uhh calculator I think

This sketch creates a fully functional calculator interface with a dark theme, clickable buttons, and a live-updating display. It handles basic arithmetic operations, decimal inputs, and includes mobile-friendly touch support alongside mouse interactions.

Open in Editor Remix View in Gallery

🧪 Try This!

Experiment with the code by making these changes:

Change the calculator's title — Replace 'corbuns calculator' with any text—your custom name will appear at the top
Make operator buttons bigger
Change the display color to red
Add the modulo operator (%) — Adds a new operator button that calculates remainder (e.g., 7 % 3 = 1)
Change the background color to dark blue

Prefer the full editor? Open it there →

📖 About This Sketch

This sketch builds a complete, clickable calculator using p5.js DOM manipulation and event listeners rather than canvas drawing. The interface features a custom title, a green-on-black display, color-coded operator buttons, and responsive touch and mouse support. You'll see how p5.js createButton(), createDiv(), and the p5 event system work together to build a real web application.

The code is organized around calculator state variables that track the current display, the first operand, the operator, and whether we're waiting for a second number. Each button press triggers handleButtonPress(), which routes to specialized functions like inputDigit(), inputOperator(), or calculate(). By studying this sketch, you'll learn how to manage application state, prevent duplicate events on mobile devices, and build event-driven interfaces that feel responsive and polished.

⚙️ How It Works

When the sketch loads, setup() creates a div container and builds the calculator DOM structure with a title, display element, and 16 buttons arranged in a 4×4 grid using CSS classes.
Each button stores its value and attaches two event listeners: mousePressed() and touchStarted(). The touchHandled flag prevents the browser's simulated mouse event from firing immediately after a real touch, which would double-trigger calculations on mobile.
When a user clicks or taps any button, handleButtonPress() receives the button's value and routes it to the correct handler: inputDigit() appends numbers, inputOperator() stores the operator and first operand, or calculate() performs the arithmetic.
The calculator maintains state across button presses using global variables: firstOperand holds the left-hand number, operator stores +, −, ×, or ÷, and waitingForSecondOperand prevents the next digit from being appended to the display.
When the equals button is pressed, handleEquals() calls calculate() to perform the operation and resets the state for a fresh calculation.
updateDisplay() syncs the displayValue variable to the DOM element's innerHTML, making all changes visible instantly without redrawing the canvas.

🎓 Concepts You'll Learn

DOM manipulation and p5.js elementsEvent handling (mouse and touch)State management and global variablesConditional logic and routingCSS styling and responsive designDebouncing and mobile double-tap prevention

📝 Code Breakdown

`setup()`

setup() runs once when the sketch loads. Here it builds the entire calculator UI by creating p5 DOM elements and attaching event listeners to each button. The touch debounce pattern is crucial for mobile—without it, a single tap would trigger both the touch event AND a simulated mouse event, causing calculations to run twice.

🔬 This array defines the first row of buttons. What happens if you remove one line, like the division operator? Or add a new operator like '%' for modulo (remainder)?

  const buttonValues = [
    { value: '+', class: 'operator' },
    { value: '-', class: 'operator' },
    { value: '*', class: 'operator', html: '&times;' }, 
    { value: '/', class: 'operator', html: '&divide;' },

function setup() {
  createCanvas(0, 0);

  // Create the main calculator container
  calculatorDiv = createDiv();
  calculatorDiv.addClass('calculator');

  // Create the custom title
  titleElement = createDiv('corbuns calculator');
  titleElement.addClass('calculator-title');
  calculatorDiv.child(titleElement);

  // Create the display element
  displayElement = createDiv(displayValue);
  displayElement.addClass('calculator-display');
  calculatorDiv.child(displayElement);

  // Create the keys container
  let keysDiv = createDiv();
  keysDiv.addClass('calculator-keys');
  calculatorDiv.child(keysDiv);

  // Define the button layout and their values
  const buttonValues = [
    { value: '+', class: 'operator' },
    { value: '-', class: 'operator' },
    { value: '*', class: 'operator', html: '&times;' }, 
    { value: '/', class: 'operator', html: '&divide;' }, 

