IF Statement Worksheet
Question 1
Why is an IF statement known as a control structure?
An IF statement is called a control structure because it controls the flow of a program based on a condition.
It allows the program to make decisions and execute specific blocks of code depending on whether a condition evaluates to true or false.
Question 2
There are other control structures in JavaScript that we'll be learning about soon. Use your google skills to look up the other control structures in JavaScript and list them below.
Other JavaScript control structures include: switch for multi-way branching, for, while, and do...while loops, break and continue for flow control, and try...catch for error handling.
Question 3
What is a boolean expression?
A boolean expression is a logical statement that evaluates to either true or false. It typically involves comparison operators (e.g., ==, !=, <, >) or logical operators (e.g., &&, ||, !).
let age = 18;
console.log(age >= 18); // This boolean expression evaluates to true
Question 4
What is the 'equality operator', and what is it used for? How is it different from the assignment operator?
The equality operator (==) is used to compare two values for equality, and it returns true if the values are equal, regardless of their types. For example:
5 == "5"; // true, because both values are equal, even though the types are different
The assignment operator (=), on the other hand, is used to assign a value to a variable. For example:
let age = 25; // Assigns the value 25 to the variable 'age'
Question 5
Why is it important to properly indent your code when writing IF statements?
Indentation improves readability, organizes structure, aids debugging, encourages collaboration, and aligns with coding best practices.
Question 6
What is a code block in JavaScript?
A code block in JavaScript is a group of statements enclosed within curly braces {}. It defines a section of code that should be treated as a single unit, often used with control structures like if, else, for, or functions.
if (true) {
console.log("This is a code block!"); // Statement inside a code block
}
Coding Problems
Coding Problems - See the 'script' tag below this h3 tag. You will have to write some JavaScript code in it.
Always test your work! Check the console log to make sure there are no errors.