let grid = [];
    function redirect()
    {
        localStorage.setItem("newGrids", JSON.stringify(grid));
        window.location.href = 'easterEgg.html';
    }
    
    function makeTable()
    {
        if (localStorage.newGrids) 
        {
            var retrievedData = localStorage.getItem("newGrids");
            grid = JSON.parse(retrievedData);
        {
        else 
       {
            for (let row = 0; row < numRows; row++)
            {
               let temp = [];
               for (let col = 0; col < numCols; col++)
            {
               temp.push(new GuessCell('-'));
            }
               grid.push(temp);
           }   
      }

Here is the code. I want to assign the value of "grid" to "newGrids"(in local storage) when the code goes to a new page and then put the value back into "grid" when the page loads again. The code is not saving the grid when run.