    { value: '7', class: '' },
    { value: '8', class: '' },
    { value: '9', class: '' },

    { value: '4', class: '' },
    { value: '5', class: '' },
    { value: '6', class: '' },

    { value: '1', class: '' },
    { value: '2', class: '' },
    { value: '3', class: '' },

    { value: '0', class: '' },
    { value: '.', class: 'decimal' },
    { value: 'clear', class: 'all-clear', html: 'AC' }, 
    { value: '=', class: 'equal-sign' } 
  ];

  // Create buttons and add them to the keys container
  buttonValues.forEach(btnData => {
    let button = createButton(btnData.html || btnData.value);
    button.addClass(btnData.class);
    button.elt.value = btnData.value; 
    keysDiv.child(button);

    // Attach event listeners
    // Handle mouse presses, but ignore if a touch has just occurred
    button.mousePressed(() => {
      if (touchHandled) {
        touchHandled = false; // Reset flag for next interaction
        return; // Ignore this mouse event, it's likely a simulated one
      }
      handleButtonPress(button.elt.value);
    });
    // Handle touch starts and set a flag
    button.touchStarted(() => {
      touchHandled = true; // Set flag to indicate a touch has occurred
      handleButtonPress(button.elt.value);
      // Reset the flag after a short delay to allow subsequent mouse events
      // but still block the immediate simulated mouse event.
      setTimeout(() => {
        touchHandled = false;
      }, 300); // 300ms is a common debounce time
    });

    // Store references for specific button types if needed
    if (btnData.value === 'clear') allClearButton = button;
    else if (btnData.value === '=') equalSignButton = button;
    else if (btnData.value === '.') decimalButton = button;
    else if (!isNaN(btnData.value)) numberButtons.push(button); 
    else if (['+', '-', '*', '/'].includes(btnData.value)) operatorButtons.push(button);
  });

  // Initial display update
  updateDisplay();
}

Line-by-line explanation (17 lines)

🔧 Subcomponents:

for-loop Button Creation Loop buttonValues.forEach(btnData => {

Iterates through all 16 button definitions and creates corresponding DOM elements with event listeners

conditional Touch Debounce (Mouse) if (touchHandled) {

Prevents double-firing when a touch event has just occurred by ignoring the simulated mouse event

function-call Touch Debounce (Touch)

      setTimeout(() => {
        touchHandled = false;
      }, 300);

Sets a 300ms delay before allowing the next mouse event to fire, blocking the browser's simulated click

createCanvas(0, 0);: Creates a hidden canvas with 0×0 size—p5.js requires a canvas even though we're using DOM elements instead
calculatorDiv = createDiv();: Creates the main container div that will hold all calculator elements
calculatorDiv.addClass('calculator');: Adds the CSS class 'calculator' to style the container with grid layout and dark background
const buttonValues = [: Defines an array of objects containing button data: value (what gets calculated), CSS class, and optional HTML (like × for multiply)
buttonValues.forEach(btnData => {: Loops through each button definition and creates a p5 button element for it
let button = createButton(btnData.html || btnData.value);: Creates a p5 button; uses the html property if it exists (for display symbols like ×), otherwise uses the value
button.elt.value = btnData.value;: Stores the actual button value in the DOM element's value property so we know what operation to perform when clicked
button.mousePressed(() => {: Attaches a mouse event listener that fires when the button is clicked
if (touchHandled) {: Checks if a touch event just fired; if so, ignores this mouse event to prevent double-calculation
handleButtonPress(button.elt.value);: Calls the main button handler with the button's value, routing to the correct calculator function
button.touchStarted(() => {: Attaches a touch event listener that fires when the button is touched on mobile
touchHandled = true;: Sets the flag to true so the next simulated mouse event will be blocked
setTimeout(() => {: Schedules a function to run after a delay; used here to reset the touch flag after 300ms
}, 300);: The delay in milliseconds—300ms is long enough to block the simulated mouse event but short enough that real mouse clicks work normally
if (btnData.value === 'clear') allClearButton = button;: Stores a reference to the clear button in a global variable for potential future use
else if (!isNaN(btnData.value)) numberButtons.push(button);: Uses isNaN() to check if the value is a number; if so, adds the button to the numberButtons array
updateDisplay();: Syncs the initial displayValue ('0') to the DOM, showing it on the calculator screen

