HTML5下载属性…有时文件名是通用的Download.xlsx

Question

I am using Chrome Dev and Chrome canary and the filename of the downloaded file sometimes is called Download.xlsx instead of what I name it.

Sometimes it works great, othertimes its the wrong file name

I am created a detached dom node and firing it

var link = document.createElement('a');
        angular.element(link)
            .attr('download', response.data.fileDownloadName)
            .attr('href', 'data:application/vnd.openxmlformats-officedocument.spreadsheetml.sheet;base64,' + response.data.fileContents);
        link.click();

rendered html:

<a download="Report.xlsx" href="data:application/vnd.openxmlformats-officedocument.spreadsheetml.sheet;base64,UEsDBBQAAAAIAAAAIQD8JIb71AIAA...

Answer 1

The behaviour your describe happens if response.data.fileDownloadName is undefined . In that case the generated filename will be download.extension . Note however that this would be with a lowercase d at least in chrome unlike the D you mention in your question.