How to populate radio button through jquery


A radio buttons group, with a name=”sex”....

 <input type="radio" name="sex" value="Male">Male</input>
<input type="radio" name="sex" value="Female">Female</input>
<input type="radio" name="sex" value="Unknown">Unknown</input>
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1. To display the selected radio button value.

 $('input:radio[name=sex]:checked').val();
---------------------------------------------------------------------------------------------
2. To select a radio button (Male).
The radio button is 0-based, so the ‘Male’ = ’0′, ‘Female’ = ’1′ and ‘Unknown’ = ’2′.

 $('input:radio[name=sex]:nth(0)').attr('checked',true);
                            OR
$('input:radio[name=sex]')[0].checked = true;

 ---------------------------------------------------------------------------------------------
3. To select a radio button (Female).

 $('input:radio[name=sex]:nth(1)').attr('checked',true);
                            OR
$('input:radio[name=sex]')[1].checked = true;
---------------------------------------------------------------------------------------------
4. To select a radio button (Unknown).

 $('input:radio[name=sex]:nth(2)').attr('checked',true);
                            OR
$('input:radio[name=sex]')[2].checked = true;
---------------------------------------------------------------------------------------------
5. To reset the selected radio button.

 $('input:radio[name=sex]').attr('checked',false);
---------------------------------------------------------------------------------------------
jQuery select a radio button example As Follows

 <html>
<head>
<title>jQuery select a radio button example</title> 
<script type="text/javascript" src="http://code.jquery.com/jquery-1.3.2.min.js"></script> 
</head> 
<body> 
<h1>jQuery select a radio button example</h1> 
<script type="text/javascript"> 
  $(document).ready(function(){ 
    $("#isSelect").click(function () { 
alert($('input:radio[name=sex]:checked').val()); 
    });

    $("#selectMale").click(function () { 
$('input:radio[name=sex]:nth(0)').attr('checked',true);
    });

    $("#selectFemale").click(function () { 
$('input:radio[name=sex]:nth(1)').attr('checked',true);
    });

    $("#selectUnknown").click(function () { 
$('input:radio[name=sex]:nth(2)').attr('checked',true); 
    });

    $("#reset").click(function () { 
$('input:radio[name=sex]').attr('checked',false); 
    }); 
  });
</script>
</head><body> 
<input type="radio" name="sex" value="Male">Male</input>
<input type="radio" name="sex" value="Female">Female</input>
<input type="radio" name="sex" value="Unknown">Unknown</input> 
<br/>
<br/>
<br/> 
<input type='button' value='Display Selected' id='isSelect'>
<input type='button' value='Select Male' id='selectMale'>
<input type='button' value='Select Female' id='selectFemale'>
<input type='button' value='Select Unknown' id='selectUnknown'>
<input type='button' value='Reset' id='reset'> 
</body>
</html>

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