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Nuxt/Vue丝滑卡片式滑动|Vue仿探探卡片效果(vue使用vant下拉框van-dropdown-item 绑定title值不变问题)

Nuxt/Vue丝滑卡片式滑动|Vue仿探探卡片效果

最近在开发Nuxt项目,有个需求是实现类似探探左右滑动切换卡片功能。经过反复调试,最终实现了这个效果。

页面整体布局分为 顶部导航条、卡片滑动区、底部Tabbar 三个模块。

为了规范页面代码,其中卡片滑动区域单独抽离了一个组件flipcard.vue。

下面就讲解下卡片滑动页面实现方法。

  • 整体模板

<!-- //翻一翻模板 -->
<template>
<div>
<!-- >>顶部 -->
<header-bar :back="false" bgcolor="linear-gradient(to right, #00e0a1, #00a1ff)" fixed>
<div slot="title"><i class="iconfont icon-like c-red"></i> <em class="ff-gg">遇见TA</em></div>
<div slot="right" class="ml-30" @click="showFilter = true"><i class="iconfont icon-filter"></i></div>
</header-bar>

<!-- >>主页面 -->
<div class="nuxt__scrollview scrolling flex1" ref="scrollview" style="background: linear-gradient(to right, #00e0a1, #00a1ff);">
<div class="nt__flipcard">
<div class="nt__stack-wrapper">
<flipcard ref="stack" :pages="stackList" @click="handleStackClicked"></flipcard>
</div>
<div class="nt__stack-control flexbox">
<button class="btn-ctrl prev" @click="handleStackPrev"><i class="iconfont icon-unlike "></i></button>
<button class="btn-ctrl next" @click="handleStackNext"><i class="iconfont icon-like "></i></button>
</div>
</div>
</div>

<!-- >>底部tabbar -->
<tab-bar bgcolor="linear-gradient(to right, #00e0a1, #00a1ff)" color="#fff" />
</div>
</template>

项目中顶部导航栏/底部Tabbar组件,这里不作过多介绍,之前有一篇分享文章,感兴趣的可以看下。

基于Nuxt/Vue自定义Topbar+Tabbar

  • 侧边栏弹出框

侧边弹出层使用的是VPopup组件实现。其中范围滑块、switch、star等组件使用的是Vant组件库。

<!-- //侧边栏弹窗模板 -->
<v-popup v-model="showFilter" position="left" xclose xposition="left" title="高级筛选与设置">
<div class="flipcard-filter">
<div class="item nuxt-cell">
<label class="lbl">范围</label>
<div class="flex1">
<van-slider v-model="distanceRange" bar-height="2px" button-size="12px" active-color="#00e0a1" />
</div>
<em class="val">{{distanceVal}}</em>
</div>
<div class="item nuxt-cell">
<label class="lbl flex1">自动增加范围</label>
<em class="val"><van-switch v-model="autoExpand" size="20px" active-color="#00e0a1" /></em>
</div>
<div class="item nuxt-cell">
<label class="lbl flex1">性别</label>
<em class="val">女生</em>
</div>
<div class="item nuxt-cell">
<label class="lbl">好评度</label>
<div class="flex1"><van-rate v-model="starVal" color="#00e0a1" icon="like" void-icon="like-o" @change="handleStar" /></div>
<em class="val">{{starVal}}星</em>
</div>
<div class="item nuxt-cell">
<label class="lbl flex1">优先在线用户</label>
<em class="val"><van-switch v-model="firstOnline" size="20px" active-color="#00e0a1" /></em>
</div>
<div class="item nuxt-cell">
<label class="lbl flex1">优先新用户</label>
<em class="val"><van-switch v-model="firstNewUser" size="20px" active-color="#00e0a1" /></em>
</div>
<div class="item nuxt-cell mt-20">
<div class="mt-30 nuxt__btn nuxt__btn-primary--gradient" style="height:38px;"><i class="iconfont icon-filter"></i> 更新</div>
</div>
</div>
</v-popup>

  • 仿探探卡片滑块

滑动卡片封装成了一个flipcard.vue组件。只需传入pages数据即可。支持左右拖拽滑动、滑动回弹动画、点击按钮切换等功能。

<flipcard ref="stack" :pages="stackList" @click="handleStackClicked"></flipcard>

pages支持传入的JSON数据格式。

{
avatar: 'assets/img/avatar.jpg',
name: '甜甜圈',
sex: 'female',
age: 21,
starsign: '双鱼座',
distance: '800米',
// 照片集
photos: [...],
// 签名
sign: 'life is like a play 人生如戏。'
},

