Scoped slots are a powerful feature in Vue.js that allow you to pass data from a parent component to a child component, while also allowing the child component to manipulate that data in its own unique way. In this tutorial, we will explore how to use scoped slots in Vue.js by creating a simple example.
Firstly, let’s create our parent component. We will call it “ParentComponent”. It will have a simple template and some data that we will pass to the child component using scoped slots.
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“`html
Parent Component
{{slotProps.item}}
import ChildComponent from ‘./ChildComponent.vue’
export default {
components: {
ChildComponent
},
data() {
return {
items: [‘item1’, ‘item2’, ‘item3’]
}
}
}
“`
In this code, we have imported our child component and passed an array of items as props. We have also used the “ tag with the `v-slot` directive to create a slot for our child component. The `v-slot:item` syntax means that we are creating a slot named “item”, which is what our child component will use to access the data being passed from the parent.
Now let’s create our child component. We will call it “ChildComponent”. It will have its own template and logic for manipulating the data being passed from the parent.
“`html
Child Component
export default {
props: [‘items’]
}
“`
In this code, we have used a `v-for` loop to iterate over the array of items passed from the parent. We have also used the “ tag with the `name` attribute set to “item” to access the data being passed from the parent. We are passing the current item as a prop named “item” using the `:item` syntax.
Now let’s take a moment to understand how scoped slots work. When we use a scoped slot, we are essentially creating a “slot template” that can be filled with content by the child component. In our example, we have created a slot template named “item” in our parent component, and filled it with content in our child component.
The beauty of scoped slots is that they allow us to pass data from a parent component to a child component in a way that is flexible and dynamic. The child component can manipulate this data however it wants, without affecting other parts of the application.
Let’s look at some examples of how we can manipulate this data using scoped slots.
Firstly, let’s say we want to display our items in uppercase letters. We can do this by modifying our child component template as follows:
“`html
Child Component
In this code, we are using the `toUpperCase()` method to transform each item into uppercase letters before passing it to the slot. This will result in our items being displayed in uppercase in the parent component.
Now let’s say we want to display our items with a checkbox next to each one. We can do this by modifying our child component template as follows:
“`html
Child Component
In this code, we have added an input checkbox and label for each item using the `v-for` loop. We have also used the `:id` and `:for` attributes to ensure that each label is associated with its corresponding checkbox. Finally, we have wrapped our slot content inside a label tag so that when the user clicks on the label, it will toggle the checkbox.
Scoped slots are a powerful feature in Vue. In this tutorial, we have explored how to use scoped slots by creating a simple example and modifying it in different ways. With scoped slots, your Vue.js applications can be more flexible and dynamic than ever before!
