Vue实现下拉加载更多

转自于:https://www.jb51.net/article/211727.htm(亲测可用)

这里需要后端做分页

1. 使用el-table-infinite-scroll 插件

(1). 安装插件

1 npm install --save el-table-infinite-scroll

(2). 全局引入并注册

1 2 3 4 5 // main.js    import elTableInfiniteScroll from 'el-table-infinite-scroll';    Vue.use(elTableInfiniteScroll);

(3). 局部文件引入

1 2 3 4 5 6 7 8 9 10 <script> // 引入 import elTableInfiniteScroll from 'el-table-infinite-scroll'; export default {   // 注册指令   directives: {     'el-table-infinite-scroll': elTableInfiniteScroll   } } </script>

(4). 使用指令

1 2 3 <el-table :height="tableHeight" v-el-table-infinite-scroll="loadMore">    </el-table>

(5). 代码实例

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 <template>     <div class="app-container">         <el-table :height="tableHeight" v-el-table-infinite-scroll="loadMore" :data="tableList">             <!-- 表格数据省略 -->         </el-table>     </div> </template>    <script> // 引入插件 import elTableInfiniteScroll from "el-table-infinite-scroll";    export default {     name: "index",     data() {         return {             // 表格高度             tableHeight:"",             // 数据总数             tableCount:0,             // 表格数据列表             tableList:[],             // 是否加载中             tableLoading:false,             // 表格搜索条件             tableSearch:{                 page:1             }         }     },     // 注册指令     directives: {         "el-table-infinite-scroll": elTableInfiniteScroll,     },        created() {         let windowHeight =document.documentElement.clientHeight || document.body.clientHeight;         // 动态计算表格的高度,200为屏幕内除了表格以外其他元素的高度,依实际情况而定         this.tableHeight = windowHeight - 200 + "px";     },     mounted(){         this.getTableData(this.tableSearch);     },        methods: {         // 请求表格数据         getTableData(search) {             let page = search.page;             let url = "index?page=" + page;             // 首次打开页面要加载一次数据,为了防止数据过多自动触发滚动,此处需要置为加载中             this.tableLoading = true;             this.$http.get(url).then((result) => {                 if (res.code == 10000) {                     // 拼接数据                     this.tableList = this.tableList.concat(result.data.list);                     this.tableCount = result.count;                     this.tableSearch.page = result.current;                     this.tableLoading = false;                 }             });         },         // 加载更多         loadMore() {             if (!this.tableLoading) {                 this.tableLoading = true;                 if (this.tableList.length < this.tableCount) {                     this.tableSearch.page++;                     this.getTableData(this.tableSearch);                 } else {                     this.$message("已加载完所有的数据!");                     this.tableLoading = false;                 }             }         },     } }; </script>

2. 自定义下拉加载方法

上面使用的插件需要依赖Element-UI,如果没有使用Element-UI,那就只能自己写一个下拉加载了,实现代码如下:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 <template>     <div class="app-container">         <div :style="{height:tableHeight,overflow:'auto'}" id="tableBox">             <!-- 表格数据省略 -->         </div>     </div> </template>    <script> export default {     name: "index",     data() {         return {             // 表格高度             tableHeight:"",             // 数据总数             tableCount:0,             // 表格数据列表             tableList:[],             // 是否加载中             tableLoading:false,             // 表格搜索条件             tableSearch:{                 page:1             }         };     },     created(){         let windowHeight = document.documentElement.clientHeight || document.body.clientHeight;         // 动态计算表格的高度,200为屏幕内除了表格以外其他元素的高度,依实际情况而定         this.tableHeight = windowHeight - 200 +'px';     },     mounted() {         this.getTableData(this.tableSearch);         document.getElementById("tableBox").addEventListener('scroll',this.onTableScroll);     },        beforeDestroy() {         // 移除监听事件         window.removeEventListener('scroll', this.onTableScroll)     },        methods: {         onTableScroll(){             var obj = document.getElementById("tableBox");             var scrollHeight = obj.scrollHeight;             var scrollTop = obj.scrollTop;             var objHeight = obj.offsetHeight;              // 100为阈值,可根据实际情况调整                if(scrollHeight <= (scrollTop + objHeight + 100) && !this.tableLoading && this.tableList.length<this.tableCount){                 this.tableLoading = true;                 this.tableSearch.page++;                 setTimeout(()=>{                       this.getTableData(this.tableSearch);                 },300)             }         },            getTableData(search){             let page = search.page;             let url = "index?page=" + page;             // 首次打开页面要加载一次数据,为了防止数据过多自动触发滚动,此处需要置为加载中             this.tableLoading = true;             this.$http.get(url).then((result) => {                 if (res.code == 10000) {                     // 拼接数据                     this.tableList = this.tableList.concat(result.data.list);                     this.tableCount = result.count;                     this.tableSearch.page = result.current;                     this.tableLoading = false;                 }             });         },                      }, }; </script>
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