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p5.js | createCheckbox() Function
  • Last Updated : 18 Jul, 2019

The createCheckbox() function in p5.js is used to create a checkbox element in the DOM (Document Object Model). This function includes the p5.dom library. Add the following syntax in the head section.


createCheckbox(label, value)


  • label: This parameter holds the label displayed beside the checkbox.
  • value: This parameter holds the state of the checkbox (true/false).

Example: This example uses a checkbox to change the background color from light to dark and vice-versa.

// Create a variable for checkbox object
var checkbox;
// Create a function to change the background-color
function change_bg() {
    // Set dark color if box is checked
    if (this.checked()) {
    // Set light color if box is unckecked
    else {
function setup() {
    // Create a canvas
    createCanvas(400, 400);
    // Set the background-color
    // Create a checkbox object 
    // Initially unchecked
    checkbox = createCheckbox('Dark Background', false);
    // Posotion the checkbox object
    checkbox.position(160, 200);
    // Call the change_bg() function when the box
    // is cheched or unchecked

Before checking the box:

After chechking the box:



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