Bryant's finished lab

bryantferguson/src/js-data-types-lab/lab.js

@@ -0,0 +1,147 @@
+// Practice 1 
+let fullName = "Bryant Ferguson"
+console.log(fullName.length);
+console.log(fullName.toUpperCase());
+console.log(fullName.includes("Ferguson"));
+let firstName = fullName.split(" ");
+console.log(firstName[0]);
+
+// Practice 1 Mini Challenge
+function helloName(name) {
+    return "Hello, " + name + "!";
+}
+
+helloName("Bryant");
+
+// .length gets the length of string or an array
+// .includes() returns a boolean on whether a certain value is in a string
+// .slice() returns a portion of a string based on the substring range
+
+// Practice 2
+
+let num1 = 10;
+let num2 = 3;
+
+console.log(num1 + num2);  // addition
+console.log(num1 - num2 ); // subtraction
+console.log(num1 * num2);  // multiplication
+console.log(num1 / num2 ); // division
+console.log(num1 % num2);  // remainder
+let num = Math.floor(Math.random() * 10) + 1;
+console.log("random num " + num);
+
+function evenOrOdd(number){
+    if(number % 2 == 0){
+        return true;
+    }
+    return false;
+}
+
+console.log(evenOrOdd(11));
+
+//% is the remainder after the dvision
+//math random returns a random number based on the name
+//math floor rounds a number down to the nearest whole number
+
+// Practice 3 
+let students = ["A", "B", "C", "D"];
+for(let i=0; i<students.length; i++){
+    console.log(students[i]);
+}
+
+students.push("F");
+students.pop();
+console.log(students.length);
+
+function sumArray(numbers) {
+  let sum = 0;
+
+  for (let i = 0; i < numbers.length; i++) {
+    sum += numbers[i];
+  }
+
+  return sum;
+}
+
+console.log(sumArray([10, 1, 1, 1])); 
+
+//you access an array element by using []
+//.push() adds an item to the end of the list
+//we use loops with arrays to traverse
+
+let car = {
+  brand: "Toyota",
+  model: "Camry",
+  year: 2020
+};
+
+console.log(car.brand);
+console.log(car.model);
+console.log(car.year);
+
+car.year = 2024;
+console.log(car.year);
+
+car.color = "yellow";
+console.log(car.color);
+
+for (let key in car) {
+  console.log(key + ": " + car[key]);
+}
+
+function describePerson(person) {
+  return person.name + " is " + person.age + " years old";
+}
+
+let person = {
+  name: "Bryant",
+  age: 23
+};
+console.log(describePerson(person));
+describePerson(person)
+
+//keys are used to access values in objects, values are the data that corespend to unique key
+// you access object data using keys
+// you would use an object over an array when you have multiple fields since arrays only hold one type
+
+let student = {
+  name: "Bryant",
+  scores: [100, 90, 80, 69]
+};
+
+// Final Challenge
+function calculateAverage(scores) {
+  let sum = 0;
+
+  for (let i = 0; i < scores.length; i++) {
+    sum += scores[i];
+  }
+
+  return sum / scores.length;
+}
+
+function getFinalGrades(average) {
+  if (average >= 90) {
+    return "A";
+  } else if (average >= 80) {
+    return "B";
+  } else if (average >= 70) {
+    return "C";
+  } else if (average >= 60) {
+    return "D";
+  } else {
+    return "F";
+  }
+}
+
+let average = calculateAverage(student.scores);
+let grade = getFinalGrades(average);
+
+console.log("Name: " + student.name);
+console.log("Average: " + average);
+console.log("Grade: " + grade);
+
+//Strings are the easiest data type for me
+//Arrays are the most confusing for me
+//Arrays are collection of values of the same data type, objects have multiple different fields that can be different data types
+// You would use arrays when grouping data of the same type, you would objects when grouping data with mutiple different fields that need to be grouped together