导入表格

document.querySelector("input").onchange = function fildfunction() {
        let reader = new FileReader()
        reader.readAsBinaryString(this.files[0]);
        reader.onload = function () {
            try {
                workbook = XLSX.read(reader.result, {type: 'binary'}), // 以二进制流方式读取得到整份excel表格对象
                persons = []; // 存储获取到的数据
            } catch (e) {
                console.log('文件类型不正确');
                return;
            }
            // 表格的表格范围，可用于判断表头是否数量是否正确
            var fromTo = '';
            console.log(workbook);
            alert("11")
                // 遍历每张表读取
                for (var sheet in workbook.Sheets) {
                    if (workbook.Sheets.hasOwnProperty(sheet)) {
                        fromTo = workbook.Sheets[sheet]['!ref'];
                        console.log(fromTo);
                        persons = persons.concat(XLSX.utils.sheet_to_json(workbook.Sheets[sheet]));
                        break; // 如果只取第一张表，就取消注释这行
                    }
                }

                console.log(persons);
        }
    }