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这篇文章主要介绍了vue2.0中goods选购栏滚动算法的实现代码,需要的朋友可以参考下
不多说，直接代码，以便以后重复利用：
<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>
以上所述是小编给大家介绍的vue2.0中goods选购栏滚动算法的实现代码，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对脚本之家网站的支持！ | 
发表于 2017-5-17 10:14:14
