Instructions

  • 1. Your final score will reflect your grasp of the concepts—approach each question with precision.
  • 2. Thoroughly review each solution before proceeding to ensure full understanding.
  • 3. Final results will be available after submission to provide insights into areas for further improvement.
  • 4. Maintain academic integrity—plagiarism undermines learning and professional growth.
  • 5. Once submitted, responses are final, so ensure you’re confident in your answers.
  • 6. These challenges are designed to test practical knowledge; apply your skills as you would in real-world scenarios.

All Problems

Question

Action

What is the output of the following code?

View

What will the following code output?

View

Which of the following variables will throw a ReferenceError if accessed before declaration?

View

What is the output of the following code?

View

What will the following code output?

View

What will the output of the following code be?

View

Which of the following will correctly demonstrate hoisting behavior?

View

What will the following code output?

View

In JavaScript, which of the following is hoisted?

View

What is the output of the following code?

View

What is the output of the following code?

<p>console.log(a);<br>var a = 5;<br><br></p>

5
undefined
Error
null

What will the following code output?

<p>function test() {<br>&nbsp; console.log(x);<br>&nbsp; var x = 10;<br>}<br>test();<br><br></p>

10
undefined
Error
null

Which of the following variables will throw a ReferenceError if accessed before declaration?

var
let
const
Both b and c

What is the output of the following code?

<p>console.log(typeof myFunc);<br>var myFunc = function() {};<br><br></p>

function
undefined
Error
null

What will the following code output?

<p>function foo() {<br>&nbsp; console.log(a);<br>}<br>foo();<br>var a = 5;<br><br></p>

5
undefined
Error
null

What will the output of the following code be?

<p>console.log(b);<br>let b = 10;<br><br></p>

10
undefined
ReferenceError
null

Which of the following will correctly demonstrate hoisting behavior?

Hoisting only applies to variable declarations, not initializations
Hoisting occurs only in function scopes
Hoisting applies to block-scoped variables as well
Hoisting can be disabled with strict mode

What will the following code output?

<p>console.log(z);<br>const z = 15;<br><br></p>

15
undefined
ReferenceError
null

In JavaScript, which of the following is hoisted?

Variable declarations only
Function declarations only
Both variable declarations and function declarations
Only let and const declarations

What is the output of the following code?

<p>function bar() {<br>&nbsp; console.log(a);<br>&nbsp; var a = 20;<br>}<br>bar();<br><br></p>

20
undefined
Error
null