(精华)2020年7月17日 vue 实现顶部元素浮动
【摘要】
<template>
<div :style="{height:height+'px',zIndex:zIndex}">
<div
:class="c...
<template>
<div :style="{height:height+'px',zIndex:zIndex}">
<div
:class="className"
:style="{top:(isSticky ? stickyTop +'px' : ''),zIndex:zIndex,position:position,width:width,height:height+'px'}"
>
<slot>
<div>sticky</div>
</slot>
</div>
</div>
</template>
<script>
export default {
name: 'Sticky',
props: {
stickyTop: {
type: Number,
default: 0
},
zIndex: {
type: Number,
default: 1
},
className: {
type: String,
default: ''
}
},
data() {
return {
active: false,
position: '',
width: undefined,
height: undefined,
isSticky: false
}
},
mounted() {
this.height = this.$el.getBoundingClientRect().height
window.addEventListener('scroll', this.handleScroll)
window.addEventListener('resize', this.handleResize)
},
activated() {
this.handleScroll()
},
destroyed() {
window.removeEventListener('scroll', this.handleScroll)
window.removeEventListener('resize', this.handleResize)
},
methods: {
sticky() {
if (this.active) {
return
}
this.position = 'fixed'
this.active = true
this.width = this.width + 'px'
this.isSticky = true
},
handleReset() {
if (!this.active) {
return
}
this.reset()
},
reset() {
this.position = ''
this.width = 'auto'
this.active = false
this.isSticky = false
},
handleScroll() {
const width = this.$el.getBoundingClientRect().width
this.width = width || 'auto'
const offsetTop = this.$el.getBoundingClientRect().top
if (offsetTop < this.stickyTop) {
this.sticky()
return
}
this.handleReset()
},
handleResize() {
if (this.isSticky) {
this.width = this.$el.getBoundingClientRect().width + 'px'
}
}
}
}
</script>
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<template>
<div>
<sticky :z-index="10" class-name="sub-navbar">
<el-dropdown trigger="click">
<el-button plain>
Platform<i class="el-icon-caret-bottom el-icon--right" />
</el-button>
<el-dropdown-menu slot="dropdown" class="no-border">
<el-checkbox-group v-model="platforms" style="padding: 5px 15px;">
<el-checkbox v-for="item in platformsOptions" :key="item.key" :label="item.key">
{{ item.name }}
</el-checkbox>
</el-checkbox-group>
</el-dropdown-menu>
</el-dropdown>
<el-dropdown trigger="click">
<el-button plain>
Link<i class="el-icon-caret-bottom el-icon--right" />
</el-button>
<el-dropdown-menu slot="dropdown" class="no-padding no-border" style="width:300px">
<el-input v-model="url" placeholder="Please enter the content">
<template slot="prepend">
Url
</template>
</el-input>
</el-dropdown-menu>
</el-dropdown>
<div class="time-container">
<el-date-picker v-model="time" type="datetime" format="yyyy-MM-dd HH:mm:ss" placeholder="Release time" />
</div>
<el-button style="margin-left: 10px;" type="success">
publish
</el-button>
</sticky>
<div class="components-container">
<aside>Sticky header, {{ $t('components.stickyTips') }}</aside>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<sticky :sticky-top="200">
<el-button type="primary"> placeholder</el-button>
</sticky>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
<div>placeholder</div>
</div>
</div>
</template>
<script>
import Sticky from '@/components/Sticky'
export default {
name: 'StickyDemo',
components: { Sticky },
data() {
return {
time: '',
url: '',
platforms: ['a-platform'],
platformsOptions: [
{ key: 'a-platform', name: 'platformA' },
{ key: 'b-platform', name: 'platformB' },
{ key: 'c-platform', name: 'platformC' }
],
pickerOptions: {
disabledDate(time) {
return time.getTime() > Date.now()
}
}
}
}
}
</script>
<style scoped>
.components-container div {
margin: 10px;
}
.time-container {
display: inline-block;
}
</style>
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文章来源: codeboy.blog.csdn.net，作者：愚公搬代码，版权归原作者所有，如需转载，请联系作者。
原文链接：codeboy.blog.csdn.net/article/details/107407081
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