将Blob转换为文件 [英] Convert blob to file

问题描述

我需要将Blob转换为javascript文件.

I need to convert a blob to file i javascript.

我正在使用File API

Im using File API

var blob = new Blob(byteArrays, { type: contentType });

这是从读取裁剪图像的函数返回的.

This is return from a function reading a cropped images.

旧的上传功能正在使用$ files作为输入.

The old upload function are using $files as input.

我想将该Blob转换为文件，然后设置名称并在该对象中键入.我该怎么做?

I want to convert that blob to file, and then set the name and type in that object. How do I do this??

推荐答案

很简单:

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

或者只是:

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

该代码可在Chrome和Firefox中运行，但不适用于IE.

The code works in Chrome and Firefox, but not IE.

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