I am trying to check radio. Neither the following works:
[edit]
$('selector').attr('checked','checked');
$('selector').attr('checked',true);
The two alert() in the following code show "1" and "a", respectively. My expectation is the second alert() showing "b".
Opera does check the second radio box in its browser, but its element inspector, dragonfly, shows that the DOM is not changed.
[end edit]
I had read the FAQ before I posted this question:
http://docs.jquery.com/Frequently_Asked_Questions#How_do_I_check.2Funcheck_a_checkbox_input_or_radio_button.3F
Helps will be much appreciated!
TIA
The xhtml page and code follows:
<!DOCTYPE html
PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title>Weird Behavior</title>
<script type="text/javascript" src="scripts/jquery.js"/>
<script type="text/javascript">
function clickme(){
alert($('input[name="myname"][value="b"]').length);
$('input[name="myname"][value="b"]').attr('checked','checked');
$('#b').attr('checked',true);
alert($('input[name="myname"][checked]').val());
};
</script>
</head>
<body>
<form action="">
<fieldset>
<legend>Why check is not switched?</legend>
<input type="radio" name="myname" value="a" id="a" checked="checked"/>A
<input type="radio" name="myname" value="b" id="b"/>B
</fieldset>
</form>
<p>
<button type="button" onclick="clickme()">click me</button>
</p>
</body>
</html>
See Question&Answers more detail:
os 与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…