单选按钮检查vanilla js时显示div

时间:2016-01-31 17:03:00

标签: javascript forms radio-button

这里有点挣扎。我的eventlistener只检测"已检查"改变我的单选按钮,而不是"未选中"更改。注意:只有纯javascript(vanillajs),没有jQuery。

一个小JSFiddle来解释我的问题:https://jsfiddle.net/kLuba37w/1/

<label class="checkbox checkbox--block">
    <input type="radio" name="radio" class="" data-show-more data-target="showmoretarget2" value="1"> <span></span> This is the first radio
</label>
<label class="checkbox checkbox--block">
    <input type="radio" name="radio" class="" value="2"> <span></span> This is the second radio
</label>

<div class="js-show-more" data-hook="showmoretarget2">
    <h2 class="h2"> Some more content</h2>
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Blanditiis ipsum repellendus, officia dolores consectetur. Error at officiis sequi iure earum.</p>
</div>

JS:

(function() {
 "use strict";

  var elements = document.querySelectorAll('[data-show-more]');

  [].forEach.call(elements, function(element) {

      element.addEventListener('change', function(e) {
        e.preventDefault();

        var target = document.querySelectorAll('[data-hook="' + this.getAttribute('data-target') + '"]')[0];
        alert("change detected");


  }, false);

  });

 })();

1 个答案:

答案 0 :(得分:1)

这样做的简单方法是使用名称收音机

监听已检查事件的所有单选按钮
(function() {
  "use strict";

    document.querySelector("#radio1").addEventListener("change", function() {
        alert("checked radio 1");
    });

    document.querySelector("#radio2").addEventListener("change", function() {
        alert("checked radio 2");
    });

})();