javascript - 如何从具有相同名称的元素组中获取选定的值？

Question

<分区>

Answer 1

你可以只使用 :checked 选择器和 val(): 像这样:

var directed = $('input[name=directed]:checked').val();

$('button').click(function() {
    var directed = $('input[name=directed]:checked').val();
    alert(directed);
})

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<label>
    <span><input type="radio" name="directed" value="1" id="directed_yes"></span>
    <span>Yes</span>
</label>
<br>
<label>
    <span><input type="radio" name="directed" value="0" id="directed_no"></span>
    <span>No</span>
</label>

<br /><br />
<button>Get value</button>