不多說(shuō)，直接代碼，以便以后重復(fù)利用：
<script type="text/ecmascript-6"> import BScroll from 'better-scroll'; const ERR_OK = 0; export default { props: { sell: { type: Object } }, data() { return { goods: [], listHeight: [], scrollY: 0 }; }, computed: { currentIndex() { for (let i = 0; i < this.listHeight.length; i++) { let height1 = this.listHeight[i]; let height2 = this.listHeight[i + 1]; if (!height2 || (this.scrollY >= height1 && this.scrollY < height2)) { return i; }; } return 0; } }, created() { this.classMap = ['decrease', 'discount', 'special', 'invoice', 'guarantee']; this.$http.get('/api/goods').then((response) => { response = response.body; if (response.errno === ERR_OK) { this.goods = response.data; this.$nextTick(() => { this._initScroll(); this._calculateHeight(); }); } }); }, methods: { _initScroll() { this.menuScroll = new BScroll(this.$refs.menuwrapper, { click: true }); this.foodScroll = new BScroll(this.$refs.foodswrapper, { probeType: 3 }); this.foodScroll.on('scroll', (pos) => { this.scrollY = Math.abs(Math.round(pos.y)); }); }, _calculateHeight() { let foodList = this.$refs.foodswrapper.getElementsByClassName('food-list-hook'); let height = 0; this.listHeight.push(height); for (let i = 0; i < foodList.length; i++) { let item = foodList[i]; height += item.clientHeight; this.listHeight.push(height); } }, selectMenu(index, event) { if (!event._constructed) { return; }; console.log(index); let foodList = this.$refs.foodswrapper.getElementsByClassName('food-list-hook'); let el = foodList[index]; this.foodScroll.scrollToElement(el, 300); } } }; </script>