新建flipcard.vue页面

<!-- //卡片滑动模板 -->
<template>
<ul class="stack">
<li class="stack-item" v-for="(item, index) in pages" :key="index" :style="[transformIndex(index),transform(index)]"
@touchmove.stop.capture="touchmove"
@touchstart.stop.capture="touchstart"
@touchend.stop.capture="touchend($event, index)"
@touchcancel.stop.capture="touchend($event, index)"
@mousedown.stop.capture.prevent="touchstart"
@mouseup.stop.capture.prevent="touchend($event, index)"
@mousemove.stop.capture.prevent="touchmove"
@mouseout.stop.capture.prevent="touchend($event, index)"
@webkit-transition-end="onTransitionEnd(index)"
@transitionend="onTransitionEnd(index)"
>
<img :src="item.avatar" />
<div class="stack-info">
<h2 class="name">{{item.name}}</h2>
<p class="tags">
<span class="sex" :class="item.sex"><i class="iconfont" :class="'icon-'+item.sex"></i> {{item.age}}</span>
<span class="xz">{{item.starsign}}</span>
</p>
<p class="distance">{{item.distance}}</p>
</div>
</li>
</ul>
</template>

<script>
export default {
props: {
pages: {
type: Array,
default: {}
}
},
data () {
return {
basicdata: {
start: {},
end: {}
},
temporaryData: {
isStackClick: true,
offsetY: '',
poswidth: 0,
posheight: 0,
lastPosWidth: '',
lastPosHeight: '',
lastZindex: '',
rotate: 0,
lastRotate: 0,
visible: 3,
tracking: false,
animation: false,
currentPage: 0,
opacity: 1,
lastOpacity: 0,
swipe: false,
zIndex: 10
}
}
},
computed: {
// 划出面积比例
offsetRatio () {
let width = this.$el.offsetWidth
let height = this.$el.offsetHeight
let offsetWidth = width - Math.abs(this.temporaryData.poswidth)
let offsetHeight = height - Math.abs(this.temporaryData.posheight)
let ratio = 1 - (offsetWidth * offsetHeight) / (width * height) || 0
return ratio > 1 ? 1 : ratio
},
// 划出宽度比例
offsetWidthRatio () {
let width = this.$el.offsetWidth
let offsetWidth = width - Math.abs(this.temporaryData.poswidth)
let ratio = 1 - offsetWidth / width || 0
return ratio
}
},
mounted () {
// 绑定事件
this.$on('next', () => {
this.next()
})
this.$on('prev', () => {
this.prev()
})
},
methods: {
touchstart (e) {
if (this.temporaryData.tracking) {
return
}
// 是否为touch
if (e.type === 'touchstart') {
if (e.touches.length > 1) {
this.temporaryData.tracking = false
return
} else {
// 记录起始位置
this.basicdata.start.t = new Date().getTime()
this.basicdata.start.x = e.targetTouches[0].clientX
this.basicdata.start.y = e.targetTouches[0].clientY
this.basicdata.end.x = e.targetTouches[0].clientX
this.basicdata.end.y = e.targetTouches[0].clientY
// offsetY在touch事件中没有,只能自己计算
this.temporaryData.offsetY = e.targetTouches[0].pageY - this.$el.offsetParent.offsetTop
}
// pc操作
} else {
this.basicdata.start.t = new Date().getTime()
this.basicdata.start.x = e.clientX
this.basicdata.start.y = e.clientY
this.basicdata.end.x = e.clientX
this.basicdata.end.y = e.clientY
this.temporaryData.offsetY = e.offsetY
}
this.temporaryData.isStackClick = true
this.temporaryData.tracking = true
this.temporaryData.animation = false
},
touchmove (e) {
this.temporaryData.isStackClick = false
// 记录滑动位置
if (this.temporaryData.tracking && !this.temporaryData.animation) {
if (e.type === 'touchmove') {
e.preventDefault()
this.basicdata.end.x = e.targetTouches[0].clientX
this.basicdata.end.y = e.targetTouches[0].clientY
} else {
e.preventDefault()
this.basicdata.end.x = e.clientX
this.basicdata.end.y = e.clientY
}
// 计算滑动值
this.temporaryData.poswidth = this.basicdata.end.x - this.basicdata.start.x
this.temporaryData.posheight = this.basicdata.end.y - this.basicdata.start.y
let rotateDirection = this.rotateDirection()
let angleRatio = this.angleRatio()
this.temporaryData.rotate = rotateDirection * this.offsetWidthRatio * 15 * angleRatio
}
},
touchend (e, index) {
if(this.temporaryData.isStackClick) {
this.$emit('click', index)
this.temporaryData.isStackClick = false
}
this.temporaryData.isStackClick = true
this.temporaryData.tracking = false
this.temporaryData.animation = true
// 滑动结束,触发判断
// 判断划出面积是否大于0.4
if (this.offsetRatio >= 0.4) {
// 计算划出后最终位置
let ratio = Math.abs(this.temporaryData.posheight / this.temporaryData.poswidth)
this.temporaryData.poswidth = this.temporaryData.poswidth >= 0 ? this.temporaryData.poswidth + 200 : this.temporaryData.poswidth - 200
this.temporaryData.posheight = this.temporaryData.posheight >= 0 ? Math.abs(this.temporaryData.poswidth * ratio) : -Math.abs(this.temporaryData.poswidth * ratio)
