如何将音频文件转为base64 编码

Question

怎么将一个音频文件如.amr文件转为base64 编码(不通过文件上传方式，直接从给出链接转换)

Answer 1

<input type="file" id="fileInput"><script>&nbsp; &nbsp; var fileInput = document.querySelector('#fileInput');&nbsp; &nbsp; fileInput.onchange = function () {&nbsp; &nbsp; &nbsp; &nbsp; var file = this.files[0];&nbsp; &nbsp; &nbsp; &nbsp; var reader = new FileReader();&nbsp; &nbsp; &nbsp; &nbsp; reader.readAsDataURL(file);&nbsp; &nbsp; &nbsp; &nbsp; reader.onload = function () {&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; console.log(reader.result);&nbsp; &nbsp; &nbsp; &nbsp; };&nbsp; &nbsp; };</script>不需要上传文件, 只要选择好文件就能得到base64编码