Issues in script.js

[Avi200618]

Here’s a list of issues found in the original JavaScript code without providing fixes:

1. Variable Declaration:

   • The variable $t is assigned without using var, let, or const, which can lead to unintended global scope.

2. Missing Semicolons:

   • Several lines in the code are missing semicolons, potentially causing issues in JavaScript execution.

3. Duplicate Event Listeners:

   • The event listener for #card-holder is defined twice, which leads to redundant event handling.

4. Unnecessary Space in card_number:

   • The concatenation of card_number includes an extra space at the end, leading to an improperly formatted output.

5. Empty setTimeout Block:

   • The setTimeout function is defined but contains no meaningful code or comment, making it unclear why it's there.

6. Consistency in Variable Declarations:

   • Implicit and explicit declarations are mixed, leading to inconsistent coding practices.

7. Inefficient Focus Logic:

   • The logic for moving the focus based on input length might lead to an unexpected user experience, as it doesn't account for user corrections or deletions effectively.

8. Potential Global Variable Usage:

   • The use of $t without declaration in some places risks creating a global variable if not handled properly.

These issues can affect code readability, maintainability, and functionality.