JavaScript 图片弹窗（ JavaScript 弹窗）

JavaScript 图片弹窗（ JavaScript 弹窗）

本文我们为大家介绍如何使用 JavaScript 与 CSS 来创建图片弹窗。

图片素材：HTML 代码：<!-- 触发弹窗 - 图片改为你的图片地址 --><img id="myImg" src="img.jpg" alt="文本描述信息" width="300" height="200"> <!-- 弹窗 --><div id="myModal" class="modal"> <!-- 关闭按钮 --> <span class="close" onclick="document.getElementById('myModal').style.display='none'">&times;</span> <!-- 弹窗内容 --> <img class="modal-content" id="img01"> <!-- 文本描述 --> <div id="caption"></div></div>CSS 代码：/* 触发弹窗图片的样式 */#myImg { border-radius: 5px; cursor: pointer; transition: 0.3s;} #myImg:hover {opacity: 0.7;} /* 弹窗背景 */.modal { display: none; /* Hidden by default */ position: fixed; /* Stay in place */ z-index: 1; /* Sit on top */ padding-top: 100px; /* Location of the box */ left: 0; top: 0; width: 100%; /* Full width */ height: 100%; /* Full height */ overflow: auto; /* Enable scroll if needed */ background-color: rgb(0,0,0); /* Fallback color */ background-color: rgba(0,0,0,0.9); /* Black w/ opacity */} /* 图片 */.modal-content { margin: auto; display: block; width: 80%; max-width: 700px;} /* 文本内容 */#caption { margin: auto; display: block; width: 80%; max-width: 700px; text-align: center; color: #ccc; padding: 10px 0; height: 150px;} /* 添加动画 */.modal-content, #caption { -webkit-animation-name: zoom; -webkit-animation-duration: 0.6s; animation-name: zoom; animation-duration: 0.6s;} @-webkit-keyframes zoom { from {-webkit-transform:scale(0)} to {-webkit-transform:scale(1)}} @keyframes zoom { from {transform:scale(0)} to {transform:scale(1)}} /* 关闭按钮 */.close { position: absolute; top: 15px; right: 35px; color: #f1f1f1; font-size: 40px; font-weight: bold; transition: 0.3s;} .close:hover,.close:focus { color: #bbb; text-decoration: none; cursor: pointer;} /* 小屏幕中图片宽度为 100% */@media only screen and (max-width: 700px){ .modal-content { width: 100%; }}JavaScript 代码：// 获取弹窗var modal = document.getElementById('myModal'); // 获取图片插入到弹窗 - 使用 "alt" 属性作为文本部分的内容var img = document.getElementById('myImg');var modalImg = document.getElementById("img01");var captionText = document.getElementById("caption");img.onclick = function(){ modal.style.display = "block"; modalImg.src = this.src; captionText.innerHTML = this.alt;} // 获取 <span> 元素，设置关闭按钮var span = document.getElementsByClassName("close")[0]; // 当点击 (x), 关闭弹窗span.onclick = function() { modal.style.display = "none";}在线演示