Vue3+Element Plus实现el-table跨行显示（非脚手架）

app组件内容

 <div id="app">
        <!-- 远程搜索 -->
        <el-form :inline="true" :model="formInline" class="demo-form-inline">
            <el-form-item label="任务名称：" style="margin-left:30px;">
                <el-select v-model="value" filterable remote clearable reserve-keyword placeholder="Please enter a keyword" :remote-method="remoteMethod" :loading="loading">
                    <el-option v-for="item in options" :key="item.CODE" :label="item.NAME" :value="item.CODE" />
                </el-select>
            </el-form-item>
            <el-form-item>
                <el-button type="primary" @click="onSubmit">查询</el-button>
            </el-form-item>
        </el-form>
        <!-- 表格数据 -->
        <el-table :data="tableData" stripe border style="width: 98%;" :span-method="objectSpanMethod" max-height="650">
            <el-table-column fixed prop="CODE" label="编码" width="60"></el-table-column>
            <el-table-column prop="NAME" label="名称"></el-table-column>
            <el-table-column prop="FREQUENCY" label="频次" width="80"></el-table-column>
            <el-table-column prop="FNAME" label="执行科室" width="150"></el-table-column>
            <el-table-column prop="FILENAME" label="文件名称"></el-table-column>
            <el-table-column prop="STATUS" label="状态" width="80"></el-table-column>
            <el-table-column prop="CREATEID" label="上传人" width="80"></el-table-column>
            <el-table-column prop="CREATEDATE" label="上传时间"></el-table-column>
        </el-table>
    </div>

使用:span-method="objectSpanMethod"自定义方法实现跨行显示

const objectSpanMethod = ({
                    row,
                    column,
                    rowIndex,
                    columnIndex
                }) => {
                    const columnsToSpan = ['CODE', 'NAME', 'FNAME', 'FREQUENCY']; // 列名数组
                    if (columnsToSpan.includes(column.property)) {
                        if (rowIndex === 0 || row[column.property] !== tableData.value[rowIndex - 1][column.property]) {
                            // 如果是相同 "NAME" 的第一行，则返回正确的 rowspan 和 colspan
                            let rowspan = 1;
                            for (let i = rowIndex + 1; i < tableData.value.length; i++) {
                                if (tableData.value[i][column.property] === row[column.property]) {
                                    rowspan++;
                                    tableData.value[i]._rowspan = 0; // 隐藏后续行的 "NAME"
                                } else {
                                    break;
                                }
                            }
                            return {
                                rowspan,
                                colspan: 1
                            };
                        }
                        return {
                            rowspan: 0,
                            colspan: 0
                        }; // 隐藏相同 "NAME" 的后续行
                    }
                    return {
                        rowspan: 1,
                        colspan: 1
                    };
                }

查询方法

                const onSubmit = (boolen) => {
                    // 在这里获取输入的值
                    const inputValue = value.value;
                    if ((inputValue !== null && inputValue !== undefined && inputValue !== '') || boolen) {
                        // console.log("Input Value:", inputValue);
                        // axios.get(UJCAjaxBaseUrl + "/请求地址", {
                        //     params: {
                        //         TaskId: inputValue
                        //     }
                        // }).then((response) => {
                        //     console.log("response:" + response.data.data);
                        //     tableData.value = response.data.data;
                        //     return true;
                        // }).catch((error) => {
                        //     console.error('发生错误：', error);
                        //     return false;
                        // });
                    } else {
                        showErrorMessage('请搜索并选择您要查询的细则编码或细则名称!');
                        return false;
                    }

初始化挂载

  //初始化挂载
                onMounted(() => {
                    list.value = states.map((item) => {
                        return {
                            value: item
                        };
                    });
                    onSubmit(true);
                });

新建一个html即可进行测试，完整代码如下

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Vue 3 回车键示例</title>
    <!-- 引入 Vue 3 和 Element Plus -->
    <!-- 包含 Vue 3 库 -->
    <script src="https://cdn.jsdelivr.net/npm/vue@3.3.4/dist/vue.global.min.js"></script>
    <!-- 包含 Element Plus 的 CSS 样式 -->
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/element-plus@2.3.9/dist/index.min.css">
    <!-- 包含 Element Plus 的 JavaScript 文件 -->
    <script src="https://cdn.jsdelivr.net/npm/element-plus@2.3.9/dist/index.full.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/axios/1.5.0/axios.min.js"></script>

</head>

<body>
    <div id="app">
        <!-- 远程搜索 -->
        <el-form :inline="true" :model="formInline" class="demo-form-inline">
            <el-form-item label="任务名称：" style="margin-left:30px;">
                <el-select v-model="value" filterable remote clearable reserve-keyword placeholder="Please enter a keyword" :remote-method="remoteMethod" :loading="loading">
                    <el-option v-for="item in options" :key="item.CODE" :label="item.NAME" :value="item.CODE" />
                </el-select>
            </el-form-item>
            <el-form-item>
                <el-button type="primary" @click="onSubmit">查询</el-button>
            </el-form-item>
        </el-form>
        <!-- 表格数据 -->
        <el-table :data="tableData" stripe border style="width: 98%;" :span-method="objectSpanMethod" max-height="650">
            <el-table-column fixed prop="CODE" label="编码" width="60"></el-table-column>
            <el-table-column prop="NAME" label="名称"></el-table-column>
            <el-table-column prop="FREQUENCY" label="频次" width="80"></el-table-column>
            <el-table-column prop="FNAME" label="执行科室" width="150"></el-table-column>
            <el-table-column prop="FILENAME" label="文件名称"></el-table-column>
            <el-table-column prop="STATUS" label="状态" width="80"></el-table-column>
            <el-table-column prop="CREATEID" label="上传人" width="80"></el-table-column>
            <el-table-column prop="CREATEDATE" label="上传时间"></el-table-column>
        </el-table>
    </div>
    <script>
        const {
            createApp,
            reactive,
            ref,
            onMounted,
            onBeforeMount,
            onUpdated,
            ElMessage
        } = Vue;
        const vue3DepartFileStatis = {
            setup() {
                //定义响应数据
                const list = ref([]);
                const options = ref([]);
                const value = ref([]);
                const loading = ref(false);
                const tableData = ref([]); //表格响应式
                let formInline = reactive({
                    keyword: ""
                });
                const isMessageShowing = ref(false);

