vue-router 手势滑动触发返回功能_vue.js

<template> <div id="app" v-on:touchstart="bodyTouchStart" v-on:touchmove="bodyTouchMove" v-on:touchend="bodyTouchEnd"> <transition :name="direction">  <keep-alive include="home">  <router-view class="appView"></router-view>  </keep-alive> </transition> </div></template><script>var swidth = document.documentElement.clientWidth;export default { name: 'app', data: () => ({ // direction 页面切换的过渡动画，配合transition组件使用 direction: "slide-left", // touchLeft 划动起点界限，起点在靠近屏幕左侧时才有效 touchLeft: swidth*2/5, // touchStartPoint 记录起始点X坐标 touchStartPoint: 0, // distance 记录划动的距离 distance: 0, // 回退按钮的dom，根据页面上是否存在此dom来判断该路由是否可回退 backBtn: null }), watch: { // 监听路有变化，决定页面过渡动画 $route(to, from) {  if (from.name == "login" || from.path.indexOf("home") > -1) {  this.direction = "slide-left";  } else if (to.path.indexOf("home") > -1) {  this.direction = "slide-right";  } else {  const toDepth = to.path.split("/").length;  const fromDepth = from.path.split("/").length;  this.direction = toDepth < fromDepth ? "slide-right" : "slide-left";  } } }, methods: { bodyTouchStart: function(event) {  this.backBtn = document.getElementById("navback");  if (this.backBtn) {  // 获得起点X坐标，初始化distance为0  this.touchStartPoint = event.targetTouches[0].pageX;  this.distance = 0;  } }, bodyTouchMove: function(event) {  if (this.backBtn && this.touchStartPoint < this.touchLeft) {  // 只监听单指划动，多指划动不作响应  if (event.targetTouches.length > 1) {   return;  }  // 实时计算distance  this.distance = event.targetTouches[0].pageX - this.touchStartPoint;  // 根据distance在页面上做出反馈。这里演示通过返回按钮的背景变化作出反馈  if (this.distance > 0 && this.distance < 100) {   this.backBtn.style.backgroundPosition = ((this.distance - 100) / 100) * 50 + "px 0";  } else if (this.distance >= 100) {   this.backBtn.style.backgroundPosition = "0 0";  } else {   this.backBtn.style.backgroundPosition = "-50px 0";  }  } }, bodyTouchEnd: function(event) {  if (this.backBtn && this.touchStartPoint < this.touchLeft) {  // 划动结束，重置数据  this.touchStartPoint = 0;  this.backBtn.style.backgroundPosition = "-50px 0";  // 当划动距离超过100px时，触发返回事件  if (this.distance > 100) {   // 返回前修改样式，让过渡动画看起来更快   document.getElementById("app").classList.add("quickback");   this.$router.back();   setTimeout(function(){   document.getElementById("app").classList.remove("quickback");   },250)  }  } } }}</script><style>#app { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; width: 100%; overflow-x: hidden;}.appView { position: absolute; width: 100%; background: #fff; min-height: 100vh; transition: transform 0.24s ease-out;}#app.quickback .appView{ transition-duration: 0.1s;}.slide-left-enter { transform: translate(100%, 0);}.slide-left-leave-active { transform: translate(-50%, 0);}.slide-right-enter { transform: translate(-50%, 0);}.slide-right-leave-active { transform: translate(100%, 0);}</style>

import { swiper, swiperSlide } from 'vue-awesome-swiper';components: { swiper, swiperSlide,},data() { return { swiperOption: {  width: window.innerWidth,  zoom : true,  initialSlide: 0, }, };},<swiper :options="swiperOption" ref="imgOverview" style="height: 100%;"> <swiper-slide v-for="(img, index) in previewImg"> <div class="swiper-zoom-container">  <img :src="img" alt=""> </div> </swiper-slide></swiper>