Article directory
I. Introduction
In Vuethe project development process, the family bucket is used to vue-routerrealize the routing jump, and the page forward and backward jump processes correspond to different switching animations. vue-routerHow to set transition animation when switching pages?
First, the following questions need to be considered:
- How to judge whether it is forward or backward when switching routes?
- How to switch animation left to right every time you switch?
It can be realized through the following solutions:
define levels for each page, and determine which level of page the user enters when switching routes. Animate forward if the user enters a higher-level route, and animate back if the user exits a lower-level route.
2. Implementation of the plan
// router/index.js
import VueRouter from 'vue-router'
import Home from '../components/home/home'
import User from '../components/user/user'
var router = new VueRouter({
routes:[{
name:'test',
path:'/',
meta:{
index:0},//meta对象的index用来定义当前路由的层级,由小到大,由低到高
component:{
template:'<div>test</div>'
}
},{
name:'home',
path:'/home',
meta:{
index:1},
component:Home
},{
name:'user',
path:'/user/:id',
meta:{
index:2},
component:User
}]
});
Monitor the routing jump through watchthe monitoring function, judge the hierarchical relationship between the switching pages, and use this to judge whether the routing is forward or backward.
<template>
<div id="app">
<transition :name="transitionName">
<router-view></router-view>
</transition>
</div>
</template>
<script>
export default {
name: 'App',
data(){
return {
transitionName:''
}
},
watch: {
//使用watch 监听$router的变化
$route(to, from) {
//如果to索引大于from索引,判断为前进状态,反之则为后退状态
if(to.meta.index > from.meta.index){
//设置动画名称
this.transitionName = 'slide-left';
}else{
this.transitionName = 'slide-right';
}
}
}
}
</script>
<style>
// 编写slide-left 和 slide-right 类的动画
.slide-right-enter-active,
.slide-right-leave-active,
.slide-left-enter-active,
.slide-left-leave-active {
will-change: transform;
transition: all 500ms;
position: absolute;
}
.slide-right-enter {
opacity: 0;
transform: translate3d(-100%, 0, 0);
}
.slide-right-leave-active {
opacity: 0;
transform: translate3d(100%, 0, 0);
}
.slide-left-enter {
opacity: 0;
transform: translate3d(100%, 0, 0);
}
.slide-left-leave-active {
opacity: 0;
transform: translate3d(-100%, 0, 0);
}
</style>
3. Extended reading transition label
transitionThe tag is a built-in animation tag that is responsible for adding styles to elements when Vueinserting, updating, and removing elementsDOM
Note: transitionThe label can only contain one element, and the included label needs to be set v-if/v-showto control the display of the element
Animation style class name
Vue2
enters: .v-enterstart state, .v-enter-activeenter animation, .v-enter-toend state
Leave: .v-leavestart state, .v-leave-activeleave animation, v-leave-toend state
Vue3
enters: .v-enter-fromstart state, .v-enter-activeenter animation, .v-enter-toend state
Leave: .v-leave-fromstart state, .v-leave-activeleave animation, .v-leave-toend state
