URLs

• chain of funtions to hanlde urls:

function getExt(url) {
  if (url.includes("?")) {
    return getExt(url.split("?")[0]);
  }
  if (url.includes("#")) {
    return getExt(url.split("#")[0]);
  }

  //change those functions depends on the situation
  return url.trim().toLowerCase().split(".").pop();
}

• regular expressions again, to handle urls:

let regex = /^(?<start>https|http)?(?<colon_slashes>:\/\/)?(?<three_w>www.)?(?<main>[\w\-\_\:]+)(?<dot_com>\.[\w]+)\/*(?<text1>[\w\-\_\#\?\&\=]*)\/*(?<text2>[\w\-\_\#\?\&\=]*)\/*(?<text3>[\w\-\_\#\?\&\=]*)/;