Migrating From ion-slides to Swiper.js
ion-slides?ion-slides was deprecated in v6.0.0 and removed in v7.0.0. We recommend using the Swiper.js library directly. The migration process is detailed below.
We recommendSwiper.js if you need a modern touch slider component. This guide will go over how to get Swiper for Vue set up in your Ionic Framework application. It will also go over any migration information you may need to move fromion-slides to the official Swiper Vue integration.
Swiper's Vue component is set to be removed in a future release of Swiper, withSwiper Element as the replacement. However, this guide shows how to migrate to the Vue component because it provides the most stable experience at the time of writing.
Using Swiper's Vue component isnot required to use Swiper.js with Ionic Framework.
Getting Started
First, update to the latest version of Ionic:
npm install @ionic/vue@latest @ionic/vue-router@latest
We recommend upgrading to Vue CLI 5 for better compatibility with Swiper:
vue upgrade --next
Once that is done, install the Swiper dependency in your project:
npm install swiper@latest
Swiping with Style
Next, we need to import the base Swiper styles. We are also going to import the styles that Ionic provides which will let us customize the Swiper styles using the same CSS Variables that we used withion-slides.
We recommend importing the styles in the component in which Swiper is being used. This ensures that the styles are only loaded when needed:
<scriptsetuplang="ts">
import'swiper/css';
import'@ionic/vue/css/ionic-swiper.css';
</script>
Importing@ionic/vue/css/ionic-swiper.css isnot required to use Swiper.js with Ionic. This files is used for backward-compatibility with theion-slides component and can be safely omitted if you prefer not to use the CSS Variables provided in the stylesheet.
Updating Selectors
Previously, we were able to targetion-slides andion-slide to apply any custom styling. The contents of those style blocks remain the same, but we need to update the selectors. Below is a list of selector changes when going fromion-slides to Swiper Vue:
| ion-slides Selector | Swiper Selector |
|---|---|
ion-slides | .swiper |
ion-slide | .swiper-slide |
Pre-processors (optional)
For developers using SCSS or Less styles, Swiper also provides imports for those files.
For Less styles, replacecss withless in the Swiper import path:
import'swiper/less';
import'@ionic/vue/css/ionic-swiper.css';
For SCSS styles replacecss withscss in the Swiper import path:
import'swiper/scss';
import'@ionic/vue/css/ionic-swiper.css';
Using Components
Swiper exports two components:Swiper andSwiperSlide. TheSwiper component is the equivalent ofIonSlides, andSwiperSlide is the equivalent ofIonSlide.
These components are imported fromswiper/vue and provided to your Vue component:
<template>
<ion-page>
<ion-content>
<swiper>
<swiper-slide>Slide 1</swiper-slide>
<swiper-slide>Slide 2</swiper-slide>
<swiper-slide>Slide 3</swiper-slide>
</swiper>
</ion-content>
</ion-page>
</template>
<scriptsetuplang="ts">
import{Swiper,SwiperSlide}from'swiper/vue';
import{IonContent,IonPage}from'@ionic/vue';
import'swiper/css';
import'@ionic/vue/css/ionic-swiper.css';
</script>
Using Modules
By default, Swiper for Vue does not import any additional modules. To use modules such as Navigation or Pagination, you need to import them first.
ion-slides automatically included the Pagination, Scrollbar, Autoplay, Keyboard, and Zoom modules. This part of the guide will show you how to install these modules.
