JavaScript Quiz

Which of the following is the correct way to include an external JavaScript file in HTML?

• <script src="app.js"></script>
  
  

• <script href="app.js"></script>

• <link src="app.js"></link>
  
  

• <style src="app.js"></style>

Which of the following is the correct way to declare a variable in JavaScript?

• var x = 10;

• variable x = 10;

• x := 10;

• let 10 = x;

What will the result of the following code be? let a = 10 + "5";

• 15

• 105

• 50

• Undefined

Which operator is used to assign a value to a variable?

• ==

• ===

• =

• =>

What is the output of the following code? let age = 18; if (age >= 18) { console.log("You are an adult."); } else { console.log("You are a minor."); }

• "You are a minor."

• "You are an adult."

• Error

• Undefined

What will the result of this code be? let num = 7; if (num % 2 === 0) { console.log("Even number"); } else { console.log("Odd number"); }

• Even number

• Odd number

• Undefined

• Error

Which of the following is the correct way to define a function in JavaScript?

• function myFunction() { }

• def myFunction() { }

• func myFunction() { }

• create function myFunction() { }

What will the following function return? function add(a, b) { return a + b; } console.log(add(5, 3));

• 8

• 53

• 5+3

• Undefined

Which of the following represents a boolean value in JavaScript?

• "true"

• 1

• true

• 10

Where in an HTML file is it best to include the