Log for YSITD

a = document.getElementsByClassName('guide-channels-list')
out = ""
for(var i=1;i<a[0].childElementCount;i+=2){
out += a[0].childNodes[i].firstElementChild.getAttribute('data-external-id') + "\n"
}
console.log(out);

Array.from(document.getElementsByClassName('guide-channels-list')[0].children).forEach((i) => console.log(i.firstElementChild.dataset.externalId))

console.log(Array.from(document.getElementsByClassName('guide-channels-list')[0].childNodes).filter((el, idx) => idx % 2 == 1).map((i) => i.firstElementChild.dataset.externalId).join('\n'))

UCd4JzeAkgTsyJDEkWC11PoA
UC_ViSsVg_3JUDyLS3E2Un5g
UCsgNPUqUqD5VAil-iDJAZQw
UCYKhjw4BT72a1DYDzbXeb_g
UCH62AMbLmJy_PRI8SZS_F5A
UC6FcYHEm7SO1jpu5TKjNXEA
UCNMIUvGvW35xL294jqY3cwg
UC4SBHZXV4BY43Fv1y0vaXuw
UCohQwpkmFWTJ1T7GRr9Il2A
UCnJEWsS5agXCkqIpyHC9Grg
UCO2JQokUTCAv8UEqxxqAOXg
UCg3etekbaG3O31xG12ov5HA
UCz04oSEjdbuQmFT-knH-jjQ
UCSsHvz_aCD9NMXjzWpwg9qA
UCVIycx42aqhp8-ZRyeLN4Gw debugger eval code:1:1

UC3zwjSYv4k5HKGXCHMpjVRg
UC9ImTi0cbFHs7PQ4l2jGO1g
UCDNX3eBBlqBLpjv_b3UiodQ
UC4L4Vac0HBJ8-f3LBFllMsg
UCmVGp8jfZ0VLg_i8TuCaBQw
UCMXFGmpqKAowZMbvz2O2aEw
UCsgNPUqUqD5VAil-iDJAZQw
UCuIvA1N8p68sa9N-9miba8w
UCt388DxXq9rjAWFzxUhosSw
UCU8s-nDqbsKnitUNaVJ2Xvg
UCkOLW6anwi54jmYUBF0e9YQ
UCVxDRChg9uWk0B-aFSTd0Tg
UC3swwxiALG5c0Tvom83tPGg
UCeIFvFTMmHd4Ney7o7A_XQQ
UCdOsR0daJqjpFU2PyIdiQDw
UCSeJA6az0GrNM4_-pl3HQSQ

UCTqPBBnP2T57kmiPQ87986g
UCd4JzeAkgTsyJDEkWC11PoA
UCUHW94eEFW7hkUMVaZz4eDg
UCPcF3KTqhD67ADkukx_OeDg
UCSckEwXBJmJEUzIo6NplQ5g
UCbGrzgowatCRk7x5gVXhz-g
UCNMIUvGvW35xL294jqY3cwg
UCsLiV4WJfkTEHH0b9PmRklw
UCj1ARFTppyQvmfspIjCpzBQ
UCsXVk37bltHxD1rDPwtNM8Q
UCOpNcN46UbXVtpKMrmU4Abg
UCGBqwUkYWcTec_rq5gZTeFw
UCJrOtniJ0-NWz37R30urifQ
UCRNsHFT7BFoAPBcuAa5sgEQ
UC7ovu6a8ydIbDy0fAKmoZ9A
UCBcIWZhWqUwknlxikVHQoyA
UC-9-kyTW8ZkZNDHQJ6FgpwQ

const cheerio = require('cheerio');
const request = require('request');
request('http://www.dlsh.tc.edu.tw/files/40-1001-27-0.php',(err,res,body)=>{
  if(err||res.statusCode !=200){return}
  var $=cheerio.load(body);
  $('.ptname a').each(function(i, elem) {
    console.log($(this).attr('href'))
  })
});