Reference setup()


A function that's called once when the sketch begins running.

Declaring the function setup() sets a code block to run once automatically when the sketch starts running. It's used to perform setup tasks such as creating the canvas and initializing variables:

function setup() {
  // Code to run once at the start of the sketch.

Code placed in setup() will run once before code placed in draw() begins looping. If the preload() is declared, then setup() will run immediately after preload() finishes loading assets.

Note: setup() doesn’t have to be declared, but it’s common practice to do so.


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