To begin, we need to import the modules and their corresponding CSS files from theswiper package:
<template>
<ion-page>
<ion-content>
<swiper>
<swiper-slide>Slide 1</swiper-slide>
<swiper-slide>Slide 2</swiper-slide>
<swiper-slide>Slide 3</swiper-slide>
</swiper>
</ion-content>
</ion-page>
</template>
<scriptsetuplang="ts">
import{Autoplay,Keyboard,Pagination,Scrollbar,Zoom}from'swiper/modules';
import{Swiper,SwiperSlide}from'swiper/vue';
import{IonContent,IonPage}from'@ionic/vue';
import'swiper/css';
import'swiper/css/autoplay';
import'swiper/css/keyboard';
import'swiper/css/pagination';
import'swiper/css/scrollbar';
import'swiper/css/zoom';
import'@ionic/vue/css/ionic-swiper.css';
</script>
From here, we need to provide these modules to Swiper by using themodules property on theswiper component:
<template>
<ion-page>
<ion-content>
<swiper:modules="modules">
<swiper-slide>Slide 1</swiper-slide>
<swiper-slide>Slide 2</swiper-slide>
<swiper-slide>Slide 3</swiper-slide>
</swiper>
</ion-content>
</ion-page>
</template>
<script>
import{Autoplay,Keyboard,Pagination,Scrollbar,Zoom}from'swiper/modules';
import{Swiper,SwiperSlide}from'swiper/vue';
import{IonContent,IonPage}from'@ionic/vue';
import'swiper/css';
import'swiper/css/autoplay';
import'swiper/css/keyboard';
import'swiper/css/pagination';
import'swiper/css/scrollbar';
import'swiper/css/zoom';
import'@ionic/vue/css/ionic-swiper.css';
const modules=[Autoplay,Keyboard,Pagination,Scrollbar,Zoom];
</script>
Finally, we can turn these features on by using the appropriate properties:
<template>
<ion-page>
<ion-content>
<swiper:modules="modules":autoplay="true":keyboard="true":pagination="true":scrollbar="true":zoom="true">
<swiper-slide>Slide 1</swiper-slide>
<swiper-slide>Slide 2</swiper-slide>
<swiper-slide>Slide 3</swiper-slide>
</swiper>
</ion-content>
</ion-page>
</template>
<script>
import{Autoplay,Keyboard,Pagination,Scrollbar,Zoom}from'swiper/modules';
import{Swiper,SwiperSlide}from'swiper/vue';
import{IonContent,IonPage}from'@ionic/vue';
import'swiper/css';
import'swiper/css/autoplay';
import'swiper/css/keyboard';
import'swiper/css/pagination';
import'swiper/css/scrollbar';
import'swiper/css/zoom';
import'@ionic/vue/css/ionic-swiper.css';
const modules=[Autoplay,Keyboard,Pagination,Scrollbar,Zoom];
</script>
Seehttps://swiperjs.com/vue#usage for a full list of modules.
The IonicSlides Module
Withion-slides, Ionic automatically customized dozens of Swiper properties. This resulted in an experience that felt smooth when swiping on mobile devices. We recommend using theIonicSlides module to ensure that these properties are also set when using Swiper directly. However, using this module isnot required to use Swiper.js in Ionic.
It is recommended to review theproperties set byIonicSlides and determine which ones you would like to customize.
We can install theIonicSlides module by importing it from@ionic/vue and passing it in as the last item in themodules array:
<template>
<ion-page>
<ion-content>
<swiper:modules="modules":autoplay="true":keyboard="true":pagination="true":scrollbar="true":zoom="true">
<swiper-slide>Slide 1</swiper-slide>
<swiper-slide>Slide 2</swiper-slide>
<swiper-slide>Slide 3</swiper-slide>
</swiper>
</ion-content>
</ion-page>
</template>
<scriptsetuplang="ts">
import{Autoplay,Keyboard,Pagination,Scrollbar,Zoom}from'swiper/modules';
import{Swiper,SwiperSlide}from'swiper/vue';
import{IonContent,IonPage,IonicSlides}from'@ionic/vue';
import'swiper/css';
import'swiper/css/autoplay';
import'swiper/css/keyboard';
import'swiper/css/pagination';
import'swiper/css/scrollbar';
import'swiper/css/zoom';
import'@ionic/vue/css/ionic-swiper.css';
const modules=[Autoplay,Keyboard,Pagination,Scrollbar,Zoom,IonicSlides];
</script>
TheIonicSlides module must be the last module in the array. This will let it automatically customize the settings of modules such as Pagination, Scrollbar, Zoom, and more.
