Nanobar TypeError Fix Test Report

Issue Summary

Error: TypeError: Cannot read properties of undefined (reading 'appendChild') Location: nanobar.min.js:1:1520 called from index.html:119:19 Root Cause: Nanobar initialization running before DOM element #top-progress-bar was created

Solution Implemented

Fix Applied: Wrapped Nanobar initialization in DOMContentLoaded event listener File Modified: _includes/core/head.html Safety Measures Added:

• Element existence check before initialization
• Console warning if element not found
• Graceful degradation if Nanobar fails

Code Changes

Before (Problematic Code)

<script>
    var options = {
      classname: 'nanobar',
      id: 'top-progress-bar'
    };
    var nanobar = new Nanobar(options);
    nanobar.go( 30 );
    nanobar.go( 76 );
    nanobar.go(100);
</script>

After (Fixed Code)

<script>
    // Wait for DOM to be ready before initializing Nanobar
    document.addEventListener('DOMContentLoaded', function() {
        // Check if the progress bar element exists before initializing
        var progressElement = document.getElementById('top-progress-bar');
        if (progressElement) {
            var options = {
              classname: 'nanobar',
              id: 'top-progress-bar'
            };
            var nanobar = new Nanobar(options);
            nanobar.go( 30 );  // Initial loading state
            nanobar.go( 76 );  // Partial completion
            nanobar.go(100);   // Complete loading
        } else {
            console.warn('Progress bar element #top-progress-bar not found. Skipping Nanobar initialization.');
        }
    });
</script>

Expected Outcome

• ✅ Nanobar should initialize without errors after DOM is ready
• ✅ Progress bar should display correctly at top of page
• ✅ No more appendChild TypeError in browser console
• ✅ Site should load normally with visual progress feedback

Test Status

Status: Fix implemented and deployed Jekyll Regeneration: Confirmed successful at 2025-09-27 12:36:26 Next Step: Verify fix by running debug session to confirm error resolution

Generated: 2025-09-27 12:36:45