What are the best practices for using directives in Vue.js?

What are the best practices for using directives in Vue.js?

When using directives in Vue.js, it's important to keep your code clean and maintainable. Here are some best practices:

1. Use built-in directives when possible (like v-if, v-for).
2. Create custom directives only when necessary.
3. Keep directive logic simple and focused.
4. Use camelCase for directive names in JavaScript and kebab-case in templates.

Can you give an example of a custom directive?

Sure! Here's a simple example of a custom directive that changes the text color:

Vue.directive('color', {
  bind(el, binding) {
    el.style.color = binding.value;
  }
});

You can use it in your template like this:

<p v-color="'red'">This text will be red.</p>

What should I avoid when creating custom directives?

Avoid overcomplicating your directives. They should not handle too much logic or manipulate the DOM in complex ways. Also, try to avoid using custom directives for tasks that can be accomplished with existing Vue features like components or computed properties.

How do directives differ from components?

Directives are used to manipulate the DOM directly, while components are reusable Vue instances with their own template, data, and logic. Components are generally preferred for complex UI elements, while directives are best for low-level DOM manipulations.