asked on

jQuery: Select option with selected attribute

Using jQuery, how can I determine the value for a select that has the attribute "selected"?

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta charset="utf-8" />
<title>Demo</title>

<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7/jquery.min.js"></script>
<script type="text/javascript">

$(document).ready(function() {
 $('select').each(function() {
  $(this).val($(this).find('option:eq('+ Math.floor((Math.random()*4)) +')').val());
 });


 $('select').each(function() {
  alert('The selected value is ' + $(this).val() + '\n' + 'The item with the selected="selected" attribute is ???');
 });

});

</script>
</head>
<body>
 <div>
  <select>
   <option value="1">1</option>
   <option value="2">2</option>
   <option value="3" selected="selected">3</option>
   <option value="4">4</option>
   <option value="5">5</option>
  </select>

  <select>
   <option value="A">A</option>
   <option value="B">B</option>
   <option value="C" selected="selected">C</option>
   <option value="D">D</option>
   <option value="E">E</option>
  </select>

 </div>
</body>
</html>

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Scott Fell

$(document).ready(function() {
$('select').change(function(){
  myValue=$(this,'option:selected').val();
  alert(myValue);
 }); 
});

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http://jsbin.com/UYOBALI/1/edit

Scott Fell

$('select').each(function(){
if ($(this).has('[selected]')){
alert($(this).val());
}
});

Pierre Cornelius

This should give you what you are after (let me know if you need more info).
$('select option:selected')

e.g.

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta charset="utf-8" />
<title>Demo</title>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7/jquery.min.js"></script>
</head>
<body>
 <div>
  <select>
   <option value="1">1</option>
   <option value="2">2</option>
   <option value="3" selected="selected">3</option>
   <option value="4">4</option>
   <option value="5">5</option>
  </select>

  <select>
   <option value="A">A</option>
   <option value="B">B</option>
   <option value="C" selected="selected">C</option>
   <option value="D">D</option>
   <option value="E">E</option>
  </select> 

 </div>
	<script type="text/javascript">
	 $('select').on('change', function (e){				
				alert('selected: '+$(e.target).find("option:selected").val());
			}
		);
	</script>
</body>
</html>

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hankknight

ASKER

Thank you, but none of you ideas work.

They are returning the value that is CURRENTLY selected, not the value that has the HTML attribute selected="selected".

Scott Fell

Please see my second post http:Q_28278790.html#a39605335 with working sample http://jsbin.com/UYOBALI/3/edit

hankknight

ASKER

No, padas, your code DOES NOT meet my requirement. Test it with the code I originally posted and you will see the problem.

Your code returns the value CURRENTLY SELECTED but I want the value that has the attribute selected="selected" from the HTML.

SOLUTION

Scott Fell

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Pierre Cornelius

I think I understand what you mean.

Try this:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta charset="utf-8" />
<title>Demo</title>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7/jquery.min.js"></script>
</head>
<body>
 <div>
  <select>
   <option value="1">1</option>
   <option value="2">2</option>
   <option value="3" selected="selected">3</option>
   <option value="4">4</option>
   <option value="5">5</option>
  </select>

  <select>
   <option value="A">A</option>
   <option value="B">B</option>
   <option value="C" selected="selected">C</option>
   <option value="D">D</option>
   <option value="E">E</option>
  </select>
  
<input type="button" value="What is selected?" id="btnShowSelected" onclick="SelectPerHTML()">    

 </div>
	<script type="text/javascript">
	 	
	function SelectPerHTML(){
		$('select option').each(function(i){
					if (this.outerHTML.indexOf('selected')>0) alert('outerHTML: '+this.outerHTML+'\ninnerHTML:'+this.innerHTML);
				}
			)
	}
	</script>
</body>
</html>

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hankknight

ASKER

PierreC, yes, you understand what I want. But how can I integrate your solution with my code?

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta charset="utf-8" />
<title>Demo</title>

<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7/jquery.min.js"></script>
<script type="text/javascript">

$(document).ready(function() {

 $('select').each(function() {
  $(this).val($(this).find('option:eq(0)').val());
 });

 $('select').each(function() {
  alert('The selected value is ' + $(this).val() + '\n' + 'The item with the selected="selected" attribute is ' + $(this).find('option').outerHTML.indexOf('selected')>0 );

 });

});


</script>
</head>
<body>
 <div>

  <select>
   <option value="A">A</option>
   <option value="B">B</option>
   <option value="XYZ" selected="selected">XYZ</option>
   <option value="D">D</option>
   <option value="E">E</option>
  </select>

 </div>
</body>
</html>

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Pierre Cornelius

like this:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta charset="utf-8" />
<title>Demo</title>

<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7/jquery.min.js"></script>
<script type="text/javascript">

function alertSelection () {
	
	function SelectedPerHTML() {
		var s=-1;
		$('select option').each(function(i){
					if (this.outerHTML.indexOf('selected')>0) {s=this.innerHTML; return false;};
				}
			);
		return s;
	};	
	
	function SelectedOption() {return $('select option:selected').val();};
		
	alert('The selected value is ' + SelectedOption() + '\n' + 'The item with the selected="selected" attribute is ' + SelectedPerHTML());
	
}	
$(document).ready(function() {	alertSelection();});
</script>
</head>
<body>
 <div>

  <select>
   <option value="A">A</option>
   <option value="B">B</option>
   <option value="XYZ" selected="selected">XYZ</option>
   <option value="D">D</option>
   <option value="E">E</option>
  </select>
  
  <input type="button" onclick="alertSelection()" value="Alert selection info"/>

 </div>
</body>
</html>

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ASKER CERTIFIED SOLUTION

Pierre Cornelius

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