Intelligent combination of Vue and Excel: how to realize automatic summary and export of data

The intelligent combination of Vue and Excel: how to realize automatic summary and export of data

With the development of Internet technology, the front-end framework Vue is increasingly widely used in Web development. As a representative of office software, Excel has unique advantages in data processing and analysis. This article will introduce how to realize automatic summary and export of data through the intelligent combination of Vue and Excel.

1. Introduce the Excel.js library
   First, install and introduce the Excel.js library into the Vue project. Excel.js is a JavaScript library for creating and manipulating Excel files in the browser, through which we can generate and process Excel files.

npm install exceljs

Introducing the Excel.js library into the Vue component:

import ExcelJS from 'exceljs';

2. Data summary and export
   Next, let’s look at an example: Suppose we have a For a data list, it is necessary to summarize the data in some fields and export the results to an Excel file.

First, define a data list:

data() {
  return {
    dataList: [
      { name: '张三', age: 20, gender: '男' },
      { name: '李四', age: 22, gender: '女' },
      { name: '王五', age: 21, gender: '男' },
      { name: '赵六', age: 23, gender: '女' },
    ],
  };
},

Then, define a method to implement data summary and export:

methods: {
  exportExcel() {
    // 创建Excel工作簿
    const workbook = new ExcelJS.Workbook();
    const worksheet = workbook.addWorksheet('Sheet1');

    // 设置表头
    worksheet.addRow(['姓名', '年龄']);

    // 汇总数据并添加至Excel工作簿
    this.dataList.forEach(item => {
      worksheet.addRow([item.name, item.age]);
    });

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

In the above code, We created a workbook through ExcelJS, then added a worksheet to the workbook and set the header. Then, use forEach to traverse the data list and add the required data to the worksheet. Finally, export the workbook to an Excel file through the export function of Excel.js.

3. Page call
   Finally, add a button to the page of the Vue component to call the method of exporting Excel:

<template>
  <div>
    <button @click="exportExcel">导出Excel</button>
  </div>
</template>

After clicking the button, you can Automatically export Excel files and save them locally.

Summary
This article introduces how to realize automatic summary and export of data through the intelligent combination of Vue and Excel.js. Excel files are generated through Excel.js, and the files are downloaded through the browser's Blob and a tags. In practical applications, we can appropriately adjust and expand the code according to specific needs to achieve more complex data processing and export functions. Using the intelligent combination of Vue and Excel, we can process and analyze data more efficiently and improve work efficiency.

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