Ray-Tracing/Moniter Response.html at master · Antonc3/Ray-Tracing · GitHub

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<body>
  <table>

  </table>
</body>
<style>

  tr, td{
    width: 1px;
    height: 1px;
    border: 0px;

  }
</style>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script>
  function checkerboard(size){
    let body = document.querySelector('body');
    let tab = document.createElement('table');
    for(let i = 0; i < size; i++){
      let row = document.createElement('tr');
      for(let k = 0; k < size; k++){
        let temp = i+k;
        //console.log(temp&1)
        if((temp & 1) == 1){
          let cell = document.createElement('td')
          cell.style.background = 'rgb(100,100,100)';
          row.appendChild(cell);

        }
        else{
          let cell = document.createElement('td')
          cell.style.background = 'rgb(0,0,0)';
          row.appendChild(cell);

        }
      }
      tab.appendChild(row);
    }
    body.appendChild(tab);
    //return str;
  }
  function addDiv(width, height){
    jQuery('body').append('<div style="width:' + width + ', height:' + height + '"></div>');
  }
  checkerboard(100);
  //document.querySelector('table').append(str);
</script>