const fs = require('fs/promises'); const readFile = fs.readFile; readFile("lipsum.txt", { encoding: 'utf-8' }) .then((data) => {...}) .catch((err) => {...})使用fs.readFile和util.promisify const fs = require('f
("MyWorksheet").shapes;letshape = shapes.getItem("Image");letstringResult = shape.getAsImage(Excel.PictureFormat.png);awaitcontext.sync();console.log(stringResult.value);// Instead of logging, your add-in may use the base64-encoded string to save the image as a file or insert it in ...
const readFile = util.promisify(fs.readFile); readFile("lipsum.txt", { encoding: 'utf-8' }...
In this case, the user is forced to select the data directly from the browser, and then copy & paste it into Excel. BACK-END, generates the Excel file on the server. I am pretty sure that for whatever back-end you are using (.NET, Java, Node.js, PHP, ...) there are many ...
示例： 从 CSV 或 Excel 文件读取数据并执行查询。// 从CSV文件读取数据alasql('CREATE FILE FROM ?',['./data.csv']);var csvData =alasql('SELECT * FROM data.csv');// 从Excel文件读取数据alasql('CREATE FILE FROM ?',['./data.xlsx']);var excelData =alasql('SELECT * FROM data.xlsx');...
xresloader_datablocks.data_block的个数就是Excel转出的数据行数,注意包含空行 如果你使用官方的protobuf或protobuf-lite,可以使用loader-binding/cxx来加载配置 sample 参见:sample/cxx/read_kind_sample.cpp 如果你使用云风的pbc,可以使用loader-binding/pbc来加载配置 ...
WorksheetCollection addFromBase64(base64File: string, sheetNamesToInsert?: string[], positionType?: Excel.WorksheetPositionType, relativeTo?: Worksheet | string) Inserts the specified worksheets of a workbook into the current workbook. onFiltered Occurs when any worksheet's filter is applied in the...
问使用Javascript和C# Web将文件转换为二进制文件ENSVG（Scalable Vector Graphics）是一种基于XML的矢量图像格式，它可以在不失真的情况下无限放大。然而，不是所有的设备和应用都支持SVG格式，而PNG（Portable Network Graphics）格式在互联网上得到了广泛的支持，它支持透明度并且无损压缩。因此，有时我们需要将SVG文件...
handleCSVFile(file) { readCSVFile(file) .then(csvContent => { const sum = parseCSVAndCalculateSum(csvContent); console.log("Sum:", sum); }) .catch(error => { console.error("Error:", error); }); } // 示例:选择CSV文件并处理 const fileInput = document.getElementById("csvFile...
Array Explorer and Object Explorer - Resources to help figure out what native JavaScript method would be best to use at any given time. Clipboard.js - "Copy to clipboard" without Flash or use of Frameworks. ky - Tiny and elegant HTTP client based on the browser Fetch API. Fcal - Math ...