Is it unable to define objects using a "class" keyword on the p5.js mode on Processing

p5.js
1

I use the p5.js mode on Processing 3.5.4, and run a sample “ex02_Multiple_Objects” from a Objects group.
I get the following error:
SyntaxError: Expected an operand but found class.

If I open index.html on a browser (Chrome and Safari) from a sketch folder, it works fine.

I can not understand the reason. Is this the specification of the p5.js mode on Processing IDE? Is it unable to define objects using a “class” keyword on the p5.js mode on Processing IDE?

Thank you in advance.

1 Like
2

It sounds like either:

  1. your sketch in PDE does not have “p5.js mode” selected, and you are running in e.g. Java mode
  2. you accidentally made a change to the example and saved it, deleting lines immediately before the class line. “Expecting an operand” means the compiler was looking for e.g. ‘+’ – that shouldn’t happen if the last thing was a function closing correctly with }

There are more exotic possibilities, but those are guesses to start. If you cut and paste the example into the editor.p5js.org, what happens?

3

Thank you for your reply.
What you wrote is exactly right, but my situation is not either.
I use Processing 3.5.4 with p5.js mode 1.2.2 on Windows 10.
If I run a code for ex01_Objects in “Sample” on the editor.p5js.org, it works. However, I want to use p5.js mode in Processing IDE. Is there any problem in p5.js mode in Processing IDE?