Test form submission

HTML

<form id="submitCreateCampaignForm" action="createCampaign02" method="post" commandName="campaignModel">
  <table border="0">
    <tr>
      <td style="width: 140px;">Campaign Name:</td>
      <td style="width: 300px;" colspan="4">
        <input name="campaignName" style="width:84%" />
      </td>
    </tr>
    <tr>
      <td>Campaign Duration:</td>
      <td colspan="1">
        <input type="text" name="fromDate" class="date-picker" />
      </td>
      <td colspan="1">
        <input type="text" name="toDate" class="date-picker" />
      </td>
      <td style="width: 250px"></td>
      <td style="width:250px"></td>
    </tr>
    <tr>
      <td>Campaign Type:</td>
      <td colspan="2">
        <input type=radio name="campaignType" items="${campaignTypeList}" />
      </td>
      <td>
        <button class="yellowButton" id="submitCreateCampaignButton">NEXT: CHARACTERISTICS</button>
      </td>
    </tr>
  </table>
</form>

CSS

.red {background-color:red;}

JavaScript

$(document).ready(function() {
  $("#submitCreateCampaignForm").submit(function(e) {

    var $form = $(this);
    var errors = 0;
    
		$form.find("input").removeClass("red");
    var campaignName=$form.find("input[name=campaignName]").val()
    
    if (!errors && campaignName == "") {
      $form.find("input[name=campaignName]").addClass("red");
      errors++;
    }
    
    var fromDate=$form.find("input[name=fromDate]").val()
    
    if (!errors && fromDate == "" ) {
      $form.find("input[name=fromDate]").addClass("red");
      errors++;
    }
    if (!errors && !isValidDate(fromDate)) {
      $form.find("input[name=fromDate]").addClass("red");
      errors++;
    }
		
    // ...
    
    if (errors) e.preventDefault();
  });
});

// http://stackoverflow.com/questions/14636536/how-to-check-if-a-variable-is-an-integer-in-javascript/14794066#14794066

function isInt(value) {
  if (isNaN(value)) return false;
  var f=parseFloat(value);
  return f==(f|0);
}

// http://stackoverflow.com/questions/276479/javascript-how-to-validate-dates-in-format-mm-dd-yyyy
function isValidDate(date) {
    var matches = /^(\d{2})[-\/](\d{2})[-\/](\d{4})$/.exec(date);
    if (matches == null) return false;
    var d = matches[2];
    var m = matches[1] - 1;
    var y = matches[3];
    
    if(y>2100 || y<1900) return false; // accept only recent & not too far years
    
    var composedDate = new Date(y, m, d);
    return composedDate.getDate() == d &&
            composedDate.getMonth() == m &&
            composedDate.getFullYear() == y;
}