this.temporaryData.opacity = 0
this.temporaryData.swipe = true
this.nextTick()
// 不满足条件则滑入
} else {
this.temporaryData.poswidth = 0
this.temporaryData.posheight = 0
this.temporaryData.swipe = false
this.temporaryData.rotate = 0
}
},
nextTick () {
// 记录最终滑动距离
this.temporaryData.lastPosWidth = this.temporaryData.poswidth
this.temporaryData.lastPosHeight = this.temporaryData.posheight
this.temporaryData.lastRotate = this.temporaryData.rotate
this.temporaryData.lastZindex = 20
// 循环currentPage
this.temporaryData.currentPage = this.temporaryData.currentPage === this.pages.length - 1 ? 0 : this.temporaryData.currentPage + 1
// currentPage切换,整体dom进行变化,把第一层滑动置最低
this.$nextTick(() => {
this.temporaryData.poswidth = 0
this.temporaryData.posheight = 0
this.temporaryData.opacity = 1
this.temporaryData.rotate = 0
})
},
onTransitionEnd (index) {
let lastPage = this.temporaryData.currentPage === 0 ? this.pages.length - 1 : this.temporaryData.currentPage - 1
// dom发生变化正在执行的动画滑动序列已经变为上一层
if (this.temporaryData.swipe && index === lastPage) {
this.temporaryData.animation = true
this.temporaryData.lastPosWidth = 0
this.temporaryData.lastPosHeight = 0
this.temporaryData.lastOpacity = 0
this.temporaryData.lastRotate = 0
this.temporaryData.swipe = false
this.temporaryData.lastZindex = -1
}
},
prev () {
this.temporaryData.tracking = false
this.temporaryData.animation = true
// 计算划出后最终位置
let width = this.$el.offsetWidth
this.temporaryData.poswidth = -width
this.temporaryData.posheight = 0
this.temporaryData.opacity = 0
this.temporaryData.rotate = '-3'
this.temporaryData.swipe = true
this.nextTick()
},
next () {
this.temporaryData.tracking = false
this.temporaryData.animation = true
// 计算划出后最终位置
let width = this.$el.offsetWidth
this.temporaryData.poswidth = width
this.temporaryData.posheight = 0
this.temporaryData.opacity = 0
this.temporaryData.rotate = '3'
this.temporaryData.swipe = true
this.nextTick()
},
rotateDirection () {
if (this.temporaryData.poswidth <= 0) {
return -1
} else {
return 1
}
},
angleRatio () {
let height = this.$el.offsetHeight
let offsetY = this.temporaryData.offsetY
let ratio = -1 * (2 * offsetY / height - 1)
return ratio || 0
},
inStack (index, currentPage) {
let stack = []
let visible = this.temporaryData.visible
let length = this.pages.length
for (let i = 0; i < visible; i++) {
if (currentPage + i < length) {
stack.push(currentPage + i)
} else {
stack.push(currentPage + i - length)
}
}
return stack.indexOf(index) >= 0
},
// 非首页样式切换
transform (index) {
let currentPage = this.temporaryData.currentPage
let length = this.pages.length
let lastPage = currentPage === 0 ? this.pages.length - 1 : currentPage - 1
let style = {}
let visible = this.temporaryData.visible
if (index === this.temporaryData.currentPage) {
return
}
if (this.inStack(index, currentPage)) {
let perIndex = index - currentPage > 0 ? index - currentPage : index - currentPage + length
style['opacity'] = '1'
style['transform'] = 'translate3D(0,0,' + -1 * 60 * (perIndex - this.offsetRatio) + 'px' + ')'
style['zIndex'] = visible - perIndex
if (!this.temporaryData.tracking) {
style['transitionTimingFunction'] = 'ease'
style['transitionDuration'] = 300 + 'ms'
}
} else if (index === lastPage) {
style['transform'] = 'translate3D(' + this.temporaryData.lastPosWidth + 'px' + ',' + this.temporaryData.lastPosHeight + 'px' + ',0px) ' + 'rotate(' + this.temporaryData.lastRotate + 'deg)'
style['opacity'] = this.temporaryData.lastOpacity
style['zIndex'] = this.temporaryData.lastZindex
style['transitionTimingFunction'] = 'ease'
style['transitionDuration'] = 300 + 'ms'
} else {
style['zIndex'] = '-1'
style['transform'] = 'translate3D(0,0,' + -1 * visible * 60 + 'px' + ')'
}
return style
},
// 首页样式切换
transformIndex (index) {
if (index === this.temporaryData.currentPage) {
let style = {}
style['transform'] = 'translate3D(' + this.temporaryData.poswidth + 'px' + ',' + this.temporaryData.posheight + 'px' + ',0px) ' + 'rotate(' + this.temporaryData.rotate + 'deg)'
style['opacity'] = this.temporaryData.opacity
style['zIndex'] = 10
if (this.temporaryData.animation) {
style['transitionTimingFunction'] = 'ease'
style['transitionDuration'] = (this.temporaryData.animation ? 300 : 0) + 'ms'
}
return style
}
},
}
}
</script>

