JavaScript Conditionals Quiz

What is the correct syntax for an if statement in JavaScript?

• if (x > 0) { }

• if x > 0: { }

• if x > 0 then { }

• if (x > 0) then { }

Which logical operator is used in JavaScript to represent "AND"?

• &&

• ||

• !

• ==

What will the following code output? ```javascript if (false || true) { console.log("True"); } else { console.log("False"); } ```

• True

• False

• Error

• Nothing

How can you write an if statement in JavaScript to execute some code if "x" is either greater than 10 or less than or equal to 20?

• if (x > 10 || x <= 20)

• if (x > 10 && x <= 20)

• if x > 10 or x <= 20

• if x > 10 and x <= 20

What is the output of the following code snippet? ```javascript let x = 5; if (x > 3) { if (x < 10) { console.log("Yes"); } } else { console.log("No"); } ```

• Yes

• No

• Error

• Nothing

What will the following JavaScript code output? ```javascript let age = 18; if (age > 18) { console.log("Adult"); } else if (age == 18) { console.log("Just an adult"); } else { console.log("Not an adult"); } ```

• Adult

• Just an adult

• Not an adult

• Error

In JavaScript, which logical operator represents the "OR" condition?

• &&

• ||

• !

• ==

Consider the following code: ```javascript let score = 90; if (score >= 90) { if (score === 100) { console.log("Perfect score"); } else { console.log("Great score"); } } else { console.log("Good score"); } ``` What will be printed if the score is 90?

• Perfect score

• Great score

• Good score

• No output

What does the "!" operator represent in JavaScript?

• AND

• OR

• NOT

• EQUAL

Which of the following is the correct way to write a nested conditional in JavaScript?

• if (x > 0) { if (y > 0) { console.log("Both positive"); } }

• if (x > 0) then (if y > 0 then console.log("Both positive"));

• if x > 0 { if y > 0 { console.log("Both positive") } }

• if (x > 0) then { if (y > 0) { console.log("Both positive") } }