Question

嗨，这是下面的代码，我尝试了很多东西，但我无法获得所选单选按钮的价值。你可以看到我需要为不同的情况获得该值。

  <div style="display: inline-block">
        <div>
                <a href="/Login/LogOut">Log Out</a><span> Welcome </span>YS User 1 noName        </div>
        <br />
        <br />
        <br />
        <br />
        <input type="button" onclick="submitCreate();" value="New Survey" /><br />
        <input type="button" onclick="submitEdit();" value="Edit Survey" /><br />
        <input type="button" onclick="submitDelete();" value="Delete Survey" /><br />
        <input type="button" onclick="submitPreview();" value="Preview Survey" />
    </div>
    <div style="display: inline-block">
<div>
    <table class="MyTable"><thead><tr class="columnHead"><th scope="col"></th><th scope="col"><a href="/User/Index?sort=UserID&amp;sortdir=ASC">CreatedBy</a></th><th scope="col"><a href="/User/Index?sort=CreatedDate&amp;sortdir=ASC">Created Date</a></th><th scope="col"><a href="/User/Index?sort=IsRunning&amp;sortdir=ASC">Is Running</a></th></tr></thead><tbody><tr><td> <input name="selected" id="1" 

      type="radio" value="1" /></td><td>1</td><td>12/12/2011 3:43:57 PM</td><td>False</td></tr><tr class="altRow"><td> <input name="selected" id="2" 

      type="radio" value="2" /></td><td>1</td><td>12/13/2011 4:42:37 PM</td><td>False</td></tr><tr><td> <input name="selected" id="3" 

      type="radio" value="3" /></td><td>1</td><td>12/13/2011 6:27:38 PM</td><td>False</td></tr></tbody></table>
</div>
    </div>
</body>
</html>
<script type="text/javascript">
    //   var value = $$('input[name=selected]:checked')[0].get('value');
//    var selectFoo;
//    $$('input[name=selected]').each(function (el) {
//        if (el.checked == true) {
//            selectFoo = el.value;
//        }
//    });

    function getCheckedValue(radioObj) {
        if (!radioObj)
            return "";
        var radioLength = radioObj.length;
        if (radioLength == undefined)
            if (radioObj.checked)
                return radioObj.value;
            else
                return "";
        for (var i = 0; i < radioLength; i++) {
            if (radioObj[i].checked) {
                return radioObj[i].value;
            }
        }
        return "";
    };

    function submitCreate() {
        var adress = "/User/CreateSurvey/";
        document.location = adress;
    };

    function submitEdit() {
        var adress = "/Den/Index/" + getCheckedValue('selected');
        document.location = adress;
    };

    function submitDelete() {
        var adress = "/User/DeleteSurvey/" + getCheckedValue('selected');
        document.location = adress;
    };

    function submitPreview() {
        var adress = "/User/PreviewSurvey/" + getCheckedValue('selected');
        document.location = adress;
    }; 
</script>

Answer 1

您可以使用document.getElementsByName (<button_name>)或document.getElementsByTagName ("input")来获取输入元素数组。循环遍历这些元素以检查哪个是checked。

以下是如何从一组名为＆＃34;选择＆＃34;

的单选按钮获取已选中按钮的值的示例

<html>
    <head>
        <script type="text/javascript">
          function get_radio_value() {
            var inputs = document.getElementsByName("selected");
            for (var i = 0; i < inputs.length; i++) {
              if (inputs[i].checked) {
                return inputs[i].value;
              }
            }
          }

          function onSubmit() {
            var id = get_radio_value();
            alert("selected input is: " + id);
          }
        </script>
    </head>
    <body>
        <form onsubmit="onSubmit();">
            <input name="selected" value="1" type="radio"/>1<br/>
            <input name="selected" value="2" type="radio"/>2<br/>
            <input name="selected" value="3" type="radio"/>3<br/>
            <input type="submit" value="submit"/>
        </form>
    </body>
</html>

Answer 2

我选择了所需功能的代码数量。下面是api.jquery.com给我的工作。希望这有助于其他人。

HTML

select ID,Name
from some table a
where cast(a.[appointment date] as date) > cast(GETDATE() - 5 as date)
group by id,name
or having count(id) > 2

的JavaScript

<input type="radio" name="option" value="o1">option1</input>
<input type="radio" name="option" value="o2">option2</input>

变量selectedOption将包含所选单选按钮的值（即）o1或o2

在行动的情况下获得单选按钮的选定值

2 个答案: