javascript - 显示每个元素的关闭按钮并使用 JavaScript 隐藏当前元素

Question

我有一个 <ul>列出一些 <input>字段，我需要显示 <span class="delete-link">将鼠标悬停在实际字段上。

当用户点击 X关闭按钮，隐藏当前<li>列表中的元素。

我正在尝试使用 vanilla JavaScript 执行此操作，但我被困在了这一点上。无论我将鼠标悬停在哪个字段中，我的代码都只显示第一个关闭按钮。

HTML

<ul class="social-links-list">
  <li class="social-link">
    <input type="text" name="" id="" placeholder="http://facebook.com/id">
    <span class="delete-link" onclick=''>X</span>
  </li>
    <li class="social-link">
    <input type="text" name="" id="" placeholder="http://facebook.com/id">
    <span class="delete-link">X</span>
  </li>
    <li class="social-link">
    <input type="text" name="" id="" placeholder="http://facebook.com/id">
    <span class="delete-link">X</span>
  </li>
</ul>

CSS

ul {
  list-style: none;
}

input[type='text'] {
  height: 1rem;
  padding: 0.5rem;
  margin-bottom: 1rem;
  border-radius: 3px;
  border: 1px solid #ccc;
}

.delete-link {
  color: red;
  opacity: 0;
  cursor: pointer;
}

JS

var socialField = document.querySelectorAll('.social-link');

socialField.forEach(function(el) {
    el.addEventListener('mouseover', function(){
        closeBtn.style.opacity = 1;
    });
      el.addEventListener('mouseout', function(){
        closeBtn.style.opacity = 0;
    });
    var closeBtn = document.querySelector('.social-link .delete-link');

    for (i = 0; i < closeBtn.length; i++) {
      closeBtn[i].addEventListener("click", function() {
        this.parentElement.style.display = 'none';
      });
    }
});

检查这个JSFiddle .

Answer 1

就在那里。

---

只需将您的 .delete-link 元素存储在一个变量 (closeBtn) 中以便更易于管理，并向其添加一个 click 事件监听器:

var socialField = document.querySelectorAll('.social-link');

socialField.forEach(function(el) {
  var closeBtn = el.querySelector('.delete-link');
  
  el.addEventListener('mouseover', function() {    
    closeBtn.style.opacity = 1;
  });

  el.addEventListener('mouseout', function() {
    closeBtn.style.opacity = 0;
  });
  
  closeBtn.addEventListener('click', function() {
    closeBtn.parentElement.style.display = 'none';
  });
});

ul {
  list-style: none;
}

input[type='text'] {
  height: 1rem;
  padding: 0.5rem;
  margin-bottom: 1rem;
  border-radius: 3px;
  border: 1px solid #ccc;
}

.delete-link {
  color: red;
  opacity: 0;
  cursor: pointer;
}

<ul class="social-links-list">
  <li class="social-link">
    <input type="text" name="" id="" placeholder="http://facebook.com/id-1">
    <span class="delete-link">X</span>
  </li>
  <li class="social-link">
    <input type="text" name="" id="" placeholder="http://facebook.com/id-2">
    <span class="delete-link">X</span>
  </li>
  <li class="social-link">
    <input type="text" name="" id="" placeholder="http://facebook.com/id-3">
    <span class="delete-link">X</span>
  </li>
</ul>

我更改了您输入字段的占位符，以便清楚地表明修改了正确的元素。