jQuery中的val()示例应用

1、实例源码

<!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 http-equiv="Content-Type" content="text/html; charset=utf-8" /> 
<title>jQuery中的val()</title> 
<script type="text/javascript" src="jquery-2.1.0.js"></script> 
<script type="text/javascript"> 
$(function(){ 
$("#btn").click(function(){ 
$("input[name=ckb]:checked").each(function() { 
alert($(this).val()); 
}); 
}); 

}); 
</script> 
</head> 

<body> 
<div id="div1"> 
<table> 
<tr> 
<td> 
<input type="checkbox" id="ckb1" name="ckb" value="篮球"/>篮球 
<input type="checkbox" id="ckb2" name="ckb" value="足球"/>足球 
<input type="checkbox" id="ckb3" name="ckb" value="排球"/>排球 
</td> 
</tr> 
<tr> 
<td> 
<input type="button" id="btn" value="取值"/> 
</td> 
</tr> 
</table> 
</div> 
</body> 
</html> 