whats wrong with my jquery radio button?
hello i am new to jquery can any one please tell me what's wrong with my code
开发者_高级运维 <html>
<head>
<title>jQuery Hello World</title>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
</head>
<script type="text/javascript">
$("input[@name='chkBox']").click(function(){
if ($("#chkBox"]:checked").val() == 'a')
// Code for handling value 'a'
{
$("#msgid").html("This is Hello World by JQuery");
}
});
</script>
<body>
<input type="radio" name="chkBox" id="chkBox" value="a" />
<div id="msgid">
</div>
</body>
You have quite a few things wrong in the script.
- Wrap the checkbox click function within a
$(document).ready( function() { } )as otherwise it will not be able to see the checkbox being added to the DOM later. - Please check the error console of your web browser to catch other errors.
Fixed script:
<html>
<head>
<title>jQuery Hello World</title>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(
function() {
$("#chkBox").click(
function() {
if ($("#chkBox:checked").val() == 'a') {
// Code for handling value 'a'
$("#msgid").html("This is Hello World by JQuery");
}
}
);
}
);
</script>
</head>
<body>
<input type="radio" name="chkBox" id="chkBox" value="a" />
<div id="msgid">
</div>
</body>
</html>
not just putting it in an onload or domready, there's errors in your syntax and jquery selectors too. see the working fixed version below:
<!doctype html>
<html>
<head>
<title>jQuery Hello World</title>
</head>
<body>
<input type="radio" name="chkBox" id="chkBox" value="a" />
<div id="msgid">
</div>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
<script type="text/javascript">
$(function() { //on dom ready
$('input[name=chkBox]').click(function(){ //syntax corrected
if ($('#chkBox:checked').val() == 'a') { //syntax corrected, selector corrected
$('#msgid').html("This is Hello World by JQuery");
}
});
});
</script>
</body>
</html>
加载中,请稍侯......
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