JS制作图形验证码实现代码

    /**     供货商店铺－店铺简介     */     //1-在路由层进行设置，页面跳转到根目录下/buyer/vshop/info.ejs页面进行跳转，然后在回调函数中进行接口的调用      router.get('/buyer/vshop/info', function(req, res, next) {      //2-调用接口获取数据         async.parallel({         verifycode :function(fn){        //3-调用接口获取本机的IP地址          var args= {            userIp: tools.getClientIp(req)          };          //4-调用接口verifyCodeHelper的createVcode方法获取captcha与 csnonce的数据，他们的值都是腾讯接口verifyCodeHelper返回的数据          verifyCodeHelper.createVcode(args, function(err, result){            if (err) {              console.log(err);            }            else{              fn(null, {                captcha: result.data.queryUrl,                csnonce: result.csnonce || 0              })            }          });        }      },function(err, result){        if (err) {          res.end(err);        }else{          result.getDetail= res.shopInfo;          var fxzStatus = res.fxzStatus || {};        //5-进行根目录下buyer/vshop/describe页面的渲染，传递相关参数到EJS页面          res.render("buyer/vshop/describe", {              title: srcBizType==1 ? result.getDetail.name : "店铺简介",            pageName:"vshopInfo",            captcha:result.verifycode.captcha,//验证码            isTencent: 1,            csnonce:result.verifycode.csnonce          });        }      });    });

  <%- include ../../header %>   //1-获取路由传递的 csnonce  <script>    APP.newLogin= {      csnonce: '<%- csnonce %>',    };  <link href="/css/vshop/describe.css?v=<%= config.version %>" rel="stylesheet" />  <style id="dynamic"></style>  <div class="arrow_mask"></div>  <div class="arrow">    <div>      <img src="/imgs/vshop/verification-code-back.png" class="verification-code-back" />    </div>    <ul class="arrow-mess"> <span class="sku-close" id="btn_sku_dialog_close"> </span>      <li>请输入下面的图形验证码</li>      <li>          <img id="J_BtnVerifyPicCodeTencent" src="" class="captcha" style="height:30px;margin:0 15px;" />      </li>      <li>        <div class="btn_mes">          <input class="btn_mes_text" type="text" maxlength="6">        </div>      </li>    </ul>    <div class="btn_mes2">      <input type="button" class="license-submit" value="提交">    </div>  </div>  <div data-role="container" class="body <%= pageName %>">    <header data-role="header">      <%- include ./widget_vshop %>    </header>    <section data-role="body" class="section-body">      <div class="div-section div-section-info">        <ul class="info1">          <li class="gap"><div class="left">所在地</div><div class="right"><%- detail.address%></div></li>          <li><div class="left">开店时间</div><div class="right"><%- detail.createTime%></div></li>        </ul>        <ul class="info2">          <li class="gap"><div class="left">发货速度</div><div class="right"><%- detail.score.express%></div></li>          <li class="gap"><div class="left">服务态度</div><div class="right"><%- detail.score.service%></div></li>          <li><div class="left">描述相符</div><div class="right"><%- detail.score.describe%></div></li>        </ul>        <ul class="info3">          <%if(detail.shopTypeIndex==1||detail.shopTypeIndex==2||detail.shopTypeIndex==3){var bg = '/imgs/vshop/tip.png',color='#39dda5' }else{var bg = '/imgs/vshop/tip3.png',color='#59aaff'}%>          <li><div class="left anotherC">认证</div><div class="right textR"><span style="background: url(<%-bg%>) left 1px no-repeat;background-size: 14px 12px;"><i style="background: <%-color%>"><%- detail.shopType %></i></span></div></li>        </ul>        <ul class="info4">          <li><a href="tel:<%- detail.phone%>" class="tel">服务电话</a></li>          <li><a data-aid="<%- aid%>" class="webim">在线客服</a></li>          <li class="business-license">            <!--<a href="/buyer/vshop/license?aid=<%- aid%>">-->            <a href="#">              <span >营业执照</span>              <label>查看<span></span></label>            </a>          </li>        </ul>      </div>      <%- include ./footer %>      <div id="vue_hooker">        <child-nav></child-nav>        <%- include ../../widget_navBtns %>      </div>     </section>  </div>  //2-获取路由传递的captcha  <script type="text/javascript" src="<%= captcha %>"></script>  //3-引入相关ＪＳ文件  <script>    seajs.use("js_cmd/vshop/home-cmd");  </script>  <%- include ../../footer %>

