mutag：一个简单的 mp3 文件标签解析器

<script src="../dist/mutag.min.js"></script>
<script>
    const mutag = window.mutag;
    // the type of input element is 'file'
    const inputDOM = document.querySelector('.file-input');
    inputDOM.addEventListener('change', e => {
        const file = e.target.files[0];
        mutag.fetch(file).then((tags) => {
            //get all tags
            console.log(tags);
        });
    }, false);

const fs = require('fs');
const mutag = require('mutag');

fs.readFile('path/to/file.mp3', (err, data) => {
  mutag.fetch(data).then((tags) => {
    //get all tags
    console.log(tags);
  });
});