移动端怎样做出上拉下滑刷新加载

这次给大家带来移动端怎样做出上拉下滑刷新加载，移动端做出上拉下滑刷新加载的注意事项有哪些，下面就是实战案例，一起来看一下。

直接上代码，不懂的多看几遍，下面我换会告诉大家如何使用。

 
  
   
          下拉更新      松开更新      更新中       
        
 
export default { props: {  offset: {   type: Number,   default: 40  },  enableInfinite: {   type: Boolean,   default: true  },  enableRefresh: {   type: Boolean,   default: true  },  onRefresh: {   type: Function,   default: undefined,   required: false  },  onInfinite: {   type: Function,   default: undefined,   require: false  } }, data() {  return {   top: 0,   state: 0,   startY: 0,   touching: false,   infiniteLoading: false  } }, methods: {  touchStart(e) {   this.startY = e.targetTouches[0].pageY   this.startScroll = this.$el.scrollTop || 0   this.touching = true  },  touchMove(e) {   if (!this.enableRefresh || this.$el.scrollTop > 0 || !this.touching) {    return   }   let diff = e.targetTouches[0].pageY - this.startY - this.startScroll   if (diff > 0) e.preventDefault()   this.top = Math.pow(diff, 0.8) + (this.state === 2 ? this.offset : 0)   if (this.state === 2) { // in refreshing    return   }   if (this.top >= this.offset) {    this.state = 1   } else {    this.state = 0   }  },  touchEnd(e) {   if (!this.enableRefresh) return   this.touching = false   if (this.state === 2) { // in refreshing    this.state = 2    this.top = this.offset    return   }   if (this.top >= this.offset) { // do refresh    this.refresh()   } else { // cancel refresh    this.state = 0    this.top = 0   }  },  refresh() {   this.state = 2   this.top = this.offset   this.onRefresh(this.refreshDone)  },  refreshDone() {   this.state = 0   this.top = 0  },  infinite() {   this.infiniteLoading = true   this.onInfinite(this.infiniteDone)  },  infiniteDone() {   this.infiniteLoading = false  },  onScroll(e) {   if (!this.enableInfinite || this.infiniteLoading) {    return   }   let outerHeight = this.$el.clientHeight   let innerHeight = this.$el.querySelector('.inner').clientHeight   let scrollTop = this.$el.scrollTop   let ptrHeight = this.onRefresh ? this.$el.querySelector('.pull-refresh').clientHeight : 0   let infiniteHeight = this.$el.querySelector('.load-more').clientHeight   let bottom = innerHeight - outerHeight - scrollTop - ptrHeight   if (bottom < infiniteHeight) this.infinite()  } }}.yo-scroll { position: absolute; top: 2.5rem; right: 0; bottom: 0; left: 0; overflow: auto; -webkit-overflow-scrolling: touch; background-color: #ddd}.yo-scroll .inner { position: absolute; top: -2rem; width: 100%; transition-duration: 300ms;}.yo-scroll .pull-refresh { position: relative; left: 0; top: 0; width: 100%; height: 2rem; display: flex; align-items: center; justify-content: center;}.yo-scroll.touch .inner { transition-duration: 0ms;}.yo-scroll.down .down-tip { display: block;}.yo-scroll.up .up-tip { display: block;}.yo-scroll.refresh .refresh-tip { display: block;}.yo-scroll .down-tip,.yo-scroll .refresh-tip,.yo-scroll .up-tip { display: none;}.yo-scroll .load-more { height: 3rem; display: flex; align-items: center; justify-content: center;} 

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把上面组件拷贝一下，存成后缀是.vue的组件放到你的component下，  然后引入到页面 , 下面是我引用的demo

上代码： 里面有注释哦，有问题给我留言！

 
        
     
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import Scroll from './y-scroll/scroll';export default{ data () {  return {   counter : 1, //默认已经显示出15条数据 count等于一是让从16条开始加载   num : 15, // 一次显示多少条   pageStart : 0, // 开始页数   pageEnd : 0, // 结束页数   listdata: [], // 下拉更新数据存放数组   downdata: [] // 上拉更多的数据存放数组  } }, mounted : function(){   this.getList(); }, methods: {  getList(){    let vm = this;     vm.$http.get('https://api.github.com/repos/typecho-fans/plugins/contents/').then((response) => {          vm.listdata = response.data.slice(0,15);         }, (response) => {          console.log('error');        });  },  onRefresh(done) {       this.getList();           done() // call done     },  onInfinite(done) {       let vm = this;       vm.$http.get('https://api.github.com/repos/typecho-fans/plugins/contents/').then((response) => {         vm.counter++;         vm.pageEnd = vm.num * vm.counter;         vm.pageStart = vm.pageEnd - vm.num;         let arr = response.data;           let i = vm.pageStart;           let end = vm.pageEnd;           for(; i= response.data.length){             this.$el.querySelector('.load-more').style.display = 'none';             return;            }            }         done() // call done          }, (response) => {          console.log('error');        });      } }, components : {'v-scroll': Scroll }}

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相信看了本文案例你已经掌握了方法，更多精彩请关注【创想鸟】其它相关文章！

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