/** 
 * Created by lgy on 2017/10/21. 
 * 图片验证码 
 */ 
(function ($) { 
 $.fn.imgcode = function (options) { 
 //初始化参数 
 var defaults = { 
  callback:"" //回调函数 
 }; 
 var opts = $.extend(defaults, options); 
 return this.each(function () { 
  var $this = $(this);//获取当前对象 
  var html = '<div class="code-k-div">' + 
  '<div class="code_bg"></div>' + 
  '<div class="code-con">' + 
  '<div class="code-img">' + 
  '<div class="code-img-con">' + 
  '<div class="code-mask"><img src="/UploadFiles/2021-04-02/front(1).png">

css部分：


.code_bg{ 
 position: fixed; 
 top:0; 
 left: 0; 
 right:0; 
 bottom:0; 
 background-color: rgba(0,0,0,.5); 
 z-index: 99; 
} 
.icon-login-bg{ 
 background-image: url(../img/icon/loginicon.png); 
 background-repeat: no-repeat; 
} 
.code-con{ 
 position: absolute; 
 top:100px; 
 width: 320px; 
 left: 50%; 
 margin-left: -160px; 
 background-color: #fff; 
 z-index: 100; 
 -moz-user-select: none; 
 -webkit-user-select: none; 
} 
.code-img{ 
 margin: 5px 5px; 
 padding: 5px 5px; 
 background-color: #f5f6f7; 
} 
.code-img img{ 
 display: block; 
} 
.icon-w-25{ 
 display: inline-block; 
 width: 25px; 
 height: 25px; 
 text-indent: -9999px; 
} 
.icon-push{ 
 cursor: pointer; 
 background-position: -149px -95px; 
} 
.code-push{ 
 height: 25px; 
} 
.code-btn{ 
 position: relative; 
 height: 30px; 
 text-align: center; 
 color: #999; 
 margin: 10px 10px; 
 box-sizing: border-box; 
 background-color: #f5f6f7; 
 border-radius: 15px; 
 border: 1px solid #e1e1e1; 
} 
.code-btn-m{ 
 position: absolute; 
 width: 40px; 
 height: 40px; 
 border-radius: 50%; 
 background-color: #f5f6f7; 
 border: 1px solid #e1e1e1; 
 z-index: 5; 
 top:-8px; 
 left: 10px; 
 box-shadow: 0 0 3px #ccc; 
 cursor: pointer; 
 background-position: -63px 10px; 
} 
.code-btn-img{ 
 background-image:url(../img/icon/codejt.png); 
 background-repeat: no-repeat; 
} 
.code-btn-img.active{ 
 background-position: -134px 10px; 
} 
.code-btn-img.error{ 
 background-position: 8px 10px; 
} 
.code-img-con{ 
 position: relative; 
} 
.code-mask{ 
 position: absolute; 
 top:0; 
 left: 0; 
 z-index: 10; 
} 
.code-tip{ 
 padding-left: 10px; 
 font-size: 12px; 
 color: #999; 
} 
.code-tip-red{ 
 color: red; 
} 
.code-tip-green{ 
 color: green; 
} 



html部分：


<div id="imgscode"></div> 
<script> 
$("#imgscode").imgcode(); 
</script> 



效果图：

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。