Code organization

I am about to convert a lengthy Processing sketch to p5.js. Currently the code is defined in several files (a common driver, some objects/classes, etc) and I’d like to keep them separate. This was doable with the Processing IDE. Essentially I’m looking for something like the “c” language’s #include.

Any suggestions?


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you mean like

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Yes, that editor is much like the Processing IDE. However, I don’t want to use it if possible. I would prefer to use my editor of choice and maintain my files locally. Admittedly I never signed up – I was assuming that the files are maintained on the p5 site, again, not my preference. Also, I will still need the feature I am seeking, something like #include, if I want to execute the javascript outside of the p5 editor.

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1st you have to decide if it’s gonna be global or instance mode approach: :globe_with_meridians:

You can see both approaches in the repo below: :grinning:

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did you even look at the code? or download it?

you not need to register/login for this, but well you should know how to click on the little arrows to find file/path …

it does not matter what editor or environment you use
i make that example for you to show one way how to do the multi file thing
( comparable with the multi *.pde in processing IDE JAVA mode. )
and commented all entries!

Sorry kll, I clicked your link to the editor but I did not see the example you cite. And if, by the little arrows, you are referring to the p5 menu bar items (e.g., File, Edit), I see nothing that would lead me to the example.

Thanks for the citation GoToLoop. I’ll go take a look.

yes that “>” little arrow is much too small!

ok, i give up,
i print it here:


function setup() {
  createCanvas(400, 400);

function draw() {
  my_rectangle();    // see file my_function.js / see index.html


 file: my_function.js
 called in index.html
 used   in sketch.js

function my_rectangle() {
  fill(0, 200, 0);
  stroke(0, 0, 200);
  rect(0, 0, 100, 100);


<!DOCTYPE html>
    <script src=""></script>
    <script src=""></script>
    <script src=""></script>
    <link rel="stylesheet" type="text/css" href="style.css">
    <meta charset="utf-8" />

    <script src="sketch.js"></script>
    <script src="my_function.js"></script>   <!--- add --->

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Aha, kll, I did find the contents of the Project Folder. True, I didn’t notice that particular arrow.

Thanks kll for your perseverance.

as you not use the online editor it does not matter,

still i recommend that for communication/questions about p5.js
you register and use it to ask for help here but play together with your MVCE code online.

so now you see the example code / here above / and online /
did you get the idea?
instead #include use index.html script

Yes, once I saw the contents of your Project Folder, everything became clear.

Again, thanks.