`draw()`

The draw() function is empty because this calculator doesn't use canvas animation. Instead, all state changes happen in response to button clicks, and updateDisplay() updates the DOM directly. This is a common pattern for interactive UI sketches.

function draw() {
  // Empty draw loop - everything is handled by DOM events
}

Line-by-line explanation (1 lines)

// Empty draw loop - everything is handled by DOM events: This sketch doesn't animate or redraw anything continuously; all interaction is event-driven, so the draw loop stays empty

`handleButtonPress()`

handleButtonPress() is the traffic controller of the calculator—it receives every button value and routes it to the correct handler function. This is called the 'dispatcher' pattern and makes the code easy to read and modify. Each handler is responsible for one type of input.

🔬 This is a routing chain that checks what type of button was pressed. What happens if you swap the order of two conditions—like checking for equals before checking for decimals? Will the calculator still work?

  if (!isNaN(value)) { 
    inputDigit(value);
  } else if (value === '.') { 
    inputDecimal(value);
  } else if (value === 'clear') { 
    resetCalculator();
  } else if (value === '=') { 
    handleEquals();
  } else { 
    inputOperator(value);
  }

// Handles any button press
function handleButtonPress(value) {
  if (!isNaN(value)) { 
    inputDigit(value);
  } else if (value === '.') { 
    inputDecimal(value);
  } else if (value === 'clear') { 
    resetCalculator();
  } else if (value === '=') { 
    handleEquals();
  } else { 
    inputOperator(value);
  }
  updateDisplay();
}

Line-by-line explanation (12 lines)

🔧 Subcomponents:

conditional Digit Check if (!isNaN(value)) {

Determines if the value is a number (0-9) and routes to digit input

conditional Decimal Check } else if (value === '.') {

Checks if the button is the decimal point and routes to decimal input

conditional Clear Check } else if (value === 'clear') {

Checks if the button is the clear button and resets the calculator

conditional Equals Check } else if (value === '=') {

Checks if the button is equals and performs the final calculation

conditional Operator Fallthrough } else {

Routes any other value (operators like +, -, *, /) to the operator handler

function handleButtonPress(value) {: This function is called every time a button is clicked, receiving the button's value as a string
if (!isNaN(value)) {: isNaN() returns true if the value is NOT a number; the ! flips it to true for actual numbers (0-9)
inputDigit(value);: Routes digit presses to inputDigit() to append or replace the display value
} else if (value === '.') {: Checks if the pressed button is a decimal point
inputDecimal(value);: Routes decimal presses to inputDecimal() to add a decimal point if one doesn't already exist
} else if (value === 'clear') {: Checks if the AC (All Clear) button was pressed
resetCalculator();: Resets all calculator state variables to their initial values
} else if (value === '=') {: Checks if the equals button was pressed
handleEquals();: Performs the final calculation and displays the result
} else {: If none of the above conditions match, the value must be an operator (+, -, *, /)
inputOperator(value);: Routes operator presses to inputOperator() to store the operator and prepare for the second operand
updateDisplay();: After handling the button press, updates the display DOM element to show the new calculator state

`inputDigit()`

inputDigit() handles the logic of building multi-digit numbers. The waitingForSecondOperand flag is key: after you press an operator, the next digit replaces the display instead of appending, so '5 + 3' shows '5', then '3' (not '5' then '53').

🔬 The first branch sets displayValue to a single digit; the second appends or replaces. Try pressing '5', then '+', then '3'—what does the display show at each step, and which branch of this if-statement runs for each press?

  if (waitingForSecondOperand === true) {
    displayValue = digit;
    waitingForSecondOperand = false;
  } else {
    displayValue = displayValue === '0' ? digit : displayValue + digit;
  }

// Inputs a digit into the display
function inputDigit(digit) {
  if (waitingForSecondOperand === true) {
    displayValue = digit;
    waitingForSecondOperand = false;
  } else {
    displayValue = displayValue === '0' ? digit : displayValue + digit;
  }
}

Line-by-line explanation (5 lines)

