Instruction: Describe the process of creating a custom directive in Vue.js, including an example.
Context: This question assesses the candidate's ability to extend Vue.js's built-in functionality with custom directives, demonstrating a deeper understanding of Vue.js internals.
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First, let's clarify what a directive is in the context of Vue.js. A directive is a special token in the markup that tells the library to do something to a DOM element. While Vue comes with a set of essential directives like v-model and v-show, there are cases where you need something specific that Vue doesn't offer out of the box. That's where custom directives come in.
To create a custom directive in Vue, you generally follow these steps:...