Introduction To Website Development Technologies - JavaScript Decision Statements

The video tutorial introduces decision-making in programming, focusing on if and switch statements in JavaScript. It explains how real-life decision logic translates into programming constructs, detailing the syntax and use of if statements, including else and else if clauses. The tutorial also covers switch statements, illustrating their application with examples like grading systems. Key concepts include logical operators and the importance of syntax in avoiding errors.

What is the primary purpose of decision-making in programming?

• To store data in variables

• To make the code run faster

• To execute code in a random order

• To perform actions based on certain conditions

In JavaScript, what is the consequence of not closing a parenthesis in an 'if' statement?

• The code will run faster

• The code will execute without errors

• The code will automatically close the parenthesis

• A syntax error will occur

Which logical operator is used to check if two values are equivalent in JavaScript?

• ==

• !=

• =

• ===

Which of the following is NOT a logical operator in JavaScript?

• >

• !=

• <=

• ++

What is the purpose of the 'else' statement in JavaScript?

• To stop the execution of the program

• To execute code when the 'if' condition is false

• To execute code when the 'if' condition is true

• To repeat the 'if' condition

How can multiple conditions be handled in a single 'if' statement?

• By using multiple 'if' statements

• By using 'else if' and 'else' statements

• By using a 'for' loop

• By using a 'while' loop

What is a 'switch' statement primarily used for in JavaScript?

• To create loops

• To declare variables

• To perform arithmetic operations

• To handle multiple discrete values

What is the significance of indentation in JavaScript code?

• It is required for the code to execute

• It helps in organizing and reading the code

• It makes the code run faster

• It changes the logic of the code

In a 'switch' statement, what happens if the 'break' keyword is omitted?

• The program will crash

• The next case will automatically execute

• The default case will execute

• The switch statement will not run

What is the role of the 'default' case in a 'switch' statement?

• To execute when the last case is true

• To execute when the first case is true

• To execute when all other cases are false

• To execute when the switch statement is empty