Implementation of rolling / carousel in Vue component development

Code Taoist 2021-05-03 02:05:46
implementation rolling carousel vue component


Recently, I came across a problem from a group of friends : There is no paging on the back end , What does the front end do ? Somehow , It reminds me of vue Medium computed coordination JS Set the number of elements and page The relationship between . I happened to be learning the third-party scrolling plug-in these two days :vue-awesome-swiper Use , So write an article to summarize .

Create project

First say , The author's 【 Code cloud 】, stay 【 Code > All branches 】 It's about , Click on 【 The new branch 】:


Then we go to the created project folder

Here I use Linux Environmental Science , If you want to use window The environment does the following , have access to git window !

Input :

git pull
git checkout Project name ( Here's what was created above index-icons)

Then go to the editor , open components Folder ( Here we create the components needed for the project ), New file Icons.vue: When the initial for

export default {
name: 'HomeIcons'
<style lang="stylus" scoped>

stay “ page ” Components Home.vue Introduce this component in :

<!-- stay template Medium div Add :-->
// stay script Add... To the tag :
import HomeIcons from './components/Icons.vue'
export default {
components: {

Now? , Let's officially start Icons.vue Compiling :

template and style Compiling

<div class="icons">
<swiper :options="swiperOption">
v-for="item of list"
<div class='icon-img'>
<img class='icon-img-content' :src='item.imgUrl' />
<p class="icon-desc">{{item.desc}}</p>
<style lang="stylus" scoped>
.icons >>> .swiper-container
height: 0
padding-bottom: 50%
margin-top: .1rem
position: relative
overflow: hidden
float: left
width: 25%
height: 0
padding-bottom: 25%
position: absolute
top: 0
left: 0
right: 0
bottom: .44rem
box-sizing: border-box
padding: .1rem
display: block
margin: 0 auto
height: 100%
position: absolute
left: 0
right: 0
bottom: 0
height: .44rem
line-height: .44rem
text-align: center
color: skyblue

About stylus, This is a css A branch of , About its download and in main.js There are a lot of documents in the Internet , Here I will not introduce .( Because it's common css Yes )

But there's a very important point to note in this code : In some places, instead of setting the height, they use padding-bottom Value as a percentage . On this point ,《CSS The world 》 There is such a sentence in" :“ When padding In percentage terms , What it means is actually div( Elements ) Aspect ratio .”

Let's move on to the next step , It's the most important step :

script Part of the compilation

We're on it template Such a tag was found in the code :


This is a third-party plug-in quoted by the author —— vue-awesome-swiper(GitHub Official website )

Its introduction is as follows :

npm install vue-awesome-swiper@2.6.7 --save

Then in the main configuration file main.js Import :

import VueAwesomeSwiper from 'vue-swesome-swiper'
import 'swiper/dist/css/swiper.css'

Then use it as above !( every last swiper-slide All for “ rolling ” Of “ One page ”)

As shown above , there img-src It has to be getting data from the back end —— So I use v-for Form traversal data Data in :

// js-data Code 
props: {
list: Array
data () {
return {
swiperOption: {
autoplay: false // Auto play ( rolling ) Options : close 

So far, , Most of the functions are done , But if data Put analog data in it There's a problem : You can't paginate ! And it's beyond 8 The next element will be hidden ( Set up here “ One page ” Yes 8 There are elements ).

It's not in line with our original intention —— Slide left and right ; It doesn't solve the problems in the summary : Front end paging .

Think of front-end paging , I think of using JS Judge the number of elements and page The relationship between , therefore , I think of it. vue Medium computed Compute properties :

// js-computed Code 
computed: {
pages () {
const pages = []
this.list.forEach((item, index) => {
const page = Math.floor(index / 8)
if (!pages[page]) {
pages[page] = []
return pages // must do return get out , To be quoted 

Then back template in , stay swiper-slide Add v-for loop , take v-for Medium “ Array name ” from list Change it to swiper-slide in for Of “ Cyclic element ”page!

<!--template Code modification part -->
<swiper-slide v-for="(page, index) of pages" :key="index">
v-for="item of page"
<div class='icon-img'>
<img class='icon-img-content' :src='item.imgUrl' />
<p class="icon-desc">{{item.desc}}</p>

Last , We're going to merge this branch 、 Submit it online :

git add .
git commit -m 'add icons'
git push
git checkout master
git push

Text optimization tips : The part beyond the specified length becomes “...”

To achieve this effect , Just add the following three items to the style section of the text CSS Style can be :

overflow: hidden;
white-space: nowrap;

Expand : Tabular “ Pagination ” load

It says 【 Carousel schema 】 The pagination of : We can take the back-end data out and store it in an array , Take... Out of the calculated properties “ Meet the requirements ” Data array of , And back to the page data .

But if this is one that needs to scroll down and load 【 Tabular 】 Pagination , And how to be at the front end “ Pagination ” Well ?

Actually , We can also use an array (a) Store data , And then every time I take out the first N Data Save to page data array (b) in , request “ The next page ” when , Again from a Array from b.length+1 At the beginning N Data .

本文为[Code Taoist]所创,转载请带上原文链接,感谢

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