zoukankan      html  css  js  c++  java
  • vue2.0 移动端,下拉刷新,上拉加载更多插件 转:

    转自:http://www.cnblogs.com/gmajip/p/7204072.html

    <template lang="html">
      <div class="yo-scroll"
      :class="{'down':(state===0),'up':(state==1),refresh:(state===2),touch:touching}"
      @touchstart="touchStart($event)"
      @touchmove="touchMove($event)"
      @touchend="touchEnd($event)"
      @scroll="(onInfinite || infiniteLoading) ? onScroll($event) : undefined">
        <section class="inner" :style="{ transform: 'translate3d(0, ' + top + 'px, 0)' }">
          <header class="pull-refresh">
            <slot name="pull-refresh">
               <span class="down-tip">下拉更新</span>
               <span class="up-tip">松开更新</span>
               <span class="refresh-tip">更新中……</span>
            </slot>
          </header>
          <slot></slot>
          <footer class="load-more">
            <slot name="load-more">
              <span>{{loadingText}}</span>
            </slot>
          </footer>
        </section>
      </div>
    </template>
     
    <script>
    export default {
      props: {
        offset: {
          type: Number,
          default: 40
        },
        loadingText: {
          type: String,
          default: '加载中...'
        },
        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
          this.infiniteLoading = false
        },
     
        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()
        }
      }
    }
    </script>
    <style>
    .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;
       100%;
      transition-duration: 300ms;
    }
    .yo-scroll .pull-refresh {
      position: relative;
      left: 0;
      top: 0;
       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;
    }
    </style>
    

      把上面组件拷贝一下,保存vue文件pull-refresh.vue放到你的component/common文件夹下,  然后引入到页面 , 下面是引用demo

    <template>
      <div class="home">
     
        <v-scroll :on-refresh="onRefresh" :on-infinite="onInfinite"  :loading-text="loadingText" >
          <ul class="list">
            <li v-for="item in articleList">{{item.title}}</li>
          </ul>
        </v-scroll>
      </div>
    </template>
     
    <script>
      import { AjaxPlugin, XButton,Group, Cell, XInput} from 'vux'
      import Scroll from '../../common/pull-refresh';
     
      export default {
        name: 'home',
        components: {
          'v-scroll': Scroll,
          Group,
          XButton,
          Cell,
          XInput,
          AjaxPlugin
        },
        data () {
          return {
            articleList:this.getArticleList(1),
            loadingText:'加载中...',
            counter : 1, //当前页面
            num : 20,  // 一次显示多少条
            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.getArticleList();
        },
        methods: {
     
     
     
     
          getArticleList: function (catId) {
            let _this = this
            getDate('/index.php',{params:{m:'jsonp',c:'index',a:'lists',catid:59}},function(data){
              let arr = data.result.data;
              _this.articleList=arr;
              if(arr.length>=_this.num){
                _this.counter++;
              }
            })
            return []
          },
          onRefresh(done) {
            let vm = this;
            vm.loadingText='加载中……';
            getDate('/index.php',{params:{m:'jsonp',c:'index',a:'lists',catid:59}},function(data){
              let arr = data.result.data;
              vm.articleList=arr;
              if(arr.length>=vm.num){
                vm.counter=2;
              }
              done() // call done
            })
          },
          onInfinite(done) {
            let vm = this;
            getDate('/index.php',{params:{m:'jsonp',c:'index',a:'lists',catid:59,page:vm.counter}},function(data){
              let arr = data.result.data;
              vm.articleList=vm.articleList.concat(arr);
              if(arr.length<vm.num){
                vm.loadingText='加载完毕……';
                //vm.$el.querySelector('.load-more').style.display = 'none';
                return;
              }else{
                vm.counter++;
              }
              done() // call done
            })
          }
        }
      }
     
     
      function getDate(url,params,fn) {
        AjaxPlugin.$http.get(url, params)
          .then((response) => {
            if (fn) fn(response.data)
          })
     
     
      }
     
      function htttpRequest (url, params, cb) {
        let dataStr = ''
        for (let key in params) {
          dataStr += key + '=' + params[key]
        }
     
        dataStr = dataStr.substr(0, dataStr.length - 1)
        console.log(dataStr);
        AjaxPlugin.$http.post(url, params)
          .then((response) => {
            if (cb) cb(response.data)
          })
      }
     
     
     
    </script>
     
     
     
    <!-- Add "scoped" attribute to limit CSS to this component only -->
    <style scoped>
      h1, h2 {
        font-weight: normal;
      }
     
      ul {
        list-style-type: none;
        padding: 0;
      }
     
      li {
        flex: 1;
        margin: 10px ;
        border-bottom:#ddd solid 1px;
      }
     
      a {
        color: #42b983;
      }
    </style>
    

      

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  • 原文地址:https://www.cnblogs.com/qq364735538/p/7299786.html
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