Example application of val of in jQuery

  • 2020-03-30 02:09:03
  • OfStack

1, example source 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 http-equiv="Content-Type" content="text/html; charset=utf-8" /> 
<title>jQuery In the 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=" basketball "/> basketball  
<input type="checkbox" id="ckb2" name="ckb" value=" football "/> football  
<input type="checkbox" id="ckb3" name="ckb" value=" volleyball "/> volleyball  
</td> 
</tr> 
<tr> 
<td> 
<input type="button" id="btn" value=" The values "/> 
</td> 
</tr> 
</table> 
</div> 
</body> 
</html> 

2. The results are as follows

(1) select all

"Basketball, football and volleyball"

(2) select part

The corresponding values pop up in turn

(3) not at all

Don't play window

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