如何操作 - 选项卡库

了解如何使用 CSS 和 JavaScript 创建选项卡式图片库。

标签库

单击图片将其展开：

自然

雪

山脉

北极光

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创建选项卡库

步骤1）添加HTML：

示例

<div class="row">
<div class="column">
    <img src="img_nature.jpg" alt="Nature" onclick="myFunction(this);">
</div>
<div class="column">
    <img src="img_snow.jpg" alt="Snow" onclick="myFunction(this);">
</div>
<div class="column">
    <img src="img_mountains.jpg" alt="Mountains" onclick="myFunction(this);">
</div>
<div class="column">
    <img src="img_lights.jpg" alt="Lights" onclick="myFunction(this);">
</div>
</div>


<div class="container">

<span onclick="this.parentElement.style.display='none'" class="closebtn">×</span>


<img id="expandedImg" style="width:100%">


<div id="imgtext"></div>
</div>

使用图片来扩展特定图片。在列内单击的图片显示在列下方的容器中。

步骤2）添加CSS：

创建四列并设置图片样式：

示例

/* The grid: Four equal columns that floats next to each other */
.column {
float: left;
width: 25%;
padding: 10px;
}

/* Style the images inside the grid */
.column img {
opacity: 0.8;
  cursor: pointer;
}

.column img:hover {
  opacity: 1;
}

/* Clear floats after the columns */
.row:after {
  content: "";
  display: table;
  clear: both;
}

/* The expanding image container (positioning is needed to position the close button and the text) */
.container {
position: relative;
display: none;
}

/* Expanding image text */
#imgtext {
position: absolute;
bottom: 15px;
  left: 15px;
  color: white;
  font-size: 20px;
}

/* Closable button inside the image */
.closebtn {
position: absolute;
top: 10px;
right: 15px;
  color: white;
  font-size: 35px;
  cursor: pointer;
}

步骤 3) 添加 JavaScript：

示例

function myFunction(imgs) {
// Get the expanded image
var expandImg = document.getElementById("expandedImg");
// Get the image text
var imgText = document.getElementById("imgtext");
// Use the same src in the expanded image as the image being clicked on from the grid
expandImg.src = imgs.src;
// Use the value of the alt attribute of the clickable image as text inside the expanded image
imgText.innerHTML = imgs.alt;
// Show the container element (hidden with CSS)
expandImg.parentElement.style.display = "block";
}

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