🔧 Subcomponents:

conditional Waiting for Second Operand Check if (waitingForSecondOperand === true) {

Determines if a new number should replace the display or be appended to it

conditional Zero Replacement (Ternary) displayValue = displayValue === '0' ? digit : displayValue + digit;

Avoids showing leading zeros by replacing '0' with the new digit instead of appending '05'

function inputDigit(digit) {: Called when a number button (0-9) is pressed; digit is the string value of that number
if (waitingForSecondOperand === true) {: After an operator is pressed, this flag is set to true, meaning the next digit should start a fresh number
displayValue = digit;: Replaces the display entirely with this new digit instead of appending to it
waitingForSecondOperand = false;: Resets the flag so the next digit will be appended normally (e.g., pressing 5 then 7 shows '57' not '5')
displayValue = displayValue === '0' ? digit : displayValue + digit;: Ternary operator: if display shows '0', replace it with the new digit; otherwise append the digit (so 0 + 5 = 5, not 05)

`inputDecimal()`

inputDecimal() is simple but important: it prevents invalid numbers like '3.14.15'. The includes() method is a string method that checks if one string contains another.

// Inputs a decimal point
function inputDecimal(dot) {
  if (!displayValue.includes(dot)) {
    displayValue += dot;
  }
}

Line-by-line explanation (3 lines)

🔧 Subcomponents:

conditional Duplicate Decimal Check if (!displayValue.includes(dot)) {

Prevents adding a second decimal point to the same number

function inputDecimal(dot) {: Called when the decimal point button is pressed; dot is the string '.'
if (!displayValue.includes(dot)) {: checks() if the display already contains a decimal point; the ! means 'if NOT included', so we only add if missing
displayValue += dot;: Appends a decimal point to the display (so '5' becomes '5.')

`inputOperator()`

inputOperator() is the most complex function because it handles three cases: storing the first number, chaining operations (like 5 + 3 + 2), and allowing operator changes. The state variables firstOperand, operator, and waitingForSecondOperand work together to track where we are in a calculation.

🔬 The first branch saves the first number; the second branch calculates immediately if we have two numbers and an operator. Try entering '5 + 3 + 2' and watch which branch runs each time. What does the display show after each press?

  if (firstOperand === null) {
    firstOperand = inputValue;
  } else if (operator) {
    const result = calculate(firstOperand, operator, inputValue);
    displayValue = String(result);
    firstOperand = result;
  }

// Handles operator input
function inputOperator(nextOperator) {
  const inputValue = parseFloat(displayValue);

  if (operator && waitingForSecondOperand) {
    operator = nextOperator;
    return;
  }

  if (firstOperand === null) {
    firstOperand = inputValue;
  } else if (operator) {
    const result = calculate(firstOperand, operator, inputValue);
    displayValue = String(result);
    firstOperand = result;
  }

  waitingForSecondOperand = true;
  operator = nextOperator;
}

Line-by-line explanation (13 lines)

🔧 Subcomponents:

conditional Operator Change Without Second Operand if (operator && waitingForSecondOperand) {

Allows changing the operator before entering a second number (e.g., pressing 5, +, -, should let you switch to subtract)

conditional First Operand Storage if (firstOperand === null) {

Stores the first number when an operator is pressed for the first time

conditional Chained Calculation } else if (operator) {

Handles operator chaining: if 5 + 3 + 2 is entered, this calculates 5 + 3 = 8 before storing the next operator

function inputOperator(nextOperator) {: Called when an operator button (+, -, *, /) is pressed; nextOperator is the operator symbol
const inputValue = parseFloat(displayValue);: Converts the display string (e.g., '42') to a floating-point number so it can be used in math
if (operator && waitingForSecondOperand) {: If we already have an operator AND we're still waiting for a second number, the user is changing their mind about which operator to use
operator = nextOperator;: Replace the old operator with the new one without calculating anything
return;: Exit early so we don't run the rest of the function
if (firstOperand === null) {: On the very first operator press, firstOperand will be null because we haven't stored it yet
firstOperand = inputValue;: Store the first number in firstOperand so we can use it when the second operand arrives
} else if (operator) {: If firstOperand is NOT null AND we have an operator stored, the user has entered two numbers and an operator (e.g., 5 + 3 +)
const result = calculate(firstOperand, operator, inputValue);: Immediately calculate 5 + 3 = 8 so we can chain operations
displayValue = String(result);: Show the intermediate result on the display
firstOperand = result;: Store the result as the first operand for the next operation (8 becomes the left side of the next calc)
waitingForSecondOperand = true;: Set the flag so the next digit replaces the display instead of appending
operator = nextOperator;: Store the operator we just pressed, ready for the next operand

