Download inbrowser http://www.rong-chang.com/usalife/a/usalife001a.htm

usalife.download.inbrowser.js

function download(url) {
  var a = document.createElement('a');
  a.setAttribute('href', url);
  a.setAttribute('download', '');
  a.click();
}

var indexs = [];
for(let i=1; i<=61; i++) indexs.push(i);

indexs.forEach(i => {
  var long2i = i<10 ? ('0' + i) : i;
  var long3i = i<10 ? ('00' + i) : ('0' + i);
  setTimeout(() => {
    [
      `http://www.rong-chang.com/usalife/audio/t/usalife${ long2i }a.mp3`,
      `http://www.rong-chang.com/usalife/audio/c/usalife${ long2i }b.mp3`,
      `http://www.rong-chang.com/usalife/a/usalife${ long3i }a.htm`,
      `http://www.rong-chang.com/usalife/b/usalife${ long3i }b.htm`
    ].forEach((url, index) => {
      index ? setTimeout(() => download(url),index*3000) : download(url);
    });
  },(i-1)*10000);
});