ratio.js

ratio.js

function run() {

  function valueToLabel(value) {
    console.log("value = " + value);
    let label = value;
    if (value === Infinity) {
      label = "∞";
    } else if (value >= 1000000) {
      label = (value / 1000000).toFixed(1) + 'M';
    } else if (value >= 1000) {
      label = (value / 1000).toFixed(1) + 'K';
    } else {
      label = value.toFixed(1);
    }
    console.info("label = " + label);
    return `${label}:1`;
  }

  function labelToValue(str) {
    str = str.trim();
    let multiplier = 1;
    if (str.includes('K')) {
      multiplier = 1000;
      str = str.replace('K', '');
    }
    if (str.includes('M')) {
      multiplier = 1000000;
      str = str.replace('M', '');
    }
    return parseInt(parseFloat(str) * multiplier);
  }

  followersElem = document.querySelector("[data-testid='profileHeaderFollowersButton']");

  followersValue = labelToValue(followersElem.querySelectorAll("span")[0].innerText);
  followingElem = document.querySelector("[data-testid='profileHeaderFollowsButton']");
  followingValue = labelToValue(followingElem.querySelectorAll("span")[0].innerText);
  console.log(followersValue);
  console.log(followingValue);

  ratio = followersValue / followingValue;
  console.log(ratio);

  let clone = followersElem.cloneNode(true);
  followersElem.parentNode.prepend(clone);
  let spans = clone.querySelectorAll("span");
  spans[0].innerText = valueToLabel(ratio);
  spans[1].innerText = " followers-to-following ratio";

  followersElem.parentNode.removeChild(followersElem);
  followingElem.parentNode.removeChild(followingElem);
}
run();