`calculate()`

calculate() is a pure function—it takes inputs and returns a result without changing anything else. The division-by-zero check is defensive programming, preventing errors before they happen. In real calculators, this is handled by returning Infinity or NaN, but returning an error message is more user-friendly.

🔬 This division branch has an extra safety check. What happens if you remove the if-statement for zero division and just always return first / second? Try dividing by zero to see.

  } else if (op === '/') {
    if (second === 0) {
      return 'Error: Div by 0';
    }
    return first / second;
  }

// Performs the calculation
function calculate(first, op, second) {
  if (op === '+') {
    return first + second;
  } else if (op === '-') {
    return first - second;
  } else if (op === '*') {
    return first * second;
  } else if (op === '/') {
    if (second === 0) {
      return 'Error: Div by 0';
    }
    return first / second;
  }
  return second;
}

Line-by-line explanation (12 lines)

🔧 Subcomponents:

conditional Division by Zero Check if (second === 0) {

Prevents division by zero by returning an error message instead

switch-case Operator Selection if (op === '+') { ... } else if (op === '-') { ... }

Routes to the correct arithmetic operation based on the operator symbol

function calculate(first, op, second) {: Takes three arguments: the first number, the operator string, and the second number; returns the result
if (op === '+') {: Checks if the operator is addition
return first + second;: Returns the sum of the two numbers
} else if (op === '-') {: Checks if the operator is subtraction
return first - second;: Returns the difference
} else if (op === '*') {: Checks if the operator is multiplication
return first * second;: Returns the product
} else if (op === '/') {: Checks if the operator is division
if (second === 0) {: Before dividing, checks if the divisor is zero (which would cause an error)
return 'Error: Div by 0';: Returns an error string instead of dividing, preventing a crash or infinity result
return first / second;: If the divisor is not zero, returns the quotient
return second;: Fallback: if the operator doesn't match any case, returns the second operand (should never happen in normal use)

`handleEquals()`

handleEquals() finalizes a calculation and resets the state. The safety checks are important—they prevent crashes and undefined behavior from incomplete expressions. After equals is pressed, the calculator is ready for a fresh calculation.

// Handles the equals button press
function handleEquals() {
  if (firstOperand === null || operator === null || waitingForSecondOperand) {
    return; 
  }

  const inputValue = parseFloat(displayValue);
  const result = calculate(firstOperand, operator, inputValue);

  displayValue = String(result);
  firstOperand = null;
  operator = null;
  waitingForSecondOperand = false;
}

Line-by-line explanation (9 lines)

🔧 Subcomponents:

conditional Calculation Safety Check if (firstOperand === null || operator === null || waitingForSecondOperand) {

Prevents calculation if we don't have a complete expression (both operands and an operator)

function handleEquals() {: Called when the equals button is pressed; takes no arguments because it uses the global calculator state
if (firstOperand === null || operator === null || waitingForSecondOperand) {: Safety check: exit early if we're missing a first operand, an operator, or if we're still waiting for a second number (invalid state)
return;: Exit the function without calculating, preventing errors from incomplete expressions like '5 =' or '+ 3 ='
const inputValue = parseFloat(displayValue);: Convert the current display to a number so it can be used in the calculation
const result = calculate(firstOperand, operator, inputValue);: Call calculate() with both operands and the operator to get the final result
displayValue = String(result);: Convert the result back to a string and update the display
firstOperand = null;: Clear the first operand so the next calculation starts fresh
operator = null;: Clear the operator
waitingForSecondOperand = false;: Reset the flag so the next digit will append to the display instead of replacing it

`resetCalculator()`

resetCalculator() wipes all state variables back to their initial values. This is used by the AC button and is one of the simplest but most important functions—it ensures the calculator returns to a known, clean state.

