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
原文：https://www.cnblogs.com/XuYuFan/p/10209277.html