JavaScript blob类型转file类型

var blob = new Blob(byteArrays, { type: contentType });
//blob转file
var file = new File([blob], filename, {type: contentType, lastModified: Date.now()});
//或者
var file = new File([byteArrays], filename, {type: contentType, lastModified: Date.now()});

注：该代码适用于Chrome和Firefox，但不适用于IE

 

转载自：https://stackoverflow.com/questions/27553617/convert-blob-to-file