前端下载页面数据文件到本地

// 下载数据，保存为excel
            handleDownload: function (index, row) {
                console.log('handleDownload');
                console.log(row);
                let fileName = "machine_device_code_info.csv";
                // 字符串前加\ufeff就不会出现中文乱码的情况
                //excel中逗号换列，\n 换行
                let result = "\ufeff设备码,设备类型,设备数量,硬件版本号,批次号,生产厂商\n"
                    +row.machineCode+","
                    +row.deviceType+","
                    +row.deviceNumber+","
                    +row.hardwareVersion+","
                    +row.batchNumber+","
                    +row.manufacturer;
                let blob = new Blob([result], {type: 'text/csv;charset=utf-8;'});
                let downloadLink = document.createElement("a");
                if ('download' in downloadLink) { // feature detection, Browsers that support HTML5 download attribute
                    let url = URL.createObjectURL(blob);
                    downloadLink.href = url;
                    downloadLink.download = fileName;
                    downloadLink.hidden = true;
                    document.body.appendChild(downloadLink);
                    downloadLink.click();
                    document.body.removeChild(downloadLink);
                }else{
                    if(navigator.msSaveBlob){ //IE10+
                        navigator.msSaveBlob(blob, fileName);
                    }
                }
            },