Cannot read properties of null (reading 'appendChild')

[fampeeters]

The videos about p5.js on TheCodingTrain are fantastic! I now downloaded a course p5.js in Dutch for my students and in every example of that course there is a line in the function setup():
canvas.parent('processing');

I believe the line is meant to create a div in the html.
However, I get an error message every time I use this line:
TypeError: Cannot read properties of null (reading 'appendChild')
I just comment that line so that it is ignored. But can I solve the problem in a different way so that I can keep all the examples with this line included?

function setup() {
  canvas = createCanvas(450,450);
  background('darkred');
  // canvas.parent('processing');
  noLoop();
}

[holasoymalva]

Of course, the only thing necessary is to add a div in the html file with the id="processing" 🙂 You can take the following example as a reference: 👉 CLICK HERE, or if would you like to create the div inside the JS file with P5 you can use this example as a reference 👉 CLICK HERE In these cases the use of .parent() is to attach the element to the parent specified (That Parent should exist before attaches). You can read all the documentation about this method in the next link 👉 Read HERE, My best wishes ✨