Properties
Swiper options are provided as props directly on the<swiper> component rather than via theoptions object inion-slides.
Let's say in an app withion-slides we had theslidesPerView andloop options set:
<template>
<ion-slides:options="{ slidesPerView: 3, loop: true }">
<ion-slide>Slide 1</ion-slide>
<ion-slide>Slide 2</ion-slide>
<ion-slide>Slide 3</ion-slide>
</ion-slides>
</template>
To migrate, we would move these options out of theoptions object and onto the<swiper> component directly as properties:
<template>
<swiper:slides-per-view="3":loop="true">
<swiper-slide>Slide 1</swiper-slide>
<swiper-slide>Slide 2</swiper-slide>
<swiper-slide>Slide 3</swiper-slide>
</swiper>
</template>
Below is a full list of property changes when going fromion-slides to Swiper Vue:
| Name | Notes |
|---|---|
| options | Set each option as a property directly on the<swiper> component. |
| mode | For different styles based upon the mode, you can target the slides with.ios .swiper or.md .swiper in your CSS. |
| pager | Use thepagination property instead. Requires installation of the Pagination module. |
| scrollbar | You can continue to use thescrollbar property, just be sure to install the Scrollbar module first. |
All properties available in Swiper Vue can be found athttps://swiperjs.com/vue#swiper-props.
Events
Since theSwiper component is not provided by Ionic Framework, event names will not have anionSlide prefix to them.
Let's say in an app withion-slides we used theionSlideDidChange event:
<template>
<ion-slides@ionSlideDidChange="onSlideChange">
<ion-slide>Slide 1</ion-slide>
<ion-slide>Slide 2</ion-slide>
<ion-slide>Slide 3</ion-slide>
</ion-slides>
</template>
To migrate, we would change the name of the event toslideChange:
<template>
<swiper@slideChange="onSlideChange">
<swiper-slide>Slide 1</swiper-slide>
<swiper-slide>Slide 2</swiper-slide>
<swiper-slide>Slide 3</swiper-slide>
</swiper>
</template>
Below is a full list of event name changes when going fromion-slides to Swiper Vue:
| ion-slides Event | Swiper Event |
|---|---|
ionSlideWillChange | slideChangeTransitionStart |
ionSlideDidChange | slideChangeTransitionEnd |
ionSlideDoubleTap | doubleTap |
ionSlideDrag | sliderMove |
ionSlideNextStart | slideNextTransitionStart |
ionSlideNextEnd | slideNextTransitionEnd |
ionSlidePrevStart | slidePrevTransitionStart |
ionSlidePrevEnd | slidePrevTransitionEnd |
ionSlideReachStart | reachBeginning |
ionSlideReachEnd | reachEnd |
ionSlideTap | tap |
ionSlideTouchStart | touchStart |
ionSlideTouchEnd | touchEnd |
ionSlideTransitionStart | transitionStart |
ionSlideTransitionEnd | transitionEnd |
ionSlidesDidLoad | init |
All events available in Swiper Vue can be found athttps://swiperjs.com/vue#swiper-events.
Methods
Most methods have been removed in favor of accessing the<swiper> props directly. Additionally, you no longer need to access$el first when calling methods.
Accessing these properties can be tricky as you want to access the properties on the Swiper instance itself, not your Vue component. To do this, we recommend getting a reference to the Swiper instance via the@swiper event handler:
<template>
<swiper@swiper="setSwiperInstance"> ...</swiper>
</template>
<scriptsetuplang="ts">
import{ ref}from'vue';
const slides=ref();
constsetSwiperInstance=(swiper: any)=>{
slides.value= swiper;
};
</script>
From here, if you wanted to access a property on the Swiper instance you would accessslides.value. For example, if you wanted to check theisBeginning property, you could do:slides.value.isBeginning. Make sureslides.value is defined first though!
