This course is an introduction to JavaScript for beginners, it focuses on JavaScript for web development. Learners will explore fundamental concepts using basic JavaScript programs.

JavaScript is a versatile language essential for web development, working alongside HTML and CSS to build both simple and complex web applications. This course offers a comprehensive introduction to JavaScript for beginners, starting with fundamental concepts like problem-solving and simple JavaScript programs. Through interactive exercises, challenges, and quizzes, learners will master control structures, loops, strings, arrays, and functions.
By the end of this course, you'll have solid problem-solving skills, a deep understanding of JavaScript programming, and practical experience in writing clean, efficient code. This knowledge will prepare you for a successful career as a JavaScript developer and significantly enhance your employability in the tech industry.

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The two-way decision has a true branch and a false branch.


The one-way decision has a true branch and a false branch.


The two-way decision has a branch labeled with `else`.


The one-way decision has a branch labeled with `else`.


**(Select all that apply.)** Which of the following statements are true?


(Select all that apply.) Which of the following statements are true?

Let’s say we have two integers input by the user in the variables `p` and `q`. Which of the following conditional expressions shows that `p` is a _multiple of_ `q`? 

(A number is a multiple of another number if its division gives an integer result.)



Let’s say we have two integers input by the user in the variables <code>p</code> and <code>q</code>. Which of the following conditional expressions shows that <code>p</code> is a multiple of <code>q</code>?
(A number is a multiple of another number if its division gives an integer result.)

**(Select all that apply.)** Let’s say we have an integer input by the user in the variable `num`. Which of the following conditional expressions show whether the integer is an odd number?

The rule is that a natural number not divisible by 2 is an _odd_ number.

(Select all that apply.) Let’s say we have an integer input by the user in the variable <code>num</code>. Which of the following conditional expressions show whether the integer is an odd number?
The rule is that a natural number not divisible by 2 is an odd number.

**(Select all that apply.)** Let’s say we have an integer input by the user in the variable `num`. Which of the following are the correct conditional expressions that show that the integer is a _multiple of $4$_?

(We know that a multiple of $4$ is always an _even_ number.)


(Select all that apply.) Let’s say we have an integer input by the user in the variable <code>num</code>. Which of the following are the correct conditional expressions that show that the integer is a multiple of <math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mn>4</mn></mrow><annotation encoding="application/x-tex">4</annotation></semantics></math>4?
(We know that a multiple of <math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mn>4</mn></mrow><annotation encoding="application/x-tex">4</annotation></semantics></math>4 is always an even number.)

**(Select all that apply.)** Let’s say we have an integer input by the user in the variable `num`. Our program calculates and stores the number of factors of `num` to another variable, `nfact`. Which of the following conditional expressions show that the integer is _not_ a prime number?

The rule is that a number is prime if it is divisible only by itself and by 
$1$.


(Select all that apply.) Let’s say we have an integer input by the user in the variable <code>num</code>. Our program calculates and stores the number of factors of <code>num</code> to another variable, <code>nfact</code>. Which of the following conditional expressions show that the integer is not a prime number?
The rule is that a number is prime if it is divisible only by itself and by
<math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mn>1</mn></mrow><annotation encoding="application/x-tex">1</annotation></semantics></math>1.

`n % 2 == 1 AND n % 3 == 1 AND n % 4 == 1 AND n % 5 == 1 AND n % 6 == 1 AND n % 7 == 0`


`n % 2 == 1 OR n % 3 == 1 OR n % 4 == 1 OR n % 5 == 1 OR n % 6 == 1 AND n % 7 == 0`

`n % 2 == 1 OR n % 3 == 1 OR n % 4 == 1 OR n % 5 == 1 OR n % 6 == 1 OR n % 7 == 0`

`n % 2 == 1 AND n % 3 == 1 AND n % 4 == 1 AND n % 5 == 1 AND n % 6 == 1 OR n % 7 == 0`

When distributing `n`  number of coins among $2$, $3$, $4$, $5$, or $6$ persons, $1$ coin is left over. But when distributed among $7$ persons, they are distributed equally. Which of the following conditional expressions correctly tests the value of `n`?


When distributing <code>n</code> number of coins among <math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mn>2</mn></mrow><annotation encoding="application/x-tex">2</annotation></semantics></math>2, <math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mn>3</mn></mrow><annotation encoding="application/x-tex">3</annotation></semantics></math>3, <math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mn>4</mn></mrow><annotation encoding="application/x-tex">4</annotation></semantics></math>4, <math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mn>5</mn></mrow><annotation encoding="application/x-tex">5</annotation></semantics></math>5, or <math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mn>6</mn></mrow><annotation encoding="application/x-tex">6</annotation></semantics></math>6 persons, <math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mn>1</mn></mrow><annotation encoding="application/x-tex">1</annotation></semantics></math>1 coin is left over. But when distributed among <math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mn>7</mn></mrow><annotation encoding="application/x-tex">7</annotation></semantics></math>7 persons, they are distributed equally. Which of the following conditional expressions correctly tests the value of <code>n</code>?

Test your knowledge of decisions and branching.

About the Course

JavaScript Basics

Loops in JavaScript

JavaScript Arrays and Strings

JavaScript Functions

Wrap Up