What execution context is in Javascript - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to declare a variable inside a function.

Javascript

function greet() {
  let message = [1];
  console.log(message);
}
greet();

Drag options to blanks, or click blank then click option'

Aconsole.log

BHello

C"Hello!"

Dfunction

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting quotes around the string

Using a keyword instead of a string

The variable message needs to be assigned a string value. Strings must be in quotes.

2fill in blank

medium

Complete the code to create a new execution context by calling a function.

Javascript

function showNumber() {
  console.log(5);
}
[1]();

Drag options to blanks, or click blank then click option'

AshowNumber

Bconsole

Cfunction

Dnumber

Attempts:

3 left

💡 Hint

Common Mistakes

Using a keyword like 'function' instead of the function name

Forgetting the parentheses after the function name

Calling the function showNumber() creates a new execution context.

3fill in blank

hard

Fix the error in the code to correctly access a variable inside the execution context.

Javascript

function count() {
  let number = 10;
  console.log([1]);
}
count();

Drag options to blanks, or click blank then click option'

Anumber

BNumber

Ccount

Dnum

Attempts:

3 left

💡 Hint

Common Mistakes

Using a variable name that was not declared

Mixing uppercase and lowercase letters

The variable number is declared inside the function and must be accessed by its exact name.

4fill in blank

hard

Fill both blanks to create an execution context with a local variable and a condition.

Javascript

function checkAge(age) {
  if (age [1] 18) {
    return [2];
  }
  return "Too young";
}
console.log(checkAge(20));

Drag options to blanks, or click blank then click option'

A>=

B"Allowed"

C<

D"Denied"

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong comparison operator

Forgetting quotes around the return string

The condition checks if age is greater than or equal to 18, then returns "Allowed".

5fill in blank

hard

Fill all three blanks to create a function that returns a greeting with a name.

Javascript

function greetUser([1]) {
  let greeting = `Hello, [2]!`;
  return [3];
}
console.log(greetUser("Alice"));

Drag options to blanks, or click blank then click option'

Aname

B${name}

Cgreeting

Duser

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong variable names

Not using template string syntax correctly

The function takes name as a parameter, uses it inside a template string with ${name}, and returns the greeting variable.