Vue transition on router - but transition effects specific html Element - vue.js

Question

I have a page transition for VUE js that I have implemented. I did this manually because I could not find how to do this using VUES transition.
(I am using gridsome framework for vue js - I have added a custom App.vue page - which should allow transitions of gridsome to act like normal Vue js transitions)
I feel like what I have done is bloated for its use case so wanted to see if anyone knew how to implement this using vue transtions.
#1
Users click component (which has a #click - triggering a this.$router.push() to the route)
#2
A div pops over the screen in the color of that component, creating a nice fade to hide the transition
#3
On the new page, another div identical to the transition one, now exits the screen.
I have this working here for reference, just click on clients (please try not to judge me to much, its still in development) -
https://wtwd.ninjashotgunbear.com/
MY METHOD:
Index.html
Each component is a SectionTitle when the user clicks on one of them they $emit the specific obj with the data for that page (such as the color && the name of the page to be routed to) - this is the #routeChange="reRoute($event) seen below:
<template>
<Layout>
<div class="navs" v-for="section in sections" :key="section.sectionTitle">
<!-- On click delay for screen to come ove top -->
<!-- router to be put here -->
<SectionTitle :data="section" #routeChange="reRoute($event)"/> <<<< COMPONENT that $emits on click
</div>
<!-- fullpage div to slide in and cover up no leave transition -->
<div class="leaveScreen"></div> <<<<< DIV that covers the screen
</Layout>
</template>
This triggers my method that moves the div over the UI view and creates the transition effect:
methods:{
reRoute(value){
console.log(value)
// 1) animate the loading screen
let screen = document.querySelector('.leaveScreen');
screen.style.cssText=`background: ${value.backgroundColor}; left: 0%`;
// 2) re-route the page
setTimeout(()=>{
this.$router.push(value.sectionLink)
}, 700)
}
}
CSS FOR DIV :
.leaveScreen {
position: absolute;
top: 0;
bottom: 0;
left: -100%;
width: 100%;
z-index: 11;
// background color added by the fn reRoute()
transition: all 0.7s;
}
The on the page, I use the mounted hook to remove the div from the users view (in the same, but other way around, way that I added it above.
mounted(){
let screen = document.querySelector('.fadeOutScreen');
// set timeout works to delay
setTimeout(()=>{
screen.style.cssText='left: 100%;'
},700)
}
If you know how to do this in a cleaner code / or by using VUES transition property then your help is very welcomed. I figured that VUE would have a specific way of doing this, but have not found it yet.
Thanks in advance -
W

Answer 1

If you wrap .leave-screen in a transition element you can do something like this:
new Vue({
el: "#app",
data: {
leaveScreen: false
}
})
body {
margin: 0;
}
.click-me {
cursor: pointer;
font-size: 30px;
}
.leave-screen {
position: absolute;
height: 100vh;
width: 100vw;
top: 0;
background-color: rgb(0, 0, 0);
}
.leave-screen-enter-active,
.leave-screen-leave-active {
background-color: rgba(0, 0, 0, 1);
transform: translateX(0);
transition: all 1s ease-in-out;
}
.leave-screen-leave-to,
.leave-screen-enter {
background-color: rgba(0, 0, 0, 0);
transform: translateX(-100%);
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<div id="app">
<div #click="leaveScreen = true" class="click-me">
Click Me
</div>
<transition name="leave-screen">
<div v-if="leaveScreen" class="leave-screen" #click="leaveScreen = false"></div>
</transition>
</div>
.leave-screen-enter-active and .leave-screen-leave-active define the state of the element during transition.
.leave-screen-leave-to is the state the element leaves to (surprisingly) and .leave-screen-enter is the state of the element before it enters.
The styles you set on the element itself are where the transition starts/ends (depending on whether it's entering/leaving).
Vue's definitions:
v-enter: Starting state for enter. Added before element is inserted, removed one frame after element is inserted.
v-enter-active: Active state for enter. Applied during the entire entering phase. Added before element is inserted, removed when transition/animation finishes. This class can be used to define the duration, delay and easing curve for the entering transition.
v-leave-active: Active state for leave. Applied during the entire leaving phase. Added immediately when leave transition is triggered, removed when the transition/animation finishes. This class can be used to define the duration, delay and easing curve for the leaving transition.
v-leave-to: Only available in versions 2.1.8+. Ending state for leave. Added one frame after a leaving transition is triggered (at the same time v-leave is removed), removed when the transition/animation finishes.