Kursinnehåll

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

Dealing with Numbers

Summary

Textual data is always enclosed in single or double quotation marks.
For example: 'Hello World' or "Hello World" — both represent valid textual data;
There are two different types of numbers in JavaScript:
- Integers;
- Floating-point numbers;
Floating-point numbers (also known as Floats) are numerical values that have a decimal part.
Examples: 1.234, 24.56, 3.1415, etc;
Negative numbers can be expressed by adding a minus (-) sign before the number. Examples: -27, -3.14, -123, etc;
Arithmetic operations can be performed on numbers using the following operators:
+, -, *, /, and **;
The order of arithmetic operations follows the basic rule of arithmetic (BODMAS or PEMDAS rules).


              12345678910111213
            
// Integer
console.log('Integer:', 42);

// Floating-Point Number
console.log('Floating-Point:', 3.14);

// Negative Number
console.log('Negative:', -27);

// Arithmetic Operations
console.log('Sum:', 42 + 3.14);

console.log('Product:', 42 * -27);

Var allt tydligt?

Tack för dina kommentarer!

Avsnitt 1. Kapitel 4

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Kursinnehåll

Introduction to JavaScript

1. Getting Started

2. Manipulating Data

3. Conditional Statements

4. Mastering Functions

5. Exploring Arrays

6. Discovering Loops

Dealing with Numbers

Summary

Textual data is always enclosed in single or double quotation marks.
For example: 'Hello World' or "Hello World" — both represent valid textual data;
There are two different types of numbers in JavaScript:
- Integers;
- Floating-point numbers;
Floating-point numbers (also known as Floats) are numerical values that have a decimal part.
Examples: 1.234, 24.56, 3.1415, etc;
Negative numbers can be expressed by adding a minus (-) sign before the number. Examples: -27, -3.14, -123, etc;
Arithmetic operations can be performed on numbers using the following operators:
+, -, *, /, and **;
The order of arithmetic operations follows the basic rule of arithmetic (BODMAS or PEMDAS rules).


              12345678910111213
            
// Integer
console.log('Integer:', 42);

// Floating-Point Number
console.log('Floating-Point:', 3.14);

// Negative Number
console.log('Negative:', -27);

// Arithmetic Operations
console.log('Sum:', 42 + 3.14);

console.log('Product:', 42 * -27);

Var allt tydligt?

Tack för dina kommentarer!

Avsnitt 1. Kapitel 4

Introduction to JavaScript

Dealing with Numbers

Summary

1. Which of the following is the correct way to represent textual data?

2. Which of the following is NOT a valid number type?

3. Which of the following represents a Floating-Point Number?

4. Which of the following represents a negative number?

5. How would you multiply two numbers?

Introduction to JavaScript

Dealing with Numbers

Summary

1. Which of the following is the correct way to represent textual data?

2. Which of the following is NOT a valid number type?

3. Which of the following represents a Floating-Point Number?

4. Which of the following represents a negative number?

5. How would you multiply two numbers?