图片弹框

用js实现图片弹框的特效。

效果展示
在这里插入图片描述

代码展示

html内容

<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><title></title></head><body><img id="myImg" src="img/c_7.jpg" alt="文本内容" width="300" height="200"><div class="modal" id="myModal"><span class="close" οnclick="document.getElementById('myModal').style.display='none'">&times;</span><img class="modal-content" id="img"><div id="text"></div>
</div>
</body></html>

css内容

#myImg{border-radius: 5px;cursor:pointer;transition:0.3s;}#myImg:hover{opacity:0.7;}.modal{display:none;   position: fixed;z-index: 1;padding-top:100px;left:0;top: 0;width:100%;height: 100%;overflow: auto;background-color: rgba(0,0,0,0.9);}/* 图片*/.modal-content{margin: auto;display: block;width:80%;max-width: 700px;}/* 文本内容*/#text{margin: auto;display: block;width:80%;max-width: 700px;text-align:center;color:#ccc;padding:10px 0;height: 150px;}.modal-content, #text { -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;}@media only screen and (max-width: 700px){.modal-content {width: 100%;}}

js内容

var modal = document.getElementById('myModal');var img = document.getElementById('myImg');var modalImg = document.getElementById("img");var captionText = document.getElementById("text");img.onclick = function(){modal.style.display = "block";modalImg.src = this.src;captionText.innerHTML = this.alt;}var span = document.getElementsByClassName("close")[0];span.onclick = function() { modal.style.display = "none";}