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

The `else` Clause

Conditional Statements have an optional else clause which can be used to specify a block of code to be executed in case the boolean expression evaluates to false.

The syntax is as follows:

js

This way we don't need to write multiple if-statements to check for opposite conditions, making the code shorter and neater.


              1234567
            
let age = 18;

if(age >= 18) {
  console.log("The user is old enough to drive.");
} else {
  console.log("The user is not old enough to drive");
}

In the code above, we simply used an else block instead of rewriting a separate if-statement.

Alt var klart?

Takk for tilbakemeldingene dine!

Seksjon 3. Kapittel 7

Spør AI

Spør om hva du vil, eller prøv ett av de foreslåtte spørsmålene for å starte chatten vår

Kursinnhold

Introduction to JavaScript

1. Getting Started

2. Manipulating Data

3. Conditional Statements

4. Mastering Functions

5. Exploring Arrays

6. Discovering Loops

The `else` Clause

Conditional Statements have an optional else clause which can be used to specify a block of code to be executed in case the boolean expression evaluates to false.

The syntax is as follows:

js

This way we don't need to write multiple if-statements to check for opposite conditions, making the code shorter and neater.


              1234567
            
let age = 18;

if(age >= 18) {
  console.log("The user is old enough to drive.");
} else {
  console.log("The user is not old enough to drive");
}

In the code above, we simply used an else block instead of rewriting a separate if-statement.

Alt var klart?

Takk for tilbakemeldingene dine!

Seksjon 3. Kapittel 7

Introduction to JavaScript

The `else` Clause

1. What is the purpose of the `else` clause in an if-else statement?

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

3. What happens if the `if` condition evaluates to `true`?

Introduction to JavaScript

The `else` Clause

1. What is the purpose of the `else` clause in an if-else statement?

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

3. What happens if the `if` condition evaluates to `true`?

Introduction to JavaScript

The `else` Clause

1. What is the purpose of the else clause in an if-else statement?

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

3. What happens if the if condition evaluates to true?

Introduction to JavaScript

The `else` Clause

1. What is the purpose of the else clause in an if-else statement?

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

3. What happens if the if condition evaluates to true?

1. What is the purpose of the `else` clause in an if-else statement?

3. What happens if the `if` condition evaluates to `true`?

1. What is the purpose of the `else` clause in an if-else statement?

3. What happens if the `if` condition evaluates to `true`?