给定一个单选按钮数组,我要如何获取它们的值(包括null)?例如给定:
// use jquery to display [Yes, null, null, No]
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<p>
true <input type="radio" name="one" value="Yes" checked>
false <input type="radio" name="one" value="No">
</p>
<p>
true <input type="radio" name="two" value="Yes">
false <input type="radio" name="two" value="No">
</p>
<p>
true <input type="radio" name="three" value="Yes" >
false <input type="radio" name="three" value="No" >
</p>
<p>
true <input type="radio" name="four" value="Yes">
false <input type="radio" name="four" value="No" checked >
</p>
我该如何获得[是,空,空,否]?