Variable declaration using var in Javascript - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to declare a variable named age using var.

Javascript

var [1] = 25;

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

Anumber

Blet

Cconst

Dage

Attempts:

3 left

💡 Hint

Common Mistakes

Using keywords like let or const instead of the variable name.

Using a number or type instead of a variable name.

Use var followed by the variable name age to declare it.

2fill in blank

medium

Complete the code to declare a variable named name and assign it the value 'Alice' using var.

Javascript

var [1] = 'Alice';

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

Alet

Bconst

Cname

Dstring

Attempts:

3 left

💡 Hint

Common Mistakes

Using let or const instead of the variable name.

Using a type name like string instead of the variable name.

The variable name should be name to store the string 'Alice'.

3fill in blank

hard

Fix the error in the code by completing the variable declaration with var.

Javascript

[1] score = 100;

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

Avar

Blet

Cconst

Dscore

Attempts:

3 left

💡 Hint

Common Mistakes

Omitting the keyword var.

Using let or const instead of var.

The keyword var is needed to declare the variable score.

4fill in blank

hard

Fill both blanks to declare two variables x and y using var and assign them values 5 and 10.

Javascript

var [1] = 5, [2] = 10;

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

Ax

Bvar

Cy

Dlet

Attempts:

3 left

💡 Hint

Common Mistakes

Using let instead of var.

Using the keyword var twice.

Using wrong variable names.

Use variable names x and y after the var keyword to declare both variables.

5fill in blank

hard

Fill all three blanks to declare variables a, b, and c using var and assign them values 1, 2, and 3.

Javascript

var [1] = 1, [2] = 2, [3] = 3;

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

Aa

Bb

Cc

Dlet

Attempts:

3 left

💡 Hint

Common Mistakes

Using let instead of var.

Using wrong variable names or order.

Missing commas between variables.

Declare variables a, b, and c separated by commas after the var keyword.