Kursinnhold

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

Comparison Operators

Definition

Comparison Operators, as expressed by the name, are operators that can be used for comparing data.

For example, we can use the equals to (==) operator to check if two values are equal. This outputs true or false based on whether the two values are equal or not.


              123
            
let a = 5;
let b = 10;
console.log(a == b);

The expression a == b is known as a boolean expression because it evaluates into a boolean value (true or false).

Note

The equals to operator (==) is not the same as the assignment operator (=).

There's a similar operator known as the not equals to (!=) operator. It simply returns true if the two values are not equal:


              123
            
let a = 5;
let b = 10;
console.log(a != b);

There are some other operators which can be used for comparing values:

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Seksjon 3. Kapittel 1

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Kursinnhold

Introduction to JavaScript

1. Getting Started

2. Manipulating Data

3. Conditional Statements

4. Mastering Functions

5. Exploring Arrays

6. Discovering Loops

Comparison Operators

Definition

Comparison Operators, as expressed by the name, are operators that can be used for comparing data.

For example, we can use the equals to (==) operator to check if two values are equal. This outputs true or false based on whether the two values are equal or not.


              123
            
let a = 5;
let b = 10;
console.log(a == b);

The expression a == b is known as a boolean expression because it evaluates into a boolean value (true or false).

Note

The equals to operator (==) is not the same as the assignment operator (=).

There's a similar operator known as the not equals to (!=) operator. It simply returns true if the two values are not equal:


              123
            
let a = 5;
let b = 10;
console.log(a != b);

There are some other operators which can be used for comparing values:

Alt var klart?

Takk for tilbakemeldingene dine!

Seksjon 3. Kapittel 1

Introduction to JavaScript

Comparison Operators

1. What will be the output of the following code?

2. Which of the following operators checks if two values are equal?

3. What is the difference between `=` and `==` in JavaScript?

4. What will be the output of this code?

5. Which of the following statements will return `true` ?

Introduction to JavaScript

Comparison Operators

1. What will be the output of the following code?

2. Which of the following operators checks if two values are equal?

3. What is the difference between `=` and `==` in JavaScript?

4. What will be the output of this code?

5. Which of the following statements will return `true` ?

Introduction to JavaScript

Comparison Operators

1. What will be the output of the following code?

2. Which of the following operators checks if two values are equal?

3. What is the difference between = and == in JavaScript?

4. What will be the output of this code?

5. Which of the following statements will return true ?

Introduction to JavaScript

Comparison Operators

1. What will be the output of the following code?

2. Which of the following operators checks if two values are equal?

3. What is the difference between = and == in JavaScript?

4. What will be the output of this code?

5. Which of the following statements will return true ?

3. What is the difference between `=` and `==` in JavaScript?

5. Which of the following statements will return `true` ?

3. What is the difference between `=` and `==` in JavaScript?

5. Which of the following statements will return `true` ?