Js1 week4 update lesson plan

javascript1/week4/exercises/level0.md

@@ -0,0 +1,131 @@
+
+
+
+
+# Warm-up Exercises
+> [!IMPORTANT]
+> These warm-up exercises are designed to ease you into the material. You don't need to complete all of them; instead, choose 1-2 sections that interest you and work on those. When you're ready for more challenging tasks, proceed to the [Level 1 exercises](./level1.md).
+
+## 🎓 0.1 Running your Javascript
+There are two main ways of running Javascript: Via the Browser or through the terminal using `node`
+1. Create a `.js` file which logs:
+    * A regular log: `Hello World`
+    * A warning log: `Something is about to happen...`
+    * An error log: `KABOOOOM`
+2. Run a script through the Browser
+    * Create a HTML file which include the javascript file
+    * Run the HTML file in the Browser
+    * Open the Developer Tools to see your logs
+3. Run the script via Node
+    * Check if node is installed by running `node -v`. If it doesn't understand the command you have to [install Node](https://nodejs.org/en/download)
+    * Open the Terminal in VS Code
+    * Run the javascript file using the command `node <path to your file>`. <br>
+    For instance `node ./script.js`
+
+## 🧱🔎 0.2 Variables & Scope
+1. Declare three variables: `name`, `age`, and `isStudent`. Assign appropriate values to them.
+2. Can you help me fix my code?
+    ``` js
+    const name = "Alice";
+    const age = 16;
+    const country = "USA";
+    const message = "";
+    const status = "";
+
+    if (age < 18) {
+        status = "minor";
+    } else {
+        status = "adult";
+    }
+
+    message = `${name} is a ${status} from ${country}.`;
+
+    console.log(message); // Alice is a minor from USA.
+    ```
+3. Why is my code not working?
+    ```js
+    const canSee = true;
+    if (canISee) {
+        let room = "This room is not dark";
+    }
+    else {
+        room = "This room is pitch black";
+    }
+    console.log(room);
+    ```
+
+
+## 🧱✨ 0.3 Data types
+1. Define variables with different data types (string, number, boolean, undefined, null, object, array). They should all be something you may have for your team.
+    ```js
+    const team = "Team 31";
+    // add more variables here...
+    ```
+2. Use `typeof` to check and print the type of each variable.
+3. Guess the output, then run the code to see if you got it right.
+    ```js
+    const a = 10;
+    const b = -10;
+    const c = "100"
+    const d = "no";
+    const e = true;
+    const f = false;
+    const g = null;
+
+    console.log("#1", a + a, typeof (a + a)); // output is "#1 20 number"
+
+    // guess the output of the following statements
+    console.log("#2", a + b, typeof (a + b)); 
+    console.log("#3", a + c, typeof (a + c));
+    console.log("#4", a + d, typeof (a + d));
+    console.log("#5", a + e, typeof (a + e));
+    console.log("#6", a + f, typeof (a + f));
+    console.log("#7", a + g, typeof (a + g));
+    ```
+
+
+## 🧱 0.4 Conditions
+1. Write a function that takes a user’s age as input and prints whether they are a child (0-12), a teenager (13-19), or an adult (20+).
+2. Create a function that asks for a number and prints whether it is positive, negative, or zero.
+3. Write a function that checks if a given year is a leap year (Hint: A leap year is divisible by 4).
+
+
+
+## 🧱 0.5 Loops
+1. Print numbers from 1 to 10 using a for loop.
+2. Print a countdown from 10 to 1 using a for loop.
+2. Print even numbers between 1 and 20 using a for loop.
+4. Use a for...of loop to print each value in this array:
+    ```js
+    const names = ["john", "jane", "joe"];
+    ```
+
+
+## 🧱 0.6 Arrays
+1. Create an array of five favorite foods and print each item using a for..of loop.
+1. Write a function that takes an array of numbers and returns the sum of all elements. What is the sum of `[5, 10, -98, 17.5, 365, -2.5]`?
+1. Given an array `[10, 20, 30, 40, 50]`, write code to remove the last element and add 60 at the end.
+1. Write a function that finds the largest number in an array
+
+
+
+## 🧱 0.7 Objects
+1. Create an object representing a book with properties: `title`, `author`, and `yearPublished`.
+2. Write a function that takes a book object and returns a string: `{title} by {author}, published in {yearPublished}`.
+3. Add a method getAge to the book object that returns how old the book is based on the current year.
+4. Write a function that takes an array of book objects and returns an array of all book titles.
+
+
+## 🧱 0.8 Functions
+1. Write a function `greet` that takes a name as a parameter and returns a greeting message
+    ```js
+    console.log(greet("Alice")); // "Hello, Alice!"
+    ```
+2. Write a function `add` that takes two numbers and returns their sum.
+    ```js
+    console.log(add(5, 3)); // 8
+    ```
+3. Write a function `square` that returns the square of a number. Then, write another function `sumOfSquares` that takes two numbers and returns the sum of their squares.
+    ```js
+    console.log(sumOfSquares(3, 4)); // 25 (3² + 4² = 9 + 16)
+    ```