FormData 获取不到值

Question

<form id="file">    <input accept="audio/*" name="file" id="test" type="file" />上传语音文件    <button style="position: absolute;bottom: 0;left: -40px;" @click="test()">上传</button></form>var file = new FormData(document.getElementById("file"));console.log(file);https://jsfiddle.net/4g639vwz/为啥获取不到值，打印的是空的！

Answer 1

你要这样打印：

for (var [key, value] of file.entries()) { 

  console.log(key, value);

}