https://node.green/ でv18とv12の差分だけ表示するブックマークレット

bookmarklet.js

javascript:{
  const [v12,v18] = [".v12", ".v18"].map(v=>document.querySelector(v).cellIndex);

  const style = document.createElement("style");
  style.textContent = `
    th, td {display: none}
    td:nth-child(1),
    th:nth-child(${v12 + 1}), th:nth-child(${v18 + 1}),
    td:nth-child(${v12 + 1}), td:nth-child(${v18 + 1})
    {
      display: table-cell;
    }
  `;
  document.head.appendChild(style);
  for (const table of document.body.querySelectorAll("table.results")) {
    for (const row of table.rows) {
      const [v12r,v18r] = [v12, v18].map(v=>row.cells[v]?.textContent);
      if (v12r && v18r && v12r == v18r)
        row.style.display = "none";
    }
  }
}