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download & excel & blob

Blob

https://developer.mozilla.org/en-US/docs/Web/API/Blob

FileReader

https://developer.mozilla.org/en-US/docs/Web/API/FileReader

download & excel

backend auto download

A response triggering the "Save As" dialog:

https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Disposition#Examples

Content-Type: text/html; charset=utf-8
Content-Disposition: attachment; filename="cool.html"
Content-Length: 22

excel & content-type

type: "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",

Excel & Content-Type

const File = {
    name: "test.xlsx", 
    lastModified: 1551442905961, 
    lastModifiedDate: Fri Mar 01 2019 20:21:45 GMT+0800 (China Standard Time), 
    webkitRelativePath: "", 
    size: 8957,
    type: "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
};