What Is $Slots in Vue?

Vue.js is a popular JavaScript framework that has gained immense popularity among web developers for its simplicity and flexibility. One of the unique features of Vue.js is its built-in support for slots, which allows developers to create reusable components with dynamic content.

In this tutorial, we will explore what $slots in Vue is and how it can be used to create powerful and flexible components.

What are Slots in Vue?

Slots are a feature in Vue.js that allows developers to define placeholders in their component templates that can be filled with dynamic content at runtime. This allows for more flexible and reusable components as the content inside the slot can be changed without modifying the component itself.

The slots feature in Vue.js works by defining a named slot in a parent component that can then be filled with dynamic content from a child component. This dynamic content can include HTML elements, other components, or even text strings.

How to Use $Slots in Vue

To use $slots in Vue, start by creating a parent component that defines one or more named slots using the <slot> element. For example:

    <template>
        <div>
            <h1><slot name="title"></slot></h1>
            <p><slot name="content"></slot></p>
        </div>
    </template>

In this example, we have defined two named slots: “title” and “content”. These slots act as placeholders where dynamic content can be inserted at runtime.

Now, we can create a child component that fills these slots with dynamic content. To do this, we use the <template v-slot:> directive followed by the name of the slot we want to fill. For example:

    <template>
        <div>
            <parent-component>
                <template v-slot:title>
                    <h2>Dynamic Title</h2>
                </template>

                <template v-slot:content>
                    <p>Dynamic Content</p>
                </template>
            </parent-component>
        </div>
    </template>

In this example, we have created a child component that fills the “title” and “content” slots of the parent component with dynamic content.

Passing Data to Slots in Vue

In addition to filling slots with dynamic content, we can also pass data from the child component to the parent component through slots. To do this, we use the <slot :name="slotName"></slot> syntax to pass data from the child component to the parent component.

For example:

    <template v-slot:default="{ data }">
        {{ data }}
    </template>

    ..

    computed: {
        data() {
            return {
                message: "Hello World!"
            };
        }
    }

In this example, we are passing data from a computed property in the child component to a default named slot in the parent component. The curly braces around “data” indicate that we are destructuring an object and retrieving its “data” property.

Conclusion

$Slots in Vue is a powerful feature that allows developers to create flexible and reusable components with dynamic content. By defining named slots in a parent component and filling them with dynamic content from a child component, we can create components that can be easily customized and reused throughout our application.

By passing data through slots, we can also create components that are more dynamic and interactive. With $Slots in Vue, the possibilities are endless.