Html点击实现图片预览和查看原图

原创朱雀 2021-05-21 10:06 122509阅读 7赞

最近博客有个需求，需要在文章页面，点击文章内的图片放大，再次点击缩小。写完之后特别分享一下。
源代码：
````
<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8"/>
    <meta name="viewport"
          content="width=device-width,initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no"/>
    <title>蒲公英云</title>
</head>

<body>
    <style type="text/css">
        .imgViewDom {
            display: none;
        }
        .disnone{
            background: rgba(255, 255, 255, 0.8);
            position: fixed;
            top: 0;
            left: 0;
            height: 100%;
            width: 100%;
            z-index: 99999999;
            overflow: auto;
            display: -webkit-box;
            -webkit-box-align: center;
            -webkit-box-pack: center;
            display: -moz-box;
            -moz-box-align: center;
            -moz-box-pack: center;
            display: -o-box;
            -o-box-align: center;
            -o-box-pack: center;
            display: -ms-box;
            -ms-box-align: center;
            -ms-box-pack: center;
            display: box;
            box-align: center;
            box-pack: center;
        }
    </style>
    <script>

$(document).ready(function () {
            $(".imgViewDom2 img").click(function () {
                let imageSrc = $(this).attr("src");
                let jQuery = $('.imgViewDom').attr("src");
                console.log(imageSrc);
                if (jQuery==null){
                    $(".imgViewDom img").attr("src",imageSrc);
                    $(".imgViewDom").attr("class","imgViewDom disnone");
                } else {
                    $(".imgViewDom").attr("class","imgViewDom");
                }

});
            $(".imgViewDom img").click(function () {
                $(".imgViewDom").attr("class","imgViewDom");
            });

});
    </script>
    <div class="imgViewDom" style="">
        <img src="">
    </div>
    <div class="imgViewDom2">
        <img src="https://dandelioncloud.cn/images/20210510/1620613628986.png">
    </div>
</body>
</html>
````
效果演示我们依旧使用站内的：https://dandelioncloud.cn/tool/codedemo
然后将代码考入进去点击调试预览
![](/images/20210521/1621591450631.png)
![](/images/20210521/1621591505253.png)
![](/images/20210521/1621591515022.png)
点击图片预览，再点击返回。完成。