javascript导入excel文件

导入文件用到一个 xlsx.core.js 的包。

<!DOCTYPE html>
<html lang="en"><head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><script type="text/javascript" src="./xlsx.core.min.js"></script><title>Document</title>
</head><body><input type="file" id="file" style="display:none;" /><button onclick="importFile()">导入</button>
</body>
<script type="text/javascript" src="./index.js"></script>
</html>

隐藏 input 框，加一个 button 按钮可以方便的调节按钮的样式。

function importFile() {console.log('导入');document.getElementById('file').click();
}document.getElementById('file').addEventListener('change', function (e) {let files = e.target.files;if (files.length == 0) return;let f = files[0];if (!/\.xlsx$/g.test(f.name)) {alert('仅支持读取xlsx格式！');return;}e.target.value = "" // 清空上一次上传的数据，防止第二次无法上传readWorkbookFromLocalFile(f, function (workbook) {readWorkbook(workbook);});
});function readWorkbookFromLocalFile(file, callback) {let reader = new FileReader();reader.onload = function (e) {let data = e.target.result;let workbook = XLSX.read(data, { type: 'binary' });if (callback) callback(workbook);};reader.readAsBinaryString(file);
}function readWorkbook(workbook) {let sheetNames = workbook.SheetNames; // 工作表名称集合console.log(sheetNames, 'sheetNames');let worksheet = workbook.Sheets[sheetNames[0]]; // 读取第一张sheetconsole.log(worksheet, 'worksheet');let json = XLSX.utils.sheet_to_json(worksheet);// let json = XLSX.utils.sheet_to_json(worksheet, { range: 1 }) // range: 1 可以设置是从第几行开始读，不设置从第一行开始读console.log(json, 'json');
}

文件信息。