vueJS實作圖片橫向滑動的方法:1、使用npm安裝vue-awesome-swiper;2、在main.js中引用vue-awesome-swiper;3、使用swiper實現左右滑動切換圖片即可。
本文操作環境:windows7系統、vue2.9.6版,DELL G3電腦。
vueJS怎麼實現圖片橫向滑動?
vue使用swiper實作左右滑動切換圖片:
#使用npm 安裝vue-awesome-swiper
npm install vue-awesome-swiper --save
在main.js中引用
import VueAwesomeSwiper from 'vue-awesome-swiper' Vue.user(VueAwesomeSwiper) import 'swiper/dist/css/swiper.css'
在元件中使用
<template> <div> <label>{{ time }}</label> <div id="star-pic-vue"> <template v-if="data"> <img e v-for="(item, index) in images" :src="item.url" :key="index" id="contract_url" @click="enlargePic(index)" /> <template v-if="isDialogShow"> </template> <el-dialog :visible.sync="centerDialogVisible" width="100%" modal close-on-click-modal custom-class="dialog" > <swiper :options="swiperOption" ref="mySwiper" style="height: 100%;"> <swiper-slide v-for="(img, index) in images" :key="index"> <div> <img :src="img.url" alt="" /> </div> </swiper-slide> </swiper> </el-dialog> </template> </div> </div> </template> <script> import { swiper, swiperSlide } from "vue-awesome-swiper"; export default { name: "PictureComponent", props: ["data", "maxShow", "time"], data() { return { centerDialogVisible: false, showPic: "", isDialogShow: false, activeIndex: 1, startX: 0, swiperOption: { width: window.innerWidth, zoom: true, initialSlide: 0 } }; }, computed: { images() { if (this.data instanceof Array && this.data.length > 2) { var value = this.data; return value.splice(0, this.maxShow); } else { return this.data; } } }, components: { swiper, swiperSlide }, methods: { // 放大图片 enlargePic(i) { this.activeIndex = i; this.isDialogShow = true; // 使用$refs,如果ref是定位在有v-if、v-for、v-show中的DOM节点, // 返回来的只能是undefined,因为在mounted阶段他们根本不存在 this.$nextTick(() => { var swiper = this.$refs.mySwiper.swiper; swiper.activeIndex = i; }); this.centerDialogVisible = true; } } }; </script> <style> .timeline { display: block; margin: 10px 20px 5px; } #star-pic-vue .el-dialog__wrapper { position: fixed; top: 0; right: 0; bottom: 0; left: 0; overflow: auto; margin: 0; background: #171717; } #star-pic-vue { width: 100%; height: auto; display: flex; flex-wrap: wrap; justify-content: stretch; padding: 3px 13px; img { width: 82px; height: 80px; margin: 4px 0px 0px; padding-right: 2px; } .dialog { img { width: 100%; height: 100%; margin: 0; } } .el-carousel__item h3 { color: #475669; font-size: 18px; opacity: 0.75; line-height: 300px; margin: 0; height: 100%; width: 100%; } .el-dialog__header { display: none; } .el-dialog__body { padding: 0 !important; margin: 0 !important; height: 460px; background: #171717; } .el-carousel { height: 100%; } .el-carousel__container { height: 410px; } .el-carousel__indicators--outside { margin-top: 20px; } } </style>
效果
#$refs定位不到的主要原因是因為v-if、v -for、v-show這些語句如果依賴父元件傳來的參數的話,該參數是在mounted()階段子還沒取得。
如果想要真正在DOM載入完成後拿到數據,就需要呼叫VUE的全域api : this.$nextTick(() => {})
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