组件中分别实现了touchmouse事件,支持移动端和PC端滑动。

另外,点击卡片可以跳转到卡片详情页面。

okay,代码中都有一些备注,这里不作详细讲解了。有兴趣的可以去试一试哈~~

今天就分享到这里。希望对大家有所帮助!

vue使用vant下拉框van-dropdown-item 绑定title值不变问题

这篇文章主要介绍了解决vue使用vant下拉框van-dropdown-item 绑定title值不变问题,具有很好的参考价值,希望对大家有所帮助。一起跟随小编过来看看吧

1、创建vue项目

2、使用vant组件

npm install vant --S

全局引用时在main.js引入

import Vant from \'vant\';

import \'vant/lib/index.css\';

Vue.use(Vant);

假如你引入之后发现页面的样式和组件都挂载了,但是console控制台会报错,说xxxx组件没有register,这个时候很有可能是你的vant插件版本有问题,重新下载一个最新的vant就可以了,现在是2.6.0版本

好,接下来继续

在需要使用下拉框的地方使用下拉框组件

<van-dropdown-menu>

<van-dropdown-item

v-model=\"value\"

:options=\"developList\"

/>

</van-dropdown-menu>

data () {

return {

value: \'\'

developList: [

{

value: \'1\',

text: \'我是第一个\'

},

{

value: \'2\',

text: \'我是第二个\'

},

]

}

}

假如是这样的话那么下拉框就会默认显示第一个字眼“wishing第一个”,然后你在点击下拉框选择第二个时也会改变成“我是第二个”

如果你不想有默认选中,并且一开始就显示请选择这样的提示字眼,那么我们可以去看看vant的api文档,发现有一个title的字眼,这个title就是下拉框的显示文字,一开始很多人以为这个下拉框的title只是用来显示然后点击下拉框的item之后会自动绑定过的,但其实是错误的,以下就是一个很好的例子

<van-dropdown-menu>

<van-dropdown-item

title=\"请选择\"

v-model=\"value\"

:disabled=\"disabled\"

:options=\"developList\"

/>

</van-dropdown-menu>

data () {

return {

value: \'\'

developList: [

{

value: \'1\',

text: \'我是第一个\'

},

{

value: \'2\',

text: \'我是第二个\'

},

]

}

}

你会发现请选择的自然从来没变过,无论你选择了第一个还是第二个,那么你就会想title是不是绑定,接下来就有以下操作

<van-dropdown-menu>

<van-dropdown-item

:title=\"title\"

v-model=\"value\"

:disabled=\"disabled\"

:options=\"developList\"

/>

</van-dropdown-menu>

data () {

return {

value: \'\'

title:\'\'请选择,

developList: [

{

value: \'1\',

text: \'我是第一个\'

},

{

value: \'2\',

text: \'我是第二个\'

},

]

}

}

加下来发现还是没有改动啊,那是不是绑定的值没有发生改变了,好像是的,因为你值定义了这个title,这个title就是下拉框选择的显示,只是你没有title的时候vant把你选择的text文字映射到title上去了,一旦你自己使用title进行绑定,那么每次修改时就要修改title,查看vant api可以发现有change事件,接下来就可以操作了

<van-dropdown-menu>

<van-dropdown-item

:title=\"title\"

v-model=\"value\"

:options=\"developList\"

@change=\"changeDevelop\"

/>

</van-dropdown-menu>

data () {

return {

value: \'\'

title:\'\'请选择,

developList: [

{

value: \'1\',

text: \'我是第一个\'

},

{

value: \'2\',

text: \'我是第二个\'

},

]

}

},

methods: {

changeDevelop (i) {

this.title = this.developList[i-1].text

},

}

这就没问题啦!

以上这篇解决vue使用vant下拉框van-dropdown-item 绑定title值不变问题就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持。

vue使用vant下拉框van-dropdown-item 绑定title值不变问题 (https://www.wpmee.com/) javascript教程 第1张

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GG资源网 » Nuxt/Vue丝滑卡片式滑动|Vue仿探探卡片效果(vue使用vant下拉框van-dropdown-item 绑定title值不变问题)

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