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Jquery获取radio选中的值

<!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>
  <title> new document </title>
  <meta http-equiv="Content-Type" content="text/html;charset=UTF-8" />
  <link rel="stylesheet" type="text/css" href="" />
  <style type="text/css"></style>
  <script type="text/javascript" src="jquery-3.0.0.js"></script>
 </head>

 <body>
  <input type="radio" name="radio" value="1" />1<br/>
  <input type="radio" name="radio" value="2" />2<br/>
  <input type="radio" name="radio" value="3" />3<br/>
  <input type="radio" name="radio" value="4" />
  <script type="text/javascript">
    var a = $("input[name=‘radio‘]:checked").val();
    alert("选中的radio的值是:" + a);
</script>
 </body>
</html>

 

Jquery获取radio选中的值