Change the encoding of FileReader's result to UTF8

Question

I have a small function that retrieves the contents of an uploaded text file.

upload() {
    let reader = new FileReader();
    reader.onload = () => {
        console.log(reader.result);
    }
    reader.readAsText(this.file);
}

It works fine when the encoding of the file uploaded is UTF8, but in my case (using an UTF16_LE encoded file) it adds random spacing between characters, changes some to something different, or transforms them to chinese.

My question is, how can I convert reader.result to UTF8 without having to manually re-save the file itself to UTF8?

Answer 1

FileReader.readAsText()函数具有可选的encoding参数，您可以使用该参数指定用于返回数据的编码。