html - Jquery Image on Hover制作输入类型文件

Question

当我将鼠标悬停在图像上时，图标会显示。但是我想这样显示图标

当我点击时，它应该允许浏览像这样的文件

<input type ='file'>

我该怎么做？

我试过将文件标签放在所有文件中，但没有用。我该怎么做？

.profile-img-container {
  position: absolute;
  width:50%;
}

.profile-img-container img:hover {
  opacity: 0.5;
  z-index: 501;
}

.profile-img-container img:hover + i {
  display: block;
  z-index: 500;
}

.profile-img-container i {
  display: none;
  position: absolute;
  margin-left:43%;
  margin-top:40%;
}

.profile-img-container img {
  position:absolute;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<link href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.1/css/bootstrap.min.css" rel="stylesheet" />
<link href="http://maxcdn.bootstrapcdn.com/font-awesome/4.2.0/css/font-awesome.min.css" rel="stylesheet" />
<script src="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.1/js/bootstrap.min.js"></script>

<div class="profile-img-container">
  <img src="http://s3.amazonaws.com/37assets/svn/765-default-avatar.png" class="img-thumbnail img-circle img-responsive" />
  <i class="fa fa-upload fa-5x"></i>
</div>

Fiddle

Answer 1

您需要在您的代码中添加一个input[type="file"] 并使其不可见。此外，它占据了所有 img 位置，将其 position 设置为 absolute 和所有其他样式，因此它占据了所有位置。

像这样:

.profile-img-container {
  position: absolute;
  /*width:50%;*/
  /*border-radius:50%;*/
  overflow:hidden;
}

.profile-img-container img:hover {
  opacity: 0.5;
  z-index: 501;
}

.profile-img-container img:hover + i {
  display: block;
  z-index: 500;
}

.profile-img-container .icon-wrapper {
  position: absolute;
  bottom:0;
  left:0;
  background:rgba(0,0,0,0.7);
  color:#fff;
  text-align:center;
  width:100%;
  padding:5px;
}

/*.profile-img-container img {
position:absolute;
}*/

/*.profile-img-container {
  position:relative;
}*/

input[type="file"] {
  opacity:0;
  position:absolute;
  top:0;
  left:0;
  width:100%;
  height:100%;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<link href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.1/css/bootstrap.min.css" rel="stylesheet" />
<link href="http://maxcdn.bootstrapcdn.com/font-awesome/4.2.0/css/font-awesome.min.css" rel="stylesheet" />
<script src="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.1/js/bootstrap.min.js"></script>

<div class="profile-img-container img-circle">
  <input type="file" />
  <img src="http://s3.amazonaws.com/37assets/svn/765-default-avatar.png" class="img-thumbnail img-circle img-responsive" />
  <div class="icon-wrapper">
    <i class="fa fa-upload fa-5x"></i>
  </div>
</div>