Ionic is a popular framework for building mobile and web applications using HTML, CSS, and JavaScript. One of the essential components in Ionic is the toolbar, which provides a way to display headers, footers, and buttons on our application's UI. In this article, we will explore how to customize the Ionic toolbar by using named slots.

Named Slots

Named slots allow us to place content at specific positions within an element. For example, we can use slot="start" to place content at the beginning of an element, and slot="end" to place content at the end of an element.

In this article, we will create a custom navbar component that uses named slots to display buttons on either side of the title. We will also explore how to use multiple named slots in our custom component.

Custom Navbar Component

First, let's create our custom navbar component by creating a new file called custom-navbar.vue and adding the following code:

<template>
 <ion-toolbar color="primary">
 <ion-buttons slot="start">
 <slot name="first"></slot>
 </ion-buttons>
 <ion-title>{{ title }}</ion-title>
 <ion-buttons slot="primary">
 <slot name="second"></slot>
 </ion-buttons>
 </ion-toolbar>
</template>

<script>
export default {
 props: ['title']
}
</script>

In this code, we are creating a custom navbar component that has three parts: the start button area, the title area, and the end button area. We are using slot="start" to place the first button slot at the beginning of the navbar, and slot="primary" to place the second button slot in the middle.

Using Multiple Named Slots

Now, let's use our custom navbar component with multiple named slots:

<CustomNavbar title="USERS.NAME">
 <div slot="first">HELLO</div>
 <div slot="second">GOODBYE</div>
</CustomNavbar>

In this code, we are using the CustomNavbar component and passing a title as a prop. We are also placing two buttons inside the first and second named slots.

In this article, we have learned how to customize the Ionic toolbar by using named slots. We have created a custom navbar component that uses multiple named slots to display buttons on either side of the title. By using named slots, we can easily customize the layout of our application's UI and create complex layouts with ease.

Reference

For more information on named slots in Ionic, please refer to the official Ionic documentation: https://ionicframework.com/docs/api/toolbar

Note: The code examples provided in this article are written in Vue.js, but the concepts can be applied to other frameworks as well.