Uncaught SyntaxError: redeclaration of let imageCount <anonymous> debugger eval code:1

[albert-widjaja]

Hi @nanpuhaha ,

The script throws error and stopped working when executed under Firefox.

[mrishab]

AI-Generated Summary and Guidance

Issue Analysis: The SyntaxError "redeclaration of let imageCount" occurs because the script variable is being declared multiple times when the script is executed multiple times (or through the console multiple times).

Root Cause: In JavaScript (especially in strict mode), let variables have block scope. When the script is pasted into the console and executed multiple times, the variable redeclaration causes an error.

Solution - Code Changes Needed:

1. Wrap in IIFE (Immediately Invoked Function Expression): Wrap the entire script in an IIFE to create a new scope for each execution:

   (function() {
     let imageCount = 0;
     // ... rest of your script
   })();

2. Use var instead of let (not recommended, but works): This allows redeclaration, but let is better practice.

3. Use conditional declaration: Check if the variable exists before declaring:

   if (typeof imageCount === 'undefined') {
     let imageCount = 0;
   }

Recommended Action: Option 1 (IIFE) is the best approach - it's clean, maintains proper scoping, and allows the script to run multiple times without errors.

Next Steps:

• Update the main script to wrap code in an IIFE
• Test in Firefox to confirm the error is resolved
• This should also make the script safer for multiple executions