After transitioning from Bootstrap 4 to Bootstrap 5 and encountering navigation issues on smaller screens, I delved into the code to uncover the source of the problem. It turns out that the collapse button in the navbar wasn't functional due to conflict with the Javascript required by E-junkie for the shopping cart feature.
A closer inspection using Firefox developer tools revealed an error message when attempting to click the button:
Uncaught TypeError: n.Event is not a function
trigger event-handler.js:274
show collapse.js:129
toggle collapse.js:107
<anonymous> collapse.js:287
n event-handler.js:118
event-handler.js:274:22
trigger event-handler.js:274
show collapse.js:129
toggle collapse.js:107
<anonymous> collapse.js:287
n event-handler.js:118
Despite the clarity of the error message, I remained puzzled about its origin.
While referencing the full example below, it became apparent that commenting out the specific line related to the E-junkie script allowed the collapse button to work as intended, albeit rendering the shopping cart dysfunctional.
Upon scrutinizing the Javascript content provided by E-junkie, my objective was to make necessary adjustments for compatibility with Bootstrap 5.
Update: Removal of redundant lines in the script did not resolve the issue, even when integrated directly into the code snippet without those lines. Furthermore, eliminating the "View Cart" button from the navbar failed to eliminate the problem entirely. It appears that triggering the collapse functionality inadvertently triggers the E-junkie script, leading to undesired consequences that require further analysis.