What are some advanced examples of Vue.js directives?

Can you provide some advanced examples of Vue.js directives?

Sure! One advanced example is using custom directives to handle complex DOM manipulations. For instance, you can create a directive that automatically focuses an input field when a component is mounted.

That sounds interesting! How would I implement that?

You can create a custom directive like this:

Vue.directive('focus', {
  // When the bound element is inserted into the DOM...
  inserted: function (el) {
    // Focus the element
    el.focus();
  }
});

Then, you can use it in your template like this:

<input v-focus />

What about using directives for animations?

Great question! You can create a directive that applies CSS animations based on certain conditions. For example, you can create a directive that adds a class for a fade-in effect when an element is inserted into the DOM.

Can you show me an example of that?

Absolutely! Here's a simple example:

Vue.directive('fade', {
  inserted: function (el) {
    el.classList.add('fade-in');
  }
});

And in your CSS, you would define the .fade-in class with the desired animation.