The Modern JavaScript Bootcamp (2019) - If Statements

This video tutorial introduces the concept of if statements in JavaScript, explaining their syntax and usage for conditional code execution. It covers setting up basic if statements, using Boolean values, simplifying conditions, and adding multiple if statements. The tutorial concludes with a challenge to create if statements for child and senior discounts, reinforcing the importance of conditional programming in real-world applications.

What is the primary purpose of an if statement in programming?

• To define variables

• To execute code unconditionally

• To repeat code multiple times

• To conditionally execute code based on a condition

Which keyword is used to start an if statement in JavaScript?

• switch

• for

• if

• while

In an if statement, where do you place the condition to be evaluated?

• Inside angle brackets

• Inside parentheses

• Inside square brackets

• Inside curly braces

What will happen if the condition in an if statement evaluates to false?

• The code block will not execute

• The program will terminate

• The code block will execute

• An error will occur

What is the purpose of using indentation in code blocks?

• To make the code run faster

• To make the code easier to read

• To reduce the file size

• To add comments

What is the term used to describe controlling the flow of a program using if statements?

• Loop control

• Variable control

• Flow control

• Function control

How can you simplify an if statement that checks if a variable is true?

• By directly placing the condition in the parentheses

• By using a loop

• By using a switch statement

• By removing the condition

What condition would you use to check if a temperature is above 110 degrees?

• temp < 110

• temp > 110

• temp <= 110

• temp == 110

In the age-based pricing challenge, what age qualifies for a child discount?

• 7 or under

• 8 or under

• 5 or under

• 6 or under

What age qualifies for a senior discount in the age-based pricing challenge?

• 75 or older

• 70 or older

• 65 or older

• 60 or older