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criker / sudoku-knacker.de exporter

// ==UserScript==
// @name         sudoku-knacker.de exporter
// @namespace    https://www.sudoku-knacker.de
// @version      0.12
// @description  You can export Sudokus from sudoku-knacker.de
// @author       Ingo
// @match        https://www.sudoku-knacker.de/*
// @grant        none
// @license      MIT
// ==/UserScript==

setInterval(function () {
  lookup()
}, 5000)
var sudokufieldcell = "waiting for data";
var node = document.createElement("P");
var textnode = document.createTextNode(sudokufieldcell);
node.appendChild(textnode);
node.setAttribute("id", "bitte-kopieren");
document.getElementsByClassName("d-print-none")[16].appendChild(node);
lookup();

function lookup() {
  var i;
  sudokufieldcell = "";
  for (i = 1; i <= 81; i++) {
    if (document.getElementById("sudoku-field-cell-" + [i]).textContent >= 1 && document.getElementById("sudoku-field-cell-" + [i]).textContent <= 9) {
      sudokufieldcell += document.getElementById("sudoku-field-cell-" + [i]).textContent;
    }
    else {
      sudokufieldcell += ".";
    }
  }
  sudokufieldcell = sudokufieldcell.replaceAll(' ', '');
  document.getElementById("bitte-kopieren").textContent = sudokufieldcell;
}