function solve() {
   document.querySelector('#searchBtn').addEventListener('click', onClick);

   function onClick() {
      let textToMatch = document.getElementById('searchField').value; //searched text
      document.getElementById('searchField').value = ''; //set text to empty for the next click
       //-------------------------------------------------------------------

       let row = document.querySelectorAll('tr')// get all rows

       //-------------------------------------------------------------------
       //-------------------------------------------------------------------
       for (let i = 0; i<row.length; i++)
       {

            row[i].classList.remove('select');
         // clear all classes for the next search
      }
 //-------------------------------------------------------------------

      for (let i = 0; i<row.length; i++)
      {

         let cells = document.getElementsByTagName('tr')[i].document.getElementsByTagName('td');
          // get the cells of the selected row

         for (let cell = 0; i<cells.length; i++)
         {
         if (cells[cell].includes(textToMatch))
           {
            row[i].classList.add('select');   break;
           } // for each row that contains cells with match, add select class to the row
         }

      }


   }

}