<div class='Row1'>
    <button class="clear" id="allClear">AC</button>
    <button  id="plus-minus">+/-</button>
    <button class="operators" id="decimal">.</button>
    <button class="operators divide">&divide;</button>
  </div>
    </td>
    </tr>
  <!-- new line -->
    <tr>
      <td>
  <div class "row2">
    <button class="num-button seven">7</button>
    <button class="num-button eight">8</button>
    <button class="num-button nine">9</button>
    <button class="operators multiply">x</button>
  </div>
      </td>
    </tr>

$('.operators').click(function(){
   if(check()) {
     $('.display').val('ERR');
    } else {
    var displayVal = $('.display').val();
    operator = $(this).text();
    var showOpp = displayVal + operator;
    $('.display').val(showOpp);
    }
 });

  /*
   * Takes display value as a string and does calculation
   */
  $('#equal').click(function() {
    var calculation = $('.display').val();
    var operatorIndex = calculation.indexOf(operator);
    var value1 = parseFloat(calculation.slice(0,operatorIndex));
    var value2 = parseFloat(calculation.slice(operatorIndex+1));
    console.log(value1);
    console.log(value2);
    var operation = '';
    switch(operator) {
        case '÷':
       operation = divide(value1,value2);
          break;
        case 'x':
          operation = multiply(value1,value2);
          break;
        case '+':
          operation = add(value1,value2);
          break;
        case '-':
          operation = sub(value1,value2);
          break;
    }
  $(".display").val(operation);

  })

  $('#decimal').click(funciton(){


   })