如何移除悬停状态

Question

1) 我创建了一个不透明度为 1 的图像。当您将鼠标悬停在它上面时，不透明度变为 0.3，并且图像上方会出现一个按钮。问题是，当您将鼠标悬停在按钮上时，图像的不透明度返回 1。当鼠标悬停在图像或按钮上时，如何使图像的不透明度保持 0.3？

2) 当您点击播放时，原图变为新图。但由于鼠标悬停在图像上，新图像的不透明度为 0.3。即使悬停，如何将新图像设置为不透明度为 1？

var originalImgSrc = $('img').attr('src');

// Change image on button click
$(".the-buttons").click(function() {

  $('img').attr("src", "https://s3.amazonaws.com/blitzbase-assets/assets/2.gif");
  $(this).addClass("hide");
});

//Restore image on mouse out
$('.show-image img').mouseout(function() {
  $('img').attr("src", originalImgSrc);
  $('.the-buttons').removeClass("hide");
});

div.show-image {
  position: relative;
  float: left;
  margin: 0px;
  padding: 0px;
  background: #333;
}

div.show-image img {
  opacity: 1;
  background: white;
}

div.show-image img:hover {
  opacity: .3;
  -webkit-transition: opacity .2s ease-in-out;
}

div.show-image:hover input {
  display: block;
}

div.show-image input {
  position: absolute;
  display: none;
  top: 100px;
  left: 100px;
}

div.show-image input.hide {
  display: none;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="show-image">
  <img src="https://via.placeholder.com/100.png/09f/fff" />
  <input class="the-buttons" type="button" value="Play" />
</div>

Answer 1

Here's a fiddle

以下是您两个问题的答案。

1. 将鼠标悬停在父级上：

   .show-image:hover img

2. 在父级上添加“隐藏”类并以这种方式更改不透明度。

   $(this).parent().addClass("hide");

   div.show-image.hide img{ 不透明度：1； }

3. 要在第一次单击后将播放按钮重新添加到悬停状态，您必须在鼠标移出功能中从父级中删除隐藏类：

   $('.the-buttons').parent().removeClass("hide");

Answer 2

改变你的CSS 从此：

div.show-image img:hover {
     opacity: .3;
    -webkit-transition: opacity .2s ease-in-out;
}

到这里：

div.show-image:hover img {
     opacity: .3;
    -webkit-transition: opacity .2s ease-in-out;
}

希望这会有所帮助。完整的sn-p：

var originalImgSrc = $('img').attr('src');

// Change image on button click
$(".the-buttons").click(function() {

  $('img').attr("src", "https://s3.amazonaws.com/blitzbase-assets/assets/2.gif");
  $(this).addClass("hide");
});

//Restore image on mouse out
$('.show-image img').mouseout(function() {
  $('img').attr("src", originalImgSrc);
  $('.the-buttons').removeClass("hide");
});

div.show-image {
  position: relative;
  float: left;
  margin: 0px;
  padding: 0px;
  background: #333;
}

div.show-image img {
  opacity: 1;
  background: white;
}

div.show-image:hover img {
  opacity: .3;
  -webkit-transition: opacity .2s ease-in-out;
}

div.show-image:hover input {
  display: block;
}

div.show-image input {
  position: absolute;
  display: none;
  top: 100px;
  left: 100px;
}

div.show-image input.hide {
  display: none;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="show-image">
  <img src="https://via.placeholder.com/100.png/09f/fff" />
  <input class="the-buttons" type="button" value="Play" />
</div>

Answer 3

我从 CSS 中删除了您的不透明度，并将其放在您的 jQuery 函数中。我还用 .hover() 替换了您的事件处理程序，并以父容器为目标。

$('.show-image').hover(
  function() {
    $(this)
      .find('img').css('opacity', '.3').end()
      .find('input').show();
  }, function() {
    $(this)
      .find('img').css('opacity', '1').attr("src", originalImgSrc).end()
      .find('input').hide();
  }
);

---

var originalImgSrc = $('img').attr('src');

// Change image on button click
$(".the-buttons").click(function() {

  $('img').attr("src", "https://s3.amazonaws.com/blitzbase-assets/assets/2.gif").css('opacity', 1);
  $(this).hide();
});

$('.show-image').hover(
  function() {
    $(this)
      .find('img').css('opacity', '.3').end()
      .find('input').show();
  },
  function() {
    $(this)
      .find('img').css('opacity', '1').attr("src", originalImgSrc).end()
      .find('input').hide();
  }
);

div.show-image {
  position: relative;
  float: left;
  margin: 0px;
  padding: 0px;
  background: #333;
}

div.show-image img {
  background: white;
}

div.show-image:hover input {
  display: block;
}

div.show-image input {
  position: absolute;
  display: none;
  top: 100px;
  left: 100px;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="show-image">
  <img src="https://via.placeholder.com/100.png/09f/fff" />
  <input class="the-buttons" type="button" value="Play" />
</div>

---

另外，请注意我为在单击“播放”时恢复不透明度所做的更新。

Answer 4

您可以使用mouseover/mouseout 事件来添加/删除类并将css添加到该类，我添加了.hovered类。

var originalImgSrc = $('img').attr('src');

// Change image on button click
$(".the-buttons").click(function() {

  $('img').attr("src", "https://s3.amazonaws.com/blitzbase-assets/assets/2.gif");
  $(this).addClass("hide");
});

function addHOVER() {
  $('.show-image img').addClass("hovered");
}

function remHOVER() {
  $('.show-image img').removeClass("hovered");
}

$(".show-image img").mouseover(addHOVER);
$(".show-image .the-buttons").mouseover(addHOVER);
$(".show-image .the-buttons").mouseout(remHOVER);
//Restore image on mouse out
$('.show-image img').mouseout(function() {
  $('img').attr("src", originalImgSrc);
  remHOVER();
  $('.the-buttons').removeClass("hide");
});

div.show-image {
  position: relative;
  float: left;
  margin: 0px;
  padding: 0px;
  background: #333;
}

div.show-image img {
  opacity: 1;
  background: white;
}

div.show-image img.hovered {
  opacity: .3;
  -webkit-transition: opacity .2s ease-in-out;
}

div.show-image:hover input {
  display: block;
}

div.show-image input {
  position: absolute;
  display: none;
  top: 100px;
  left: 100px;
}

div.show-image input.hide {
  display: none;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="show-image">
  <img src="https://via.placeholder.com/100.png/09f/fff" />
  <input class="the-buttons" type="button" value="Play" />
</div>