Function declaration in Javascript - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to declare a function named greet.

Javascript

function [1]() {
  console.log('Hello!');
}

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

Agreet

BsayHello

Chello

Dwelcome

Attempts:

3 left

💡 Hint

Common Mistakes

Using a different function name than 'greet'.

Missing the function name entirely.

The function name should be greet as requested.

2fill in blank

medium

Complete the code to declare a function named add that takes two parameters.

Javascript

function [1](a, b) {
  return a + b;
}

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

Aplus

Bsum

Ccalculate

Dadd

Attempts:

3 left

💡 Hint

Common Mistakes

Using a different function name like 'sum' or 'plus'.

Forgetting to include parameters.

The function should be named add as per the instruction.

3fill in blank

hard

Fix the error in the function declaration to make it valid.

Javascript

function [1](name) {
  console.log('Hi, ' + name);
}

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

Agreet

Bgreet1

C1greet

Dgreet-name

Attempts:

3 left

💡 Hint

Common Mistakes

Starting the function name with a number.

Using hyphens in the function name.

Function names cannot start with a number or contain hyphens. greet is a valid name.

4fill in blank

hard

Fill both blanks to declare a function named multiply that returns the product of two numbers.

Javascript

function [1](x, y) {
  return x [2] y;
}

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

Amultiply

B+

C*

Dadd

Attempts:

3 left

💡 Hint

Common Mistakes

Using addition operator instead of multiplication.

Using incorrect function names.

The function name should be multiply and the operator for multiplication is *.

5fill in blank

hard

Fill all three blanks to declare a function named greetUser that takes a name and returns a greeting message.

Javascript

function [1]([2]) {
  return `Hello, $[3]!`;
}

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

AgreetUser

BuserName

Dname

Attempts:

3 left

💡 Hint

Common Mistakes

Using different names for the parameter and inside the template string.

Using incorrect function names.

The function name is greetUser. The parameter is name, and the template uses name to greet.