JavaScript Not Functioning Properly - Occasional Stuck Behavior

`The JavaScript functionality within the project is currently experiencing intermittent issues. Specifically, the code tends to get stuck or becomes unresponsive in certain situations, which impacts the overall user experience.`

**Issue**: Some JavaScript functions do not trigger or complete as expected, leading to incomplete operations or unexpected results. The numbers don't execute the operation made by the user.
**Problem Overview**
The JavaScript code within the project isn't functioning as expected. Certain parts of the code are getting stuck or not executing properly, causing delays and unexpected behavior in the application.
**Root Cause**
The problem appears to have occurred because not all necessary variables were declared. This has likely led to undefined behavior, causing functions to get stuck or return incorrect results. Ensuring that all required variables are properly declared and initialized should resolve these issues.
**Steps to Reproduce**
Navigate to the [specific section or page] of the application.
Perform [specific action] that triggers the [function name or component].
Observe the behavior and note any delays, errors, or stuck processes.
Make sure every variable was declared properly.
**Additional Context**
This issue seems to affect all users who interact with this specific JavaScript code.
[If applicable] Previous versions of the code did not have this issue, indicating that a recent change may have introduced the problem.
**Expected Behavior**
_The JavaScript functions should execute smoothly, handling all the inputs and processes without any interruption or delay. The output should be consistent and align with the specified requirements._