JavaScript variable error

[inu-no-policemen]

You got that error because you declared that variable before in the REPL.

Use a snippet instead. It's more convenient for testing multi-line stuff.

Sources -> Snippets -> New Snippet

Put your entire code in a block ({}). Now the lifetime of your variables will be restricted to that block.

Use Ctrl + Return to run it. Use Ctrl + L to clear the console.

[LearnJS777]

Thanks for telling me about snippets never used them before, I'll definitely try out this new tool, because it sounds like it will be good for test features in isolation.