Coding Challenge

What is a variable in Scratch?

• A variable in Scratch is a placeholder for a value that can change.

• A variable in Scratch is a type of costume for sprites.

• A variable in Scratch is a type of sound effect.

• A variable in Scratch is a fixed value that never changes.

How do you declare a variable in JavaScript?

• myVariable = 0;

• var myVariable;

• const myVariable;

• let myVariable;

What is the purpose of conditionals in coding?

• Conditionals in coding are used to make decisions based on certain conditions.

• Conditionals in coding are used to store data.

• Conditionals in coding are used to format text.

• Conditionals in coding are used to create loops.

Explain the 'if' statement in JavaScript.

• The 'if' statement in JavaScript is used to make decisions in code based on whether a condition is true or false.

• The 'if' statement in JavaScript is not supported in modern browsers

• The 'if' statement in JavaScript is only used for printing output

• The 'if' statement in JavaScript is used for looping through arrays

What are comparison operators used for?

• Comparison operators are used to create loops in programming

• Comparison operators are used to store data in variables

• Comparison operators are used to perform mathematical operations

• Comparison operators are used to compare values in programming.

How do you create a loop in Scratch?

• Use the 'loop' block in Scratch.

• Click the green flag in Scratch.

• Type 'loop' in the Scratch search bar.

• Use the 'repeat' block in Scratch.

What is the difference between '==' and '===' in JavaScript?

• '==' is the strict equality operator

• '===' converts values to a common type before comparison

• '==' is the equality operator that converts values to a common type before comparison, while '===' is the strict equality operator that compares both value and type without conversion.

• '==' compares value and type without conversion

Give an example of using a 'for' loop in JavaScript.

• for (let i = 0; i < array.length; i++) { console.log(i); }

• for (let i = 0; i < array.length; i++) { console.log('Hello'); }

• for (let i = 0; i < array.length; i++) { console.log(array); }

• for (let i = 0; i < array.length; i++) { console.log(array[i]); }

How can you use variables in loops?

• By declaring the variable within the loop

• By using variables only outside the loop

• By not updating the variable during the loop

• By initializing a variable before the loop, updating the variable within the loop, and using the variable as a condition to control the loop's execution.

What is the role of operators in programming?

• Operators in programming are not necessary and can be omitted.

• Operators in programming perform specific operations on operands.

• Operators in programming are used to confuse the code.

• Operators in programming are used for decoration purposes only.