el-table 列分页

<template><div><el-table:data="tableData":key="tampTime"style="width: 100%"><el-table-columnprop="name"label="姓名"width="180"></el-table-column><el-table-columnprop="age"label="年龄"width="180"></el-table-column><el-table-columnprop="gender"label="性别"></el-table-column><el-table-columnv-for="(item, index) in showColData":key="index":label="item.colLabel"><template slot="header"><div class="custom-header-cell"><span class="label">{{item.colLabel}}</span><template v-if="colPage.totalPage > 1"><div v-if="!index" :class="['prev-btn', {disabled: colPage.current === 1}]" @click="handlePrev">上一页</div><div v-if="index === showColData.length - 1" :class="['next-btn', {disabled: colPage.current === colPage.totalPage}]" @click="handleNext">下一页</div></template></div></template><template slot-scope="scope">{{ scope.row.colData[item.index].colValue }}</template></el-table-column></el-table></div>
</template><script>export default {data () {return {tableData: [],fullColData: [],showColData: [],colPage: {current: 1,size: 10,totalPage: 0},tampTime: ''}},created () {this.initTableData()},methods: {// 模拟一些数据initTableData () {const result = []for (let i = 0; i < 10; i++) {const obj = {name: '张三',age: 18,gender: '男',colData: []}for (let j = 0; j < 40; j++) {obj.colData.push({colLabel: `列${j + 1}`,colValue: `${i + 1}_${j + 1}`})}result.push(obj)}this.tableData = resultthis.initColData()},// 初始化列initColData () {const { tableData, colPage } = thisconst { colData: fullColData } = tableData[0]// 添加索引，用于取数据fullColData.forEach((item, index) => {item.index = index})this.fullColData = fullColDatalet showColData = fullColDataif (fullColData.length > colPage.size) {showColData = fullColData.slice(0, 10)}this.showColData = showColDatathis.colPage.totalPage = Math.ceil(fullColData.length / colPage.size)},// 上一页handlePrev () {let { current } = this.colPageif (current > 1) {current--this.colPage.current = currentthis.changeCellData()}},// 下一页handleNext () {let { current, totalPage } = this.colPageif (current < totalPage) {current++this.colPage.current = currentthis.changeCellData()}this.$forceUpdate()},// 根据页数改变列数据changeCellData () {const { colPage, fullColData } = thisconst startSlice = (colPage.current - 1) * colPage.sizeconst endSlice = startSlice + colPage.sizeconst showColData = fullColData.slice(startSlice, endSlice)this.showColData = showColDatathis.tampTime = new Date().valueOf()}}
}
</script><style lang="scss" scoped>
::v-deep .el-table {// 默认是 hidden 按钮超出会隐藏.el-table__header-wrapper,th.el-table__cell,.cell {overflow: visible;}.custom-header-cell {position: relative;.label {position: relative;z-index: 2;color: #000;}.prev-btn,.next-btn {width: 20px;padding: 6px 0;position: absolute;z-index: 9;top: -12px;background-color: #3f3fbb;color: #fff;text-align: center;font-weight: 400;line-height: 18px;transition: all .4s;&:hover {cursor: pointer;opacity: .8;}&.disabled {cursor: not-allowed;background-color: #a6a7e2;}}.prev-btn {left: -30px;}.next-btn {right: -10px;}}
}
</style>