downloadQrcodeFn(data){
let _this=this
downLoadFileExportQrCode({
useObject:_this.activeName=='first'? "person" : 'vehicle',
deviceSn:_this.deviceSn,
cm:data.date
}).then((res)=>{
if (res) {
var btn = document.createElement("a");
btn.id = "download";
btn.setAttribute("download", 'test.jpg');
btn.setAttribute("href", 'data:image/jpeg;base64,'+res);
btn.click(); // 自执行点击事件
btn.remove();
}else {
_this.$message({type: "info",message: res.msg});
}
})
},
