How to Build Minesweeper with JavaScript(mitchum.blog)

    var handleClick = function( id )
    {
        if ( gameOver ) return;
        if ( ctrlIsPressed )
        {
            // do stuff...
            return;
        }
        if ( cell.opened || cell.flagged ) return;
        if ( cell.mined )
        {
            // do stuff...
            return;
        }
        // else do stuff...
        if ( cell.neighborMineCount > 0 )
        {
            // ...
            return;
        }

        // else do final stuff...
    }

    var handleClick = function( id )
    {
        if ( !gameOver )
        {
            // ...lots of code and if statements...
        }
        // ...but no code after the block before returning from the function...
    }

    var handleClick = function( id )
    {
        if ( gameOver ) return; // NOTE: logic check change...
        // ...do the stuff in the block here...
    }

  var getNumberColor = function( number )
  {
      var color = 'black';
      if (number === 1)
      {
          color = 'blue';
      }
      if (number === 2)
      {
          color = 'green';
      }
      // etc        
  }