                //初始化挂载
                onMounted(() => {
                    list.value = states.map((item) => {
                        return {
                            value: item
                        };
                    });
                    onSubmit(true);
                });

                //远程搜索
                const remoteMethod = (query) => {
                    //if (query) {
                    //    loading.value = true;
                    //    setTimeout(() => {
                    //        loading.value = false;
                    //        options.value = list.value.filter((item) => {
                    //            return item.value.toLowerCase().includes(query.toLowerCase())
                    //        });
                    //    }, 200);
                    //} else {
                    //    options.value = [];
                    //}
                    if (query) {
                        loading.value = true;
                        console.log(query);
                        // 发送 Axios 请求
                        axios.get(UJCAjaxBaseUrl + "/请求地址", {
                            params: {
                                TaskName: query
                            }
                        }).then((response) => {
                            loading.value = false;
                            options.value = response.data.data;
                            console.log(response.data.data);
                        }).catch((error) => {
                            console.error('发生错误：', error);
                            loading.value = false;
                        });
                    } else {
                        options.value = [];
                    }
                }

                //封装错误提示
                const showErrorMessage = (message = 'Oops, this is a error message.') => {
                    if (!isMessageShowing.value) {
                        isMessageShowing.value = true;

                        ElementPlus.ElMessage({
                            showClose: true,
                            message: message,
                            type: 'error',
                            onClose: () => {
                                isMessageShowing.value = false;
                            },
                        });
                    }
                };


                //查询
                const onSubmit = (boolen) => {
                    // 在这里获取输入的值
                    const inputValue = value.value;
                    if ((inputValue !== null && inputValue !== undefined && inputValue !== '') || boolen) {
                        // console.log("Input Value:", inputValue);
                        // axios.get(UJCAjaxBaseUrl + "/请求地址", {
                        //     params: {
                        //         TaskId: inputValue
                        //     }
                        // }).then((response) => {
                        //     console.log("response:" + response.data.data);
                        //     tableData.value = response.data.data;
                        //     return true;
                        // }).catch((error) => {
                        //     console.error('发生错误：', error);
                        //     return false;
                        // });
                    } else {
                        showErrorMessage('请搜索并选择您要查询的细则编码或细则名称!');
                        return false;
                    }

                    //模拟数据
                    tableData.value = [{
                        CODE: '001',
                        NAME: 'Item A',
                        FREQUENCY: 'Daily',
                        FNAME: 'Department A',
                        FILENAME: 'File A',
                        STATUS: 'Active',
                        CREATEID: 'User 1',
                        CREATEDATE: '2023-09-06'
                    }, {
                        CODE: '002',
                        NAME: 'Item A',
                        FREQUENCY: 'Weekly',
                        FNAME: 'Department B',
                        FILENAME: 'File B',
                        STATUS: 'Inactive',
                        CREATEID: 'User 2',
                        CREATEDATE: '2023-09-07'
                    }, {
                        CODE: '003',
                        NAME: 'Item B',
                        FREQUENCY: 'Monthly',
                        FNAME: 'Department C',
                        FILENAME: 'File C',
                        STATUS: 'Active',
                        CREATEID: 'User 3',
                        CREATEDATE: '2023-09-08'
                    }, {
                        CODE: '004',
                        NAME: 'Item B',
                        FREQUENCY: 'Daily',
                        FNAME: 'Department A',
                        FILENAME: 'File D',
                        STATUS: 'Inactive',
                        CREATEID: 'User 4',
                        CREATEDATE: '2023-09-09'
                    }]
                }

                //模拟数据
                const states = [];

                const objectSpanMethod = ({
                    row,
                    column,
                    rowIndex,
                    columnIndex
                }) => {
                    const columnsToSpan = ['CODE', 'NAME', 'FNAME', 'FREQUENCY']; // 列名数组
                    if (columnsToSpan.includes(column.property)) {
                        if (rowIndex === 0 || row[column.property] !== tableData.value[rowIndex - 1][column.property]) {
                            // 如果是相同 "NAME" 的第一行，则返回正确的 rowspan 和 colspan
                            let rowspan = 1;
                            for (let i = rowIndex + 1; i < tableData.value.length; i++) {
                                if (tableData.value[i][column.property] === row[column.property]) {
                                    rowspan++;
                                    tableData.value[i]._rowspan = 0; // 隐藏后续行的 "NAME"
                                } else {
                                    break;
                                }
                            }
                            return {
                                rowspan,
                                colspan: 1
                            };
                        }
                        return {
                            rowspan: 0,
                            colspan: 0
                        }; // 隐藏相同 "NAME" 的后续行
                    }
                    return {
                        rowspan: 1,
                        colspan: 1
                    };
                }


                return {
                    list,
                    options,
                    value,
                    loading,
                    remoteMethod,
                    onSubmit,
                    tableData,
                    formInline,
                    objectSpanMethod
                }
            }
        }

        createApp(vue3DepartFileStatis)
            .use(ElementPlus).mount("#app"); // 挂载应用到指定元素上
    </script>

</body>

</html>

效果图

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