jQuery 查找具有类名的单选按钮的值

Question

我正在尝试提取具有特定类名称的 radio 的“data-val”。

我需要它来:查找具有“正确”类的单选组中元素的数据值

我一辈子都想不出该怎么做。有什么想法吗？

HTML

<fieldset>
    <input type='radio' name='rads1' id='x1' data-val='23' class='correct'/>
    <label for='x1'>#1</label><br/>
    <input type='radio' name='rads1' id='x2' data-val='46' class='incorrect'/>
    <label for='x2'>#2</label><br/>
    <input type='radio' name='rads1' id='x3' data-val='16' class='incorrect'/>
    <label for='x3'>#3</label><br/>
    <input type='radio' name='rads1' id='x4' data-val='52' class='incorrect'/>
    <label for='x4'>#4</label><br/>
</fieldset><br/>
<fieldset>
    <input type='radio' name='rads2' id='y1' data-val='3' class='incorrect'/>
    <label for='y1'>#1</label><br/>
    <input type='radio' name='rads2' id='y2' data-val='6' class='incorrect'/>
    <label for='y2'>#2</label><br/>
    <input type='radio' name='rads2' id='y3' data-val='36' class='correct'/>
    <label for='y3'>#3</label><br/>
    <input type='radio' name='rads2' id='y4' data-val='12' class='incorrect'/>
    <label for='y4'>#4</label><br/>
</fieldset>

Answer 1

尝试使用 .data() 方法:

$('input[type=radio][name=rads1].correct').data('val');
// Or [name=rads2] depending on which one you want...

JSBin Demo