引入组件文件
写一个文件放在components里面
在需要时进行调用它
但是呢 vue3当中怎么拿到呢 请往下看 ==============
content
这个文件是放在component的文件
!<template>
<div>
110
</div>
</template>
<script lang='ts'>
import { reactive,toRefs,onBeforeMount,onMounted,} from 'vue'
import { useRouter,useRoute} from 'vue-router'
export default {
name: '',
setup() {
let router = useRouter(),route = useRoute();
const data= reactive({
})
onBeforeMount(() => {
})
onMounted(() => {
})
const refData = toRefs(data);
return {
...refData,
}
}
};
</script>
<style scoped>
</style>
home
这个文件是调取组件的文件
<back-top></back-top>
<script lang='ts'>
components:{
BackTop : defineAsyncComponent(() =>import('../components/conten.vue')),
},
</script>
一键回到顶部方法
BackTop.vue
- 在component创建文件 取名为BackTop.vue
<template>
<transition :name="transitionName">
<div v-show="visible" :style="customStyle" class="back-to-ceiling" @click="backToTop">
<svg width="16" height="16" viewBox="0 0 17 17" xmlns="http://www.w3.org/2000/svg" class="Icon Icon--backToTopArrow" aria-hidden="true" style="height:16px;width:16px"><path d="M12.036 15.59a1 1 0 0 1-.997.995H5.032a.996.996 0 0 1-.997-.996V8.584H1.03c-1.1 0-1.36-.633-.578-1.416L7.33.29a1.003 1.003 0 0 1 1.412 0l6.878 6.88c.782.78.523 1.415-.58 1.415h-3.004v7.004z" /></svg>
</div>
</transition>
</template>
<script>
export default {
name: 'BackTop',
props: {
visibilityHeight: {
type: Number,
default: 400
},
backPosition: {
type: Number,
default: 0
},
customStyle: {
type: Object,
default: function() {
return {
right: '50px',
bottom: '50px',
width: '40px',
height: '40px',
'border-radius': '4px',
'line-height': '45px',
background: '#e7eaf1'
}
}
},
transitionName: {
type: String,
default: 'fade'
}
},
data() {
return {
visible: false,
interval: null,
isMoving: false
}
},
mounted() {
window.addEventListener('scroll', this.handleScroll)
},
beforeDestroy() {
window.removeEventListener('scroll', this.handleScroll)
if (this.interval) {
clearInterval(this.interval)
}
},
methods: {
handleScroll() {
this.visible = window.pageYOffset > this.visibilityHeight
},
backToTop() {
if (this.isMoving) return
const start = window.pageYOffset
let i = 0
this.isMoving = true
this.interval = setInterval(() => {
const next = Math.floor(this.easeInOutQuad(10 * i, start, -start, 500))
if (next <= this.backPosition) {
window.scrollTo(0, this.backPosition)
clearInterval(this.interval)
this.isMoving = false
} else {
window.scrollTo(0, next)
}
i++
}, 16.7)
},
easeInOutQuad(t, b, c, d) {
if ((t /= d / 2) < 1) return c / 2 * t * t + b
return -c / 2 * (--t * (t - 2) - 1) + b
}
}
}
</script>
<style scoped>
.back-to-ceiling {
position: fixed;
display: inline-block;
text-align: center;
cursor: pointer;
}
.back-to-ceiling:hover {
background: #d5dbe7;
}
.fade-enter-active,
.fade-leave-active {
transition: opacity .5s;
}
.fade-enter,
.fade-leave-to {
opacity: 0
}
.back-to-ceiling .Icon {
fill: #9aaabf;
background: none;
}
</style>
index.vue
<template>
<div class="home">
<ul>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<BackTop></BackTop>
</ul>
</div>
</template>
<script lang='ts'>
import { reactive,toRefs,onBeforeMount,onMounted,defineAsyncComponent} from 'vue'
import { useRouter,useRoute} from 'vue-router'
export default {
name: '',
components:{
BackTop : defineAsyncComponent(() =>import('../../components/goto.vue')),
},
setup() {
let router = useRouter(),route = useRoute();
const data= reactive({
})
onBeforeMount(() => {
})
onMounted(() => {
})
const refData = toRefs(data);
return {
...refData,
}
}
};
</script>
<style scoped>
.home {
height: 100vh;
width: 100%;
}
ul {
display: block;
height: 3000px;
background: yellow;
}
</style>
一键回顶部方法2
BackTop.vue
!<template>
<div class="goto">
<div v-if="btnFlag" class="goto" @click="backTop">
<img src="https://g.csdnimg.cn/side-toolbar/3.0/images/fanhuidingbucopy.png" alt />
</div>
</div>
</template>
<script>
export default {
data() {
return {
btnFlag: false
};
},
methods: {
backTop() {
const that = this;
let timer = setInterval(() => {
let ispeed = Math.floor(-that.scrollTop / 5);
document.documentElement.scrollTop = document.body.scrollTop =
that.scrollTop + ispeed;
if (that.scrollTop === 0) {
clearInterval(timer);
}
}, 16);
},
scrollToTop() {
const that = this;
let scrollTop =
window.pageYOffset ||
document.documentElement.scrollTop ||
document.body.scrollTop;
that.scrollTop = scrollTop;
if (that.scrollTop > 100) {
that.btnFlag = true;
} else {
that.btnFlag = false;
}
}
},
mounted() {
window.addEventListener("scroll", this.scrollToTop);
},
destroyed() {
window.removeEventListener("scroll", this.scrollToTop);
}
};
</script>
<style lang="scss" scoped>
.main {
width: 100%;
height: 100vh;
position: relative;
.goto {
position: fixed;
right: 0;
top: 80%;
width: 60px;
border-radius: 10%;
text-align: center;
background: gray;
}
}
</style>
index.vue
<template>
<div class="home">
<ul>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<li>我是夏利</li>
<BackTop></BackTop>
</ul>
</div>
</template>
<script lang='ts'>
import { reactive,toRefs,onBeforeMount,onMounted,defineAsyncComponent} from 'vue'
import { useRouter,useRoute} from 'vue-router'
export default {
name: '',
components:{
BackTop : defineAsyncComponent(() =>import('../../components/goto.vue')),
},
setup() {
let router = useRouter(),route = useRoute();
const data= reactive({
})
onBeforeMount(() => {
})
onMounted(() => {
})
const refData = toRefs(data);
return {
...refData,
}
}
};
</script>
<style scoped>
.home {
height: 100vh;
width: 100%;
}
ul {
display: block;
height: 3000px;
background: yellow;
}
</style>
