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jQuery multiple select validation

Posted on 2009-04-06
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Last Modified: 2012-08-14
I have a e-commerce ticketing app that has multiple ticket types... each with a select drop down for quantity i.e. 0 - 10...  

How do I validate that someone has selected a quantity of 1 or greater for at least 1 of the select drop downs.


Example of the select field is below.
 
 
ADULT
	<select name="ticket[1].qty">
 
									  <option value="0">0</option>	
									  
									  <option value="1">1</option>
									  
									  <option value="2">2</option>
									  
									  <option value="3">3</option>
									  
									  <option value="4">4</option>
									  
									  <option value="5">5</option>
 
									  
									  <option value="6">6</option>
									  
									  <option value="7">7</option>
									  
									  <option value="8">8</option>
									  
									</select>
 
 
 
STUDENT
<select name="ticket[2].qty">
 
									  <option value="0">0</option>	
									  
									  <option value="1">1</option>
									  
									  <option value="2">2</option>
									  
									  <option value="3">3</option>
									  
									  <option value="4">4</option>
									  
									  <option value="5">5</option>
 
									  
									  <option value="6">6</option>
									  
									  <option value="7">7</option>
									  
									  <option value="8">8</option>
									  
									</select>

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Question by:polobruce
  • 2
2 Comments
 
LVL 16

Expert Comment

by:anoyes
ID: 24091655
A simple solution would be to grab the values of the two select boxes and make sure they're not both 0.  The example below assumes that you've got these two select elements inside a form and that you want to validate before the form gets submitted.

jQuery(function(($) {
 $('form').submit(function () {
  var a = $("select[name='ticket\[1\].qty']").val();
  var s = $("select[name='ticket\[2\].qty']").val();
  if (a == 0 && s == 0)
  {
    alert('Please order at least one ticket);
    return false;
  }
  return true;
 });
});

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LVL 16

Accepted Solution

by:
anoyes earned 1000 total points
ID: 24091661
Forgot a closing quote in there.  This should be the script:

jQuery(function(($) {
 $('form').submit(function () {
  var a = $("select[name='ticket\[1\].qty']").val();
  var s = $("select[name='ticket\[2\].qty']").val();
  if (a == 0 && s == 0)
  {
    alert('Please order at least one ticket');
    return false;
  }
  return true;
 });
});

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