Javascript – Improve the algorithm for reading json and creating a table

I am a beginner. generateTable() is called in the onload() of the body tag. The link is planned to open the api with a parameter. The parameter is a number. In the function getTheadNames() json structure from which I take data to create the table.

function generateTable() {
  const jsons = "";
  const obj = JSON.parse(jsons);
  const tbl = document.createElement("table");

  let caption = document.createElement("caption");
  caption.textContent = "test";
  tbl.appendChild(caption);

  const tblHead = document.createElement("thead");
  const tblBody = document.createElement("tbody");

  var row = document.createElement("tr");
  var cell = document.createElement("th");

  createPartOfTable(row, cell);

  tblHead.appendChild(row);
  tbl.appendChild(tblHead);

  for (let i = 0; i < obj.length; i++) {
    row = document.createElement("tr");
    cell = document.createElement("td");
    createPartOfTable(row, cell, i, obj);
    tblBody.appendChild(row);
  }

  tbl.appendChild(tblBody);
  document.body.appendChild(tbl);
  tbl.setAttribute("class", "table");
}

function getTheadNames() {
  return ["number", "date", "warehouse", "packed", "base", "comment", "total"];
}

function createPartOfTable(row, cell, i = 0, obj = null) {
  let names = getTheadNames();
  for (let j = 0; j < names.length; j++) {
    var nameNode = names[j];
    cell = document.createElement(cell.nodeName);
    if (cell.nodeName == "TH") var cellText = document.createTextNode(nameNode);
    else {
      var textNode = obj[i][Object.keys(obj[i])[j] || {}];
      if (nameNode == "number") {
        const linkText = document.createTextNode(textNode);
        const link = document.createElement("a");
        link.href = "APIlink?number=" + textNode;
        link.appendChild(linkText);
        cellText = link;
      } else cellText = document.createTextNode(textNode);
    }
    cell.appendChild(cellText);
    row.appendChild(cell);
  }
}

Please tell me how I can improve my algorithm and what mistakes I made. I would like the code to be easier to read. Maybe there is a solution in some libraries I don’t know about.
The code itself works and creates a table, example json below

[
{
    "number": "000000001",
    "date": "2023-11-14T10:26:00",
    "warehouse": "test",
    "packed": "user",
    "base": "",
    "comment": "",
    "total": 1
},
{
    "number": "000000002",
    "date": "2023-11-14T10:26:00",
    "warehouse": "test",
    "packed": "user",
    "base": "",
    "comment": "test",
    "total": 1
}]