The perfect combination of Vue and Excel: how to export data in batches

The perfect combination of Vue and Excel: How to implement batch export of data

In many front-end developments, exporting data to Excel is a common requirement. As a popular JavaScript framework, Vue provides many convenient tools and methods to achieve this function. This article will introduce how to use Vue and Excel.js libraries to implement the batch export function of data.

First, we need to install the Excel.js library. You can use the npm package manager to install:

npm install exceljs --save

After the installation is complete, we can introduce the exceljs library into the Vue component and create an export function to handle the logic of data export. The following is a sample code:

<script>
import ExcelJS from 'exceljs';

export default {
  data() {
    return {
      // 数据数组
      data: [
        { name: '张三', age: 18, gender: '男' },
        { name: '李四', age: 20, gender: '女' },
        { name: '王五', age: 22, gender: '男' },
      ],
    };
  },
  methods: {
    exportData() {
      const workbook = new ExcelJS.Workbook();
      const worksheet = workbook.addWorksheet('Sheet 1');

      // 表头
      worksheet.columns = [
        { header: '姓名', key: 'name', width: 10 },
        { header: '年龄', key: 'age', width: 10 },
        { header: '性别', key: 'gender', width: 10 },
      ];

      // 表数据
      this.data.forEach((item, index) => {
        const rowIndex = index + 2;
        worksheet.addRow({
          name: item.name,
          age: item.age,
          gender: item.gender,
        });
      });

      // 导出Excel
      workbook.xlsx.writeBuffer().then((buffer) => {
        const blob = new Blob([buffer], { type: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet' });
        const url = URL.createObjectURL(blob);
        const link = document.createElement('a');
        link.href = url;
        link.download = 'data.xlsx';
        link.click();
        URL.revokeObjectURL(url);
      });
    },
  },
};
</script>

In the above sample code, we first introduced the exceljs library, and then defined a data array in the data option. In the exportData method, we create a new Excel workbook and worksheet, and then set the table header and table data. Finally, we use the method provided by exceljs to export the workbook as an Excel file and download the file by creating a download link.

In the Vue component, we can trigger the export operation through buttons or other interactive methods. For example, add a button to the template:

<template>
  <div>
    <button @click="exportData">导出数据</button>
  </div>
</template>

By clicking the button, you can export the data to an Excel file.

It should be noted that since the export of Excel files is performed in the browser, we need to use Blob and URL objects to handle file downloads. At the same time, before exporting the Excel file, we need to save the Excel workbook as a buffer object and convert the buffer object to a Blob object.

Through the above steps, we can use Vue and exceljs libraries to implement the batch export function of data. Whether exporting tabular data or exporting other types of data, we can handle it according to specific needs.

Summary:

This article introduces how to use Vue and exceljs libraries to implement the batch export function of data. Through the above sample code, we can easily export the data to an Excel file, download and save it. I hope this article will help you implement the data export function in Vue development.

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