// Resets the calculator
function resetCalculator() {
  displayValue = '0';
  firstOperand = null;
  operator = null;
  waitingForSecondOperand = false;
}

Line-by-line explanation (5 lines)

function resetCalculator() {: Called when the AC (All Clear) button is pressed; takes no arguments
displayValue = '0';: Reset the display to the default starting value
firstOperand = null;: Clear the stored first operand
operator = null;: Clear the stored operator
waitingForSecondOperand = false;: Reset the flag so the calculator is ready to accept a new number

`updateDisplay()`

updateDisplay() is the bridge between the calculator's internal state (JavaScript variables) and what the user sees (the DOM). It's called at the end of every handler to ensure the display always reflects the current state.

// Updates the display element with the current displayValue
function updateDisplay() {
  displayElement.html(displayValue);
}

Line-by-line explanation (2 lines)

function updateDisplay() {: Called after every state change to sync the displayValue variable to the DOM
displayElement.html(displayValue);: Sets the innerHTML of the display element to the current displayValue, making it visible on screen

📦 Key Variables

displayValue string

Stores what is currently shown on the calculator screen (e.g., '0', '42', '3.14')

let displayValue = '0';

firstOperand number or null

Stores the first number in a calculation (e.g., in '5 + 3', this holds 5)

let firstOperand = null;

operator string or null

Stores which operator was pressed: '+', '-', '*', or '/'

let operator = null;

waitingForSecondOperand boolean

Flag that tells inputDigit() whether to replace the display (true) or append to it (false)

let waitingForSecondOperand = false;

touchHandled boolean

Flag used to prevent double-firing of mouse events after a touch event on mobile devices

let touchHandled = false;

calculatorDiv p5 DOM element

Stores the reference to the main calculator container div

let calculatorDiv;

displayElement p5 DOM element

Stores the reference to the display div where numbers and results are shown

let displayElement;

numberButtons array of p5 DOM elements

Stores references to all number buttons (0-9) for potential future use

let numberButtons = [];

operatorButtons array of p5 DOM elements

Stores references to all operator buttons (+, -, *, /) for potential future use

let operatorButtons = [];

🔧 Potential Improvements (6)

Here are some ways this code could be enhanced:

BUG handleButtonPress(), all functions

Incomplete input validation—if somehow a non-standard value reaches calculate(), the fallback 'return second' is silent and confusing

💡 Add an else clause to calculate() that throws an error: `else { throw new Error('Unknown operator: ' + op); }` to catch unexpected values immediately

PERFORMANCE setup() button creation loop

Each button's value is stored redundantly: once in the button.elt.value property and again in handleButtonPress's conditional logic

💡 Simplify by only storing values in one place, or use a switch statement in handleButtonPress() instead of multiple if-else checks for better readability

STYLE CSS file (style.css)

The .decimal hover rule at the end is cut off (ba...) and likely incomplete or missing the background-color property

💡 Complete the .decimal:hover rule: `.decimal:hover { background-color: #666; }` to match other button hover effects

FEATURE calculate() function

No support for advanced operations like exponentiation (^), square root, or percentage calculations

💡 Add operators like ^ for power (Math.pow) or sqrt for square root to make the calculator more powerful and educational

FEATURE handleEquals()

After pressing equals, the user cannot easily continue calculating with the result (e.g., pressing + after =)

💡 Instead of completely resetting, set firstOperand = result before resetting operator so that pressing an operator immediately chains the calculation

BUG inputDecimal(), globally

After chaining operations (e.g., 5 + 3 +), pressing decimal immediately shows a decimal on the operator display, which is invalid

💡 Add a flag reset in inputOperator() or prevent decimal input when waitingForSecondOperand is true

🔄 Code Flow

Code flow showing setup, draw, handlebuttonpress, inputdigit, inputdecimal, inputoperator, calculate, handleequals, resetcalculator, updatedisplay

