p5-injected-into-bookmarklet.js

function setup() {
  console.log('hello from p5 setup');
}
window.setup = setup;

function draw() {
  window.ellipse(50, 50, 80, 80);
}
window.draw = draw;

function injectP5(callback) {
  let script = document.createElement('script');
  script.setAttribute(
    'src',
    '//cdnjs.cloudflare.com/ajax/libs/p5.js/0.7.3/p5.js'
  );
  script.onload = () => callback();
  script.onerror = e => alert('The script failed to load: ' + e);
  document.head.appendChild(script);
}

injectP5(function() {
  console.log('p5 was injected v2');
});