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jQuery - validating a field based on another field

Posted on 2011-09-27
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Last Modified: 2012-06-27
Hi,

I am trying to validate a field based on wether there is a value entered in another field. There are three fields in three rows. The first row requires all fields to have a value. The second and third row only require the title field to be assigned a value if the name field is used. Please see the attached .htm file. At the moment the form all the title fields are being vaildated, despite there being no values in name2 and name3.

Any help would be greatly appreciated.
<html>

<head>
<meta http-equiv="Content-Language" content="en-gb">
<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
<title>Employee ID</title>
<script type="text/javascript" src="js/jquery-1.4.2.min.js"></script>
<script type="text/javascript" src="js/jquery.validate.min.js"></script>
<script>
$(document).ready(function(){
        $("#registerForm").validate({
        rules: {
               id1: "required",
               name1: "required",
               title1: "required",
               title2: {
				required: function(element) {
				return $("#name2").val();
							}
					}, 
               title3: {
				required: function(element) {
				return $("#name3").val();
							}
					           
                       }
}
});
});
</script>
<style type="text/css">
<!--
	label
{
		display: block;
		color: #FF0000;
		font-style: bold;
}
		-->
</style>
</head>

<body>
<form method="POST" id="registerForm" action="employee_id1.php">
								<table border="1" cellspacing="1"
								 cellpadding="5" width="100%">
								  <tr>
									 <td>
										<table width="100%" cellspacing="5">
										  <tr>

											 <td width="3%">
												&nbsp;</td>

											 <td width="12%">
												employee id</td>

											 <td width="81%">
												name</td>
										  </tr>
										  <tr>

											 <td width="3%">
												1</td>

											 <td width="12%">

												<input name="id1" size="12"></td>

											 <td width="81%">

												<select size="1" value="" name="title1">
												<option selected>
												</option>
												<option value="mr">mr</option>
												<option value="mrs">mrs</option>
												<option value="ms">ms</option>
												<option value="miss">miss
												</option>
												</select><input name="name1" size="12"></td>
										  </tr>
										  <tr>

											 <td width="3%">
												2</td>

											 <td width="12%">

												<input name="id2" size="12"></td>

											 <td width="81%">

												<select size="1" name="title2">
												<option selected>
												</option>
												<option value="mr">mr</option>
												<option value="mrs">mrs</option>
												<option value="ms">ms</option>
												<option value="miss">miss
												</option>
												</select><input name="name2" size="12"></td>
										  </tr>
										  <tr>

											 <td width="3%">
												3</td>

											 <td width="12%">

												<input name="id3" size="12"></td>

											 <td width="81%">

												<select size="1" name="title3">
												<option selected>
												</option>
												<option value="mr">mr</option>
												<option value="mrs">mrs</option>
												<option value="ms">ms</option>
												<option value="miss">miss
												</option>
												</select><input name="name3" size="12"></td>
										  </tr>
										  </table> </td>
								  </tr>
								</table>

<p><input type="submit" value="submit"><input type="reset" value="clear form"> </p>
</form>
</body>

</html>

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Question by:bootneck2222
2 Comments
 
LVL 17

Accepted Solution

by:
Kiran Sonawane earned 2000 total points
ID: 36708246
check this

<html>

<head>
<meta http-equiv="Content-Language" content="en-gb">
<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
<title>Employee ID</title>
  <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.6.4/jquery.min.js" type="text/javascript"></script>
<script type="text/javascript" src="jquery.validate.min.js"></script>
<script>
$(document).ready(function(){
        $("#registerForm").validate({
        rules: {
               id1: "required",
               name1: "required",
               title1: "required",
               title2: {
        required: function(element) {
          var flag = false;
          if($("#name2").val() != "")
           {
             if($("#title2").val()=="")
             flag = true;
           } 
           return flag;
              }
          }, 
               title3: {
        required: function(element) {
       var flag = false;
          if($("#name3").val() != "")
           {
             if($("#title3").val()=="")
             flag = true;
           } 
           return flag;
              }
                     
                       }
}
});
});
</script>
<style type="text/css">
<!--
  label
{
    display: block;
    color: #FF0000;
    font-style: bold;
}
    -->
</style>
</head>

<body>
<form method="POST" id="registerForm" action="employee_id1.php">
                <table border="1" cellspacing="1"
                 cellpadding="5" width="100%">
                  <tr>
                   <td>
                    <table width="100%" cellspacing="5">
                      <tr>

                       <td width="3%">
                        &nbsp;</td>

                       <td width="12%">
                        employee id</td>

                       <td width="81%">
                        name</td>
                      </tr>
                      <tr>

                       <td width="3%">
                        1</td>

                       <td width="12%">

                        <input name="id1" id="id1" size="12"></td>

                       <td width="81%">

                        <select size="1"  id="title1" value="" name="title1">
                        <option selected>
                        </option>
                        <option value="mr">mr</option>
                        <option value="mrs">mrs</option>
                        <option value="ms">ms</option>
                        <option value="miss">miss
                        </option>
                        </select><input name="name1"  size="12" id="name1"></td>
                      </tr>
                      <tr>

                       <td width="3%">
                        2</td>

                       <td width="12%">

                        <input name="id2" size="12"  id="id2"></td>

                       <td width="81%">

                        <select size="1" name="title2" id="title2">
                        <option selected>
                        </option>
                        <option value="mr">mr</option>
                        <option value="mrs">mrs</option>
                        <option value="ms">ms</option>
                        <option value="miss">miss
                        </option>
                        </select><input name="name2" size="12"  id="name2"></td>
                      </tr>
                      <tr>

                       <td width="3%">
                        3</td>

                       <td width="12%">

                        <input name="id3" size="12" id="id3"></td>

                       <td width="81%">

                        <select size="1" name="title3"  id="title3">
                        <option selected>
                        </option>
                        <option value="mr">mr</option>
                        <option value="mrs">mrs</option>
                        <option value="ms">ms</option>
                        <option value="miss">miss
                        </option>
                        </select><input name="name3" size="12" id="name3"></td>
                      </tr>
                      </table> </td>
                  </tr>
                </table>

<p><input type="submit" value="submit"><input type="reset" value="clear form"> </p>
</form>
</body>

</html>

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Author Closing Comment

by:bootneck2222
ID: 36708408
Excellent. Thank you for the quick response.
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