    <script src="index.js"></script>
+</body>
+</html>

JS4 HW/index.js

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+const userName = "";
+
+const todoList = [];
+
+function getReply(command = "") {
+
+    if (command.toLowerCase().includes("hello my name is")) {
+        const userName = command.split(" ").pop();
+        return `Nice to meet you ${userName} `;
+    }
+
+    if (command.toLowerCase().includes("what is my name?")) {
+            if (userName != "") {
+                return (`Your name is ${userName}`)
+            } else { 
+                return ("Please, introduce yourself")
+            };
+    }
+
+    if ((command.toLowerCase().includes("todo")) &&
+        command.toLowerCase().includes("add")) {
+        const task = (command.substring("add ".length, command.length - " to my todo".length));
+        todoList.push(task);
+        return  `${task} added to your todo`;
+    }
+
+    if (command.toLowerCase().includes("what is on my todo")) {
+        return todoList;
+    }
+
+     if ((command.toLowerCase().includes("todo")) &&
+         (command.toLowerCase().includes("remove"))) {
+        const taskToRemove = command.substring("remove ".length, command.length - " from my todo".length);
+        if (todoList.includes(taskToRemove)) {
+            return "Removed " + todoList.splice(todoList.indexOf(taskToRemove), 1) + " from your todo";
+        } else { 
+            return "There is no such activity in todo."+ (todoList.indexOf(taskToRemove));   
+        }
+    }  
+
+    if ((command.includes("+")) ||
+        (command.includes("-")) ||
+        (command.includes("*")) ||
+        (command.includes("/"))) {
+        const mathExpression = command.split(" ");
+
+        if (mathExpression.length !== 3) {
+            return "Invalid math expression";
+        }
+        const a = Number(mathExpression[0]);
+        const operator = mathExpression[1];
+        const b = Number(mathExpression[2]);
+
+        if (Number.isNaN(a) && Number.isNaN(b)) {
+            return "Invalid numbers in expression";
+        } 
+        switch (operator) {
+            case "+":
+                return a + b;
+                break;
+
+            case "-":
+                return a - b;
+                break;
+
+            case "/":
+                if (b === 0) {
+                    return "Division by zero is not allowed";
+                }
+                return a / b;
+                break;
+
+            case "*":
+                return a * b;
+        }
+    }
+
+    if (command.toLowerCase().includes("what day is it today")) {
+        //respond with the date in a human readable format. ;
+        const date = new Date();
+        return date.getDate()+ " of " + date.toLocaleString('default', { month: 'long' }) + " " + date.getFullYear();
+    }
+
+    if (command.toLowerCase().includes("set a timer for")) {
+        const timeString = command.substring("set a timer for ".length, command.length - " minutes".length);
+        const time = Number(timeString);
+        return `Timer set for ${time} minutes`;
+    }
+
+    return ("Sorry, command is not recognized.");
+}
+
+console.log("What is my name?");
+console.log(getReply("What is my name?"));
+console.log("Hello my name is Benjamin");
+console.log(getReply("Hello my name is Benjamin"));
+console.log("What is my name?")
+console.log(getReply("What is my name?"));
+console.log("Add fishing to my todo");
+console.log(getReply("Add fishing to my todo"));
+console.log("Add singing in the shower to my todo");
+console.log(getReply("Add singing in the shower to my todo"));
+console.log("Add shopping to my todo");
+console.log(getReply("Add shopping to my todo"));
+console.log("What is on my todo?");
+console.log(getReply("What is on my todo?"));
+console.log("Remove fishing from my todo");
+console.log(getReply("Remove fishing from my todo"));
+console.log("Remove singing in the shower from my todo");
+console.log(getReply("Remove singing in the shower from my todo"));
+console.log("What is on my todo?");
+console.log(getReply("What is on my todo?"));
+console.log("What day is it today?");
+console.log(getReply("What day is it today?"));
+console.log("Set a timer for 5 minutes");
+console.log(getReply("Set a timer for 4 minutes"));
+console.log(getReply());
+console.log("3 + 3");
+console.log(getReply("3 + 3"));