How do you limit the scope of a directive?

#Ways to limit a directive's scope

1. Selector

• Choose the selector type so the directive applies only to specific elements.
• Examples:
  • Attribute: [appHighlight], only elements with this attribute.
  • Element: app-highlight, only that tag.
  • Class: .app-highlight, only elements with this class.

2. Module registration

• The directive works only within the module where it is declared in declarations, unless exported via exports.

3. Using standalone directives

• If the directive is declared as standalone: true, it can be imported only into the components or modules that need it, limiting its scope.

4. Conditions inside the directive

• You can check ElementRef or input parameters and apply behavior only to the elements that need it.

Conclusion: a directive's scope is controlled through its selector, module registration, and behavior conditions inside the directive.