Kursusindhold

Introduction to JavaScript

1. Getting Started

First Javascript Console Application Challenge: Showing some Output Challenge: Outputing Multiple Lines Dealing with Numbers Challenge: Working with Numbers Challenge: Calculating the Speed of a Car Challenge: Calculating Area of a Trapezium Outputting Multiple Values Challenge: Consoling Meaningful Output How to Use Comments in Javascript?Challenge: Adding a Comment Multi-Line Comments Challenge: Commenting out Code What Is JavaScript anyway?

2. Manipulating Data

Storing Data Challenge: Declaring a Variable Challenge: Accessing Data From a Variable Challenge: Fixing Variable Names Challenge: Reassigning a Variable Constants Challenge: Declaring & Using Constants Performing Arithmetic On Variables Challenge: Making a Salary Calculator Challenge: Adjusting Salary with a Bonus Exploring Primitive Data Types Challenge: Declaring a Boolean Value How different Data Types Interact Challenge: Concatenating Strings Challenge: Creating User Profile & Activity Details

3. Conditional Statements

Comparison Operators Challenge: Checking Age Eligibility The `if` Statement Challenge: Weather-Based Outfit Recommender Challenge: Even or Odd Nested Conditional Statements The `else` Clause Challenge: Improving Even or Odd Checker Challenge: Temperature Advisor The `else if` Clause Challenge: Grade Categorizer ` AND` Logical Operator Challenge: Checking if a Number is Even and Positive OR Logical Operator Challenge: Accessing Control System

4. Mastering Functions

What Are Functions?Challenge: Simple Function Challenge: Calculating the Speed of a Car Scopes Passing Data into Functions Challenge: Fixing the Speed Function Challenge: Improving the Grade Categorizer Task: Defining a Compound Function Returning Data from Functions Default Values Challenge: Email Auto-Responder with Default Parameters

5. Exploring Arrays

What Are Arrays?Challenge: Defining An Array Challenge: Indexing Adding Values to an Array Challenge: Pushing Elements to an Array Removing Elements from an Array Challenge: Practicing `pop` & `shift`The `length` Property Challenge: Counting Elements The `includes` Method Challenge: Searching for Animals in the Zoo

6. Discovering Loops

The `for` Loop Task: Printing a Sequence The `while` Loop Challenge: Printing Fibonacci Sequence The `do-while` Loop Challenge: Random Multiple of 7 Using Loops with Arrays Challenge: Finding the Average Price of Items Summary

The `while` Loop

The while loop is another kind of loop supported by most programming languages including JavaScript.

The while loop is mainly used when we want to execute a block of code as long as a condition is true. Although it may behave similar to a for loop in certain circumstances, it is mainly used in cases where we don't know exactly how many times a block of code needs to be executed.

The general syntax of a while loop is:


python

Note

If the condition of a while loop is always true, it will execute forever. Such a loop is known as an infinite loop.

The process of a while loop can be better understood by looking at it's flowchart:

Following is an example program which utilizes a while loop to find the first number that is divisible by both 11 and 12:


              123456
            
let i = 13;
while(i % 11 != 0 && i % 12 != 0) {
  i += 1;
}

console.log("The first number divisible by both 11 and 12 is:", i);

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Sektion 6. Kapitel 3

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Kursusindhold

Introduction to JavaScript

1. Getting Started

2. Manipulating Data

3. Conditional Statements

4. Mastering Functions

5. Exploring Arrays

6. Discovering Loops

The `while` Loop

The while loop is another kind of loop supported by most programming languages including JavaScript.

The general syntax of a while loop is:


python

Note

If the condition of a while loop is always true, it will execute forever. Such a loop is known as an infinite loop.

The process of a while loop can be better understood by looking at it's flowchart:

Following is an example program which utilizes a while loop to find the first number that is divisible by both 11 and 12:


              123456
            
let i = 13;
while(i % 11 != 0 && i % 12 != 0) {
  i += 1;
}

console.log("The first number divisible by both 11 and 12 is:", i);

Var alt klart?

Tak for dine kommentarer!

Sektion 6. Kapitel 3

Introduction to JavaScript

The `while` Loop

1. What is the main difference between a `for` loop and a `while` loop?

2. How many times will the following loop execute?

3. What will happen if the condition in a `while` loop is always true?

Introduction to JavaScript

The `while` Loop

1. What is the main difference between a `for` loop and a `while` loop?

2. How many times will the following loop execute?

3. What will happen if the condition in a `while` loop is always true?

Introduction to JavaScript

The `while` Loop

1. What is the main difference between a for loop and a while loop?

2. How many times will the following loop execute?

3. What will happen if the condition in a while loop is always true?

Introduction to JavaScript

The `while` Loop

1. What is the main difference between a for loop and a while loop?

2. How many times will the following loop execute?

3. What will happen if the condition in a while loop is always true?

1. What is the main difference between a `for` loop and a `while` loop?

3. What will happen if the condition in a `while` loop is always true?

1. What is the main difference between a `for` loop and a `while` loop?

3. What will happen if the condition in a `while` loop is always true?