javascript - 单选按钮内的输入字段不起作用

Question

我试图让单选按钮的输入字段 onclick 起作用，但它似乎不起作用。

我的 fiddle :https://jsfiddle.net/6qoe89j2/8/

$("#ddlMth").hide();
$("input[type='radio']").change(function() {

  if ($(this).val() == "delivery-yes") {
    $("#ddlMth").show();
  } else {
    $("#ddlMth").hide();
  }
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type="radio" name="radioFrequency" onclick="myMth()" id="radioFrequency-0" value="delivery-yes" /> Yes.
<input type="radio" name="radioFrequency" id="radioFrequency-0" /> No.
<div class="controls">
  <label id="ddlMth" name="ddlMth" class="car-list-step-label" for="country">Test</label>
  <input id="ddlMth" name="ddlMth" type="text" placeholder="e.g £50" class="form-control car-list-input">
</div>

Answer 1

多个元素不能有相同的 ID。我已经更改了标签和输入的 ID。

您不需要 jQuery，您可以使用 CSS。

见下面的片段:

.controls{
  display:none;
}

input[value="delivery-yes"]:checked ~ .controls {
    display: block;
}

<input type="radio" name="radioFrequency" id="radioFrequency-0" value="delivery-yes" /> Yes.
<input type="radio" name="radioFrequency" id="radioFrequency-0" /> No.
<div class="controls">
  <label id="ddlMthLabel" for="ddlMth" class="ddlMth car-list-step-label">Test</label>
  <input id="ddlMthInput" name="ddlMth" type="text" placeholder="e.g £50" class="ddlMth form-control car-list-input">
</div>