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jQuery操作radio、checkbox、select示例

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html> <head>  <title> jQuery操作radio、checkbox、select示例 </title>  <meta name="Generator" content="EditPlus">  <meta name="Author" content="">  <meta name="Keywords" content="">  <meta name="Description" content="">  <script src="http://code.jquery.com/jquery-1.11.1.min.js" ></script> </head> <body>  <div>                <input type="radio" name="radio" id="radio1" value="radio1" />radio1                    <input type="radio" name="radio" id="radio2" value="radio2" />radio2                    <input type="radio" name="radio" id="radio3" value="radio3" />radio3                    <input type="radio" name="radio" id="radio4" value="radio4" />radio4                                    <br/>                                 <input type="checkbox" name="checkbox" id="checkbox_id1" value="checkbox1" />checkbox1                    <input type="checkbox" name="checkbox" id="checkbox_id2" value="checkbox2" />checkbox2                    <input type="checkbox" name="checkbox" id="checkbox_id3" value="checkbox3" />checkbox3                    <input type="checkbox" name="checkbox" id="checkbox_id4" value="checkbox4" />checkbox4                    <input type="checkbox" name="checkbox" id="checkbox_id5" value="checkbox5" />checkbox5                                     <br/>                                 <select name="select" id="select_id" style="width: 100px;">                        <option value="select1">select1</option>                        <option value="select2">select2</option>                        <option value="select3">select3</option>                        <option value="select4">select4</option>                        <option value="select5">select5</option>                        <option value="select6">select6</option>                    </select>                                    <br/>                                 <span onclick="show()">点击</span>    </div>      <script>                 function show()            {                 //jquery获取单选框的值                alert($(input[type="radio"][name="radio"]:checked).val());                             //jquery循环输出选中的值                $("input[type=checkbox][name=checkbox]:checked").each(function(){                     alert($(this).val());                    });                                 //jquery获取Select选中项的Value                    alert($("#select_id").val());                             //jquery获取Select选中项的Text                               alert($("#select_id :selected").text());                }         </script> </body></html>