Below is a full list of method changes when going fromion-slides to Swiper Vue:
| ion-slides Method | Notes |
|---|---|
getActiveIndex() | Use theactiveIndex property instead. |
getPreviousIndex() | Use thepreviousIndex property instead. |
getSwiper() | Get a reference to the Swiper instance using@swiper. See example above. |
isBeginning() | Use theisBeginning property instead. |
isEnd() | Use theisEnd property instead. |
length() | Use theslides property instead. (i.e swiperRef.slides.length) |
lockSwipeToNext() | Use theallowSlideNext property instead. |
lockSwipeToPrev() | Use theallowSlidePrev property instead. |
lockSwipes() | Use theallowSlideNext,allowSlidePrev, andallowTouchMove properties instead. |
startAutoplay() | Use theautoplay property instead. |
stopAutoplay() | Use theautoplay property instead. |
Effects
If you are using effects such as Cube or Fade, you can install them just like we did with the other modules. In this example, we will use the fade effect. To start, we will importEffectFade fromswiper and provide it in themodules array:
<template>
<ion-page>
<ion-content>
<swiper:modules="modules">
<swiper-slide>Slide 1</swiper-slide>
<swiper-slide>Slide 2</swiper-slide>
<swiper-slide>Slide 3</swiper-slide>
</swiper>
</ion-content>
</ion-page>
</template>
<script>
import{EffectFade}from'swiper/modules';
import{Swiper,SwiperSlide}from'swiper/vue';
import{IonContent,IonPage,IonicSlides}from'@ionic/vue';
import'swiper/css';
import'@ionic/vue/css/ionic-swiper.css';
const modules=[EffectFade,IonicSlides];
</script>
Next, we need to import the stylesheet associated with the effect:
<template>
<ion-page>
<ion-content>
<swiper:modules="modules">
<swiper-slide>Slide 1</swiper-slide>
<swiper-slide>Slide 2</swiper-slide>
<swiper-slide>Slide 3</swiper-slide>
</swiper>
</ion-content>
</ion-page>
</template>
<script>
import{EffectFade}from'swiper/modules';
import{Swiper,SwiperSlide}from'swiper/vue';
import{IonContent,IonPage,IonicSlides}from'@ionic/vue';
import'swiper/css';
import'swiper/css/effect-fade';
import'@ionic/vue/css/ionic-swiper.css';
const modules=[EffectFade,IonicSlides];
</script>
After that, we can activate it by setting theeffect property onswiper to"fade":
<template>
<ion-page>
<ion-content>
<swiper:modules="modules"effect="fade">
<swiper-slide>Slide 1</swiper-slide>
<swiper-slide>Slide 2</swiper-slide>
<swiper-slide>Slide 3</swiper-slide>
</swiper>
</ion-content>
</ion-page>
</template>
<script>
import{EffectFade}from'swiper/modules';
import{Swiper,SwiperSlide}from'swiper/vue';
import{IonContent,IonPage,IonicSlides}from'@ionic/vue';
import'swiper/css';
import'swiper/css/effect-fade';
import'@ionic/vue/css/ionic-swiper.css';
const modules=[EffectFade,IonicSlides];
</script>
For more information on effects in Swiper, please seehttps://swiperjs.com/vue#effects.
Wrap Up
Now that you have Swiper installed, there is a whole set of new Swiper features for you to enjoy. We recommend starting with theSwiper Vue Introduction and then referencingthe Swiper API docs.
FAQ
Where can I find an example of this migration?
You can find a sample app withion-slides and the equivalent Swiper usage athttps://github.com/ionic-team/slides-migration-samples.
Where can I get help with this migration?
If you are running into issues with the migration, please create a post on theIonic Forum.
Where do I file bug reports?
Before opening an issue, please consider creating a post on theSwiper Discussion Board or theIonic Forum to see if your issue can be resolved by the community.
If you are running into problems with the Swiper library, new bugs should be filed on the Swiper repo:https://github.com/nolimits4web/swiper/issues
If you are running into problems with theIonicSlides module, new bugs should be filed on the Ionic Framework repo:https://github.com/ionic-team/ionic-framework/issues