element实现分页

<template>
    <div id="app">
        <el-card>
            <!-- 表格 -->
            <div id="table">
                <el-table :data="news.slice((currentPage - 1) * pageSize, currentPage * pageSize)" tooltip-effect="dark">
                    <el-table-column type="selection" width="55" >
                    </el-table-column>
                    <el-table-column prop="news_time" label="发送时间" width="120">
                    </el-table-column>
                    <el-table-column prop="news_sender" label="发送人" width="120">
                    </el-table-column>
                    <el-table-column prop="news_state" label="状态" width="120">
                    </el-table-column>
                    <el-table-column prop="news_content" label="内容">
                    </el-table-column>
                    <el-table-column fixed="right" label="操作" width="100">
                        <template slot-scope="scope">
                            <el-button @click="check" type="text" size="small">
                                查看
                            </el-button>
                        </template>
                    </el-table-column>
                </el-table>
            </div>
            <!-- 分页 -->
            <div class="block">
                <el-pagination :current-page.sync="currentPage" :page-size="8" layout="total, prev, pager, next"
                    :total="news.length">
                </el-pagination>
            </div>
        </el-card>
    </div>
</template>

<script>
    export default {
        name: 'user_news',
        data() {
            return {// 消息
                news: [],
                // 一页显示多少
                pageSize: 8,
                // 页数
                currentPage: 1,
            }
        },
    }
</script>