💡 Click on function names in the diagram to jump to their code

graph TD start[Start] --> setup[setup] setup --> draw[draw loop] draw --> buttoncreationloop[Button Creation Loop] buttoncreationloop --> touchdebouncemouse[Touch Debounce (Mouse)] buttoncreationloop --> touchdeboncetouch[Touch Debounce (Touch)] draw --> updatedisplay[updateDisplay] click setup href "#fn-setup" click draw href "#fn-draw" click buttoncreationloop href "#sub-button-creation-loop" click touchdebouncemouse href "#sub-touch-debounce-mouse" click touchdeboncetouch href "#sub-touch-debounce-touch" setup --> handlebuttonpress[handleButtonPress] handlebuttonpress --> digitcheck[Digit Check] handlebuttonpress --> decimalcheck[Decimal Check] handlebuttonpress --> clearcheck[Clear Check] handlebuttonpress --> equalscheck[Equals Check] handlebuttonpress --> operatorfallthrough[Operator Fallthrough] click handlebuttonpress href "#fn-handlebuttonpress" click digitcheck href "#sub-digit-check" click decimalcheck href "#sub-decimal-check" click clearcheck href "#sub-clear-check" click equalscheck href "#sub-equals-check" click operatorfallthrough href "#sub-operator-fallthrough" digitcheck --> inputdigit[inputDigit] inputdigit --> waitingcheck[Waiting for Second Operand Check] waitingcheck --> zeroreplacement[Zero Replacement] click inputdigit href "#fn-inputdigit" click waitingcheck href "#sub-waiting-check" click zeroreplacement href "#sub-zero-replacement" decimalcheck --> inputdecimal[inputDecimal] click inputdecimal href "#fn-inputdecimal" clearcheck --> resetcalculator[resetCalculator] click resetcalculator href "#fn-resetcalculator" equalscheck --> handleequals[handleEquals] handleequals --> safetycheck[Calculation Safety Check] click handleequals href "#fn-handleequals" click safetycheck href "#sub-safety-check" operatorfallthrough --> inputoperator[inputOperator] inputoperator --> operatorchangecheck[Operator Change Without Second Operand] operatorchangecheck --> firstoperandstore[First Operand Storage] operatorchangecheck --> chainedcalculation[Chained Calculation] click inputoperator href "#fn-inputoperator" click operatorchangecheck href "#sub-operator-change-check" click firstoperandstore href "#sub-first-operand-store" click chainedcalculation href "#sub-chained-calculation" handleequals --> calculate[calculate] calculate --> divisionbyzero[Division by Zero Check] divisionbyzero --> operatorSwitch[Operator Selection] click calculate href "#fn-calculate" click divisionbyzero href "#sub-division-by-zero" click operatorSwitch href "#sub-operator-switch"

❓ Frequently Asked Questions

What visual elements are present in the 'corbuns calculator' sketch?

The sketch features a clean, user-friendly calculator interface with a title, a live display, and responsive buttons for basic arithmetic operations.

How can users interact with the calculator in this p5.js sketch?

Users can click or tap the calculator buttons to perform arithmetic calculations, with results instantly displayed on the screen.

What creative coding concepts does this calculator sketch illustrate?

This sketch demonstrates interactive UI design, event handling for user input, and dynamic updates of display content using p5.js.

Preview

Code flow diagram showing the structure of uhh calculator I think - Code flow showing setup, draw, handlebuttonpress, inputdigit, inputdecimal, inputoperator, calculate, handleequals, resetcalculator, updatedisplay — Code Flow Diagram

🧪 Try This!

📖 About This Sketch

⚙️ How It Works

🎓 Concepts You'll Learn

📝 Code Breakdown

🔧 Subcomponents:

🔧 Subcomponents:

🔧 Subcomponents:

🔧 Subcomponents:

🔧 Subcomponents:

🔧 Subcomponents:

🔧 Subcomponents:

📦 Key Variables

🔧 Potential Improvements (6)

🔄 Code Flow

❓ Frequently Asked Questions

Explore More

uhh very cool game for cdww

SURVIVE CHIWAWA IN ALLEYWAY AT 3AM

uhh very cool game for cdww but tiny diffrnet

Hellen Keller sim

p5js.ai

Gallery

User Guide

Preview