第一步:npm下载
npm install better-scroll --save
第二步:局部注册(当前组件)
import BScroll from 'better-scroll'
第三步:使用
<template>
<div>
<div class="goods">
<div class="left">
<ul>
<li
class="menu-item"
v-for="(good, index) in goods"
:key="index"
:class="{ current: index === currentIndex }"
@click="clickMenuItem(index)"
>
<span class="text">
<img class="icon" :src="good.icon" v-if="good.icon" />
{{ good.name }}
</span>
</li>
</ul>
</div>
<div class="right">
<ul ref="foodsUl">
<li class="food-list-hook">
<h1 class="title">{{ goods[0].name }}</h1>
<ul>
<div class="food-item">AAAAAAAAAAAAAAAAA</div>
</ul>
</li>
<li class="food-list-hook">
<h1 class="title">{{ goods[1].name }}</h1>
<ul>
<div class="food-item">BBBBBBBBBBBBBBBBB</div>
</ul>
</li>
<li class="food-list-hook">
<h1 class="title">{{ goods[2].name }}</h1>
<ul>
<div class="food-item">CCCCCCCCCCCCCC</div>
</ul>
</li>
<li class="food-list-hook">
<h1 class="title">{{ goods[3].name }}</h1>
<ul>
<div class="food-item">DDDDDDDDDDDDDDD</div>
</ul>
</li>
<li class="food-list-hook">
<h1 class="title">{{ goods[4].name }}</h1>
<ul>
<div class="food-item">EEEEEEEEEEEEEE</div>
</ul>
</li>
</ul>
</div>
</div>
</div>
</template>
<script>
import BScroll from 'better-scroll'
export default {
data() {
return {
scrollY: 0,
tops: [],
goods: [{ name: 'A' }, { name: 'B' }, { name: 'C' }, { name: 'D' }, { name: 'E' }],
}
},
mounted() {
this.$nextTick(() => {
this._initScroll()
this._initTops()
})
},
computed: {
currentIndex() {
const { scrollY, tops } = this
const index = tops.findIndex((top, index) => {
return scrollY >= top && scrollY < tops[index + 1]
})
console.log('根据条件计算产生一个结果', index)
return index
},
},
methods: {
_initScroll() {
new BScroll('.left', {
click: true,
})
this.foodsScroll = new BScroll('.right', {
probeType: 2,
click: true,
})
this.foodsScroll.on('scroll', ({ x, y }) => {
console.log('scroll', x, y)
this.scrollY = Math.abs(y)
})
this.foodsScroll.on('scrollEnd', ({ x, y }) => {
console.log('scrollEnd', x, y)
this.scrollY = Math.abs(y)
})
},
_initTops() {
const tops = []
let top = 0
tops.push(top)
const lis = this.$refs.foodsUl.getElementsByClassName('food-list-hook')
Array.prototype.slice.call(lis).forEach(li => {
top += li.clientHeight
tops.push(top)
})
this.tops = tops
console.log(tops)
},
clickMenuItem(index) {
console.log(index)
const scrollY = this.tops[index]
this.scrollY = scrollY
this.foodsScroll.scrollTo(0, -scrollY, 300)
},
},
}
</script>
<style lang="scss">
.goods {
display: flex;
position: absolute;
top: 15px;
bottom: 46px;
width: 100%;
background: #fff;
overflow: hidden;
.left {
flex: 0 0 80px;
width: 200px;
background: #f3f5f7;
.menu-item {
display: table;
height: 54px;
width: 200px;
padding: 0 12px;
line-height: 14px;
&.current {
position: relative;
z-index: 10;
margin-top: -1px;
background: #fff;
font-weight: 700;
}
.icon {
display: inline-block;
vertical-align: top;
width: 12px;
height: 12px;
margin-right: 2px;
background-size: 12px 12px;
background-repeat: no-repeat;
}
.text {
display: table-cell;
width: 56px;
vertical-align: middle;
font-size: 16px;
}
}
}
.right {
flex: 1;
.title {
padding-left: 14px;
height: 26px;
line-height: 26px;
border-left: 2px solid #d9dde1;
font-size: 16px;
color: rgb(147, 153, 159);
background: #f3f5f7;
text-align: left;
margin: 0;
}
.food-item {
height: 500px;
display: flex;
margin: 18px;
padding-bottom: 18px;
&:last-child {
margin-bottom: 0;
}
.icon {
flex: 0 0 57px;
margin-right: 10px;
}
.content {
flex: 1;
text-align: left;
.name {
margin: 2px 0 8px 0;
height: 14px;
line-height: 14px;
font-size: 16px;
color: rgb(7, 17, 27);
}
.desc,
.extra {
line-height: 10px;
font-size: 16px;
color: rgb(147, 153, 159);
}
.desc {
line-height: 12px;
margin-bottom: 8px;
}
.extra {
.count {
margin-right: 12px;
}
}
.price {
font-weight: 700;
line-height: 24px;
.now {
margin-right: 8px;
font-size: 16px;
color: rgb(240, 20, 20);
}
.old {
text-decoration: line-through;
font-size: 16px;
color: rgb(147, 153, 159);
}
}
}
}
}
}
li {
list-style: none;
}
ul {
padding: 0;
margin: 0;
}
</style>
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