Variables in prototypes in Figma - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a variable in Figma prototypes?

A variable in Figma prototypes is a named value that can store information like text, numbers, or colors. It helps make prototypes interactive and dynamic by changing content based on user actions.

beginner

How do variables improve prototype design?

Variables let you reuse values and update multiple places at once. This saves time and keeps your prototype consistent when you change data or styles.

beginner

Name two types of variables you can use in Figma prototypes.

You can use text variables (for changing labels or messages) and number variables (for counters or scores). Color variables are also common for changing themes or states.

intermediate

How do you update a variable during a prototype interaction?

You set an action in the prototype that changes the variable’s value when a user clicks or interacts. For example, clicking a button can increase a number variable.

intermediate

Why is using variables better than duplicating frames for different states?

Variables let you change content inside one frame instead of making many frames for each state. This keeps your prototype simpler and easier to update.

What can a variable in a Figma prototype store?

A Text, numbers, or colors

B Only text

C Only colors

D Only images

Variables can store text, numbers, or colors to make prototypes dynamic.

How do variables help when you want to change a button label in many places?

A You must edit each button separately

B Variables update all linked labels at once

C Variables do not affect labels

D You need to duplicate frames

Variables let you update all linked labels by changing the variable once.

Which action can change a variable during a prototype?

A User clicks a button

B User opens the file

C User scrolls the page

D User changes the frame size

Clicking a button can trigger an action to update a variable.

What is a benefit of using variables instead of multiple frames for states?

A More frames to manage

B Variables do not affect frames

C Simpler prototype with fewer frames

D Slower prototype loading

Variables reduce the need for many frames, making prototypes simpler.

Which of these is NOT a common variable type in Figma prototypes?

A Text

B Number

C Color

D Audio

Audio is not a common variable type in Figma prototypes.

Explain how variables make Figma prototypes more interactive and easier to update.

Think about how changing one value can affect many parts of your prototype.

Describe the steps to create and use a variable to change a button label when clicked in a Figma prototype.

Focus on variable creation, linking, and interaction setup.

Practice

1. What is the main purpose of using variables in Figma prototypes?

easy

A. To store information that makes prototypes interactive

B. To change the color of shapes automatically

C. To export images faster

D. To create new pages in the file

Solution

1. Step 1: Understand what variables do in prototypes

   Variables hold data like numbers or text to change prototype behavior dynamically.

2. Step 2: Identify the correct purpose

   Among the options, only storing information for interactivity matches variables' role.

3. Final Answer:

   To store information that makes prototypes interactive -> Option A

4. Quick Check:

   Variables = store info for interactivity [OK]

Hint: Variables store data to make prototypes respond [OK]

Common Mistakes:

• Thinking variables change colors automatically
• Confusing variables with exporting features
• Assuming variables create new pages

2. Which of the following is the correct syntax to set a variable named score to 10 in a Figma prototype?

easy

A. Set(score, 10)

B. Set(score = 10)

C. Set("score", 10)

D. Set('score' = 10)

Solution

1. Step 1: Recall the syntax for setting variables

   Variables require the name as a string in quotes and the value separated by a comma.

2. Step 2: Compare options

   Only Set("score", 10) uses quotes around the variable name and a comma to separate name and value.

3. Final Answer:

   Set("score", 10) -> Option C

4. Quick Check:

   Set("name", value) syntax [OK]

Hint: Variable names need quotes in Set() function [OK]

Common Mistakes:

• Omitting quotes around variable name
• Using equals sign instead of comma
• Using single quotes incorrectly

3. Given the variable count is set to 3, what will be displayed if the text element contains: You clicked {{count}} times?

medium

A. You clicked 0 times

B. You clicked {{count}} times

C. You clicked times 3

D. You clicked 3 times

Solution

1. Step 1: Understand variable usage in text

   The syntax {{count}} replaces with the current value of the variable count.

2. Step 2: Substitute the value

   Since count = 3, the text becomes "You clicked 3 times".

3. Final Answer:

   You clicked 3 times -> Option D

4. Quick Check:

   {{count}} = 3 substitution [OK]

Hint: {{variable}} shows current variable value in text [OK]

Common Mistakes:

• Leaving {{count}} as is without substitution
• Mixing order of words
• Assuming variable is zero if not set

4. You wrote Set(count 5) to set a variable but it doesn't work. What is the error?

medium

A. Missing comma between variable name and value

B. Variable name should not be in quotes

C. Value must be a string, not a number

D. Set function cannot set numbers

Solution

1. Step 1: Check the Set() function syntax

   Set() requires two arguments separated by a comma: name and value.

2. Step 2: Identify the missing comma

   The code misses the comma between count and 5, causing syntax error.

3. Final Answer:

   Missing comma between variable name and value -> Option A

4. Quick Check:

   Set(name, value) needs comma [OK]

Hint: Remember comma separates name and value in Set() [OK]

Common Mistakes:

• Forgetting the comma
• Using wrong quotes around variable name
• Thinking numbers can't be set

5. You want to create a prototype that counts how many times a button is clicked. Which sequence correctly updates and shows the count using variables?

hard

A. Set("count", 1) on start; on click: Set("count", 1); display text: "Clicked {{count}} times"

B. Set("count", 0) on start; on click: Set("count", {{count}} + 1); display text: "Clicked {{count}} times"

C. Set(count, 0) on start; on click: Set(count, count + 1); display text: "Clicked count times"

D. Set("count", 0) on start; on click: Set("count", count + 1); display text: "Clicked {{count}} times"

Solution

1. Step 1: Initialize the count variable correctly

   Use Set("count", 0) with quotes around name to start at zero.

2. Step 2: Update count on click using current value plus one

   Use Set("count", {{count}} + 1) to add one to current count value.

3. Step 3: Display the count using {{count}} syntax

   Text must use "Clicked {{count}} times" to show updated count.

4. Final Answer:

   Set("count", 0) on start; on click: Set("count", {{count}} + 1); display text: "Clicked {{count}} times" -> Option B

5. Quick Check:

   Initialize, increment with {{count}}, display with {{count}} [OK]

Hint: Initialize zero, increment with {{count}} + 1, display with {{count}} [OK]

Common Mistakes:

• Not using quotes around variable name
• Not referencing variable with {{}} when updating
• Displaying variable name without {{}} in text