JavaScript Conditional Logic Quiz

How can you combine multiple conditions using logical operators in JavaScript?

• You can combine multiple conditions using logical operators such as ^^ (AND) and ?? (OR) in JavaScript.

• You can combine multiple conditions using logical operators such as ?? (AND) and !! (OR) in JavaScript.

• You can combine multiple conditions using logical operators such as ^^ (AND) and !! (OR) in JavaScript.

• You can combine multiple conditions using logical operators such as && (AND) and || (OR) in JavaScript.

Consider the following code:

let age = 25;

if (age >= 18) {

console.log("You are eligible to vote.");

} else {

console.log("You are not eligible to vote.");

}

• • A. "You are eligible to vote."

• • B. "You are not eligible to vote."

• • C. An error message

• • D. The code will not execute

When is the else if statement used in JavaScript?

• The else if statement is used in JavaScript when you want to repeat a block of code multiple times.

• The else if statement is used in JavaScript when you want to skip a block of code.

• The else if statement is used in JavaScript when you want to check multiple conditions sequentially after an initial if statement.

• The else if statement is used in JavaScript when you want to end the program abruptly.

What is the purpose of the else statement in JavaScript conditional logic?

• To execute a block of code when the if condition is false.

• To repeat the if condition

• To execute a block of code randomly

• To skip the entire conditional block

Explain the concept of nested conditionals in JavaScript.

• Nested conditionals in JavaScript involve placing conditional statements inside other conditional statements to handle multiple conditions.

• Nested conditionals in JavaScript are used for styling web pages.

• Nested conditionals in JavaScript refer to combining multiple functions within a single conditional statement.

• Nested conditionals in JavaScript involve using loops within conditional statements.

How can logical operators be used in JavaScript conditional statements?

• Logical operators can be used to create compound conditions in if, and else if statements to make decisions based on multiple criteria.

• Logical operators can only be used in switch statements, not in if conditions.

• Logical operators can be used to define variables within conditional statements.

• Logical operators are used to concatenate strings in JavaScript conditional statements.

In JavaScript, how do you check if a number is greater than 10 using an if statement?

• if (number == 10) { // code block }

• if (number > 10) { // code block }

• if (number >= 10) { // code block }

• if (number < 10) { // code block }

Which of the following code snippets correctly checks if a number x is positive?

• x > 0
• x < 0
• x == 0
• x >= 0

Which of the following code snippets correctly checks if a string name is empty?

• if (name.length === 0)
• if (name === null)
• if (name === '')
• if (name === undefined)

Which of the following code snippets correctly checks if a variable num is even(two answers are correct)?

• num % 2 == 0
• num % 2 != 0
• num % 2 == 1
• num % 2 === 0