p5js/sketch-template.js

function setup() {
    createCanvas(600, 600);
    angleMode(DEGREES);
    cursor(CROSS);
    frameRate(60);
}

function draw() {
    background(64);
}

function drawGrid() {
    push();
    stroke(0, 64);
    strokeWeight(1);
    for (let x = 0; x < width; x += 10) line(x, 0, x, height);
    for (let y = 0; y < height; y += 10) line(0, y, width, y);
    pop();
}