Description: The Directive Modifier in Vue.js is a powerful tool that allows developers to modify the behavior of Vue directives in a more flexible and dynamic way. Directives are special attributes used to bind the DOM to Vue’s data model, and modifiers allow for adjustments to their functionality without the need to create new directives. For instance, a modifier can change the behavior of an input directive to only accept numbers or to apply only on specific events. This customization capability is crucial for creating interactive and reactive applications, as it enables developers to tailor directives to the specific needs of their applications. Modifiers are represented with a dot followed by the modifier name and can be used in combination with other directives to achieve more complex effects. In summary, the Directive Modifier is an essential feature of Vue.js that enhances versatility and efficiency in user interface development.