 /**   这是一个公用文件，vshop首页&vshop全部商品共用   */  //1-引入页面所需的各个模块  define(function (require, exports, module) {    var $ = require("./top-suction-cmd"),      myDialog = require("lib_cmd/myDialog-cmd"),      main = require("js_cmd/main-cmd"),      DataLoader = require("./tool-cmd"),      fxzTool = require("./fxzTool-cmd"),      Vue = require("lib_cmd/vue-cmd"),      widget_navBtns = require("js_cmd/navBtns-cmd"),      $eles = {},      eles = {};   //2-Vue实例化     var vm = new Vue({      data: {},      methods: {}    });  //3- 页面初始化函数    function initPage() {      vm.$mount('#vue_hooker');      window.scroll(0,0);    }  //4- 验证码相关处理函数    function license(){      $('.info4 .business-license').click(function (ev) { //弹层        $('.btn_mes_text').val("");        $('.arrow_mask').show();        $('.arrow').show();        $('#nav_omit').remove();      });      $('#btn_sku_dialog_close').click(function(ev){//弹窗        $('.arrow_mask').hide();        $('.arrow').hide();        $('.btn_mes_text').val("");      });      $('.btn_mes_text').focus(function(){ //输入框获得焦点        $('.btn_mes_text').val("");        if($('.verification-code').length!=0){          $('.verification-code').remove();        }      });      $('.license-submit').click(function(){        APP.verifyPicCode();      });    }    //5- 验证码初始化函数（） TSOCapObj是腾讯接口里面的方法    function verify_initPage(){      $('#J_BtnVerifyPicCodeTencent').on('click', function () {        TSOCapObj.refresh();      });      //初始化，参数传入显示验证码的元素imgid      TSOCapObj.init("J_BtnVerifyPicCodeTencent");      //刷新拉取验证码图片      TSOCapObj.refresh();      APP.verifyPicCode= function(fn) {        //获取用户输入        var ans = $(".btn_mes_text").val();        //验证答案，验证完成后会回调第二个参数传入的函数        TSOCapObj.verify(ans , function(ret_json){          if (ret_json.errorCode!=0) {            $(".btn_mes_text").val("");            TSOCapObj.refresh();            //tip("图形验证码输入错误！");            if($('.verification-code').length==0){              $('.btn_mes').eq(0).append(" <div class='verification-code'>请输入正确的验证码</div>");            }            $('.btn_mes_text').blur(function(){              $('.btn_mes_text').text("");            });          } else {            window.location="/buyer/vshop/license?aid=" + APP.aid;            fn(ret_json.ticket);          }        });      }    }     //6- 页面初始化函数的执行    $(function () {      initPage();      license();      verify_initPage();    });  });

  @import url(common.css);  .div-section-info .info4{padding: 0}  .div-section-info .info4 li{    padding: 11px 14px;    line-height: 20px;    border-bottom: 1px solid #e6e6e6;  }  .div-section-info .info4 li a{    color: #333;    display: block;  }  .div-section-info .info4 li a.tel{    background: url(/imgs/vshop/callAndMsg.png) no-repeat;      background-size: 20px 60px;     background-position: right 0;  }  .div-section-info .info4 li a.webim{    background: url(/imgs/vshop/callAndMsg.png) no-repeat;      background-size: 20px 60px;    background-position: right -30px;  }  .div-section-info .info4 li a label{     display: block;    float: right;  }  .div-section-info .info4 li a label span{     display: block;    width: 12px;    height: 12px;    border-right:1px solid #666;    border-bottom:1px solid #666;    -webkit-transform:rotate(-45deg);    float: right;    margin-top: 4px;  }  .arrow_mask {    position: fixed;    top: 0;    left: 0;    bottom: 0;    right: 0;    z-index: 101;    display: none;    background: black;    opacity: 0.7;  }  .arrow{    width: 250px;    height: 226px;    background-color: #FFFFFF;    position: fixed;    top: 50%;    left: 50%;    z-index: 102;    -webkit-transform: translate(-50%, -50%);    -moz-transform: translate(-50%, -50%);    -ms-transform: translate(-50%, -50%);    -o-transform: translate(-50%, -50%);    transform: translate(-50%, -50%);    border-radius: 10px;    display: none;  }  .arrow-mess li:nth-of-type(1){    text-align: center;    margin-bottom: 8px;    font-size: 14px;    color: #333333;  }  .arrow-mess li:nth-of-type(2){    text-align: center;    margin-bottom: 10px;  }  .arrow-mess li:nth-of-type(3) input{    width: 100%;    height: 30px;    border: 1px solid #979797;    text-align: center;    border-radius: 3px;    font-family: PingFangSC-Regular;    font-size: 16px;    color: #333333;    letter-spacing: 0px;  }  .btn_mes{    margin-bottom: 15px;    width: 100%;    padding-left: 48px;    padding-right: 48px;    position: relative;  }  .btn_mes2{    width: 100%;    padding-left: 70px;    padding-right: 70px;    /* position: relative; */    position: absolute;    bottom: 0px;    margin-bottom: 10px;  }  .license-submit{    width: 100%;    height: 44px;    background: #FF534C;    border: 1px solid #FF534C;    font-size: 14px;    border-radius: 4px;    color: #FFFFFF;  }  .sku-close {    background: url(/imgs/vshop/verification-code-del.png) no-repeat right;    -webkit-background-size: 25px auto;    display: inline-block;    width: 26px;    height: 26px;    position: absolute;    right: 0px;    top: 0px;    margin-right: -13px;    margin-top: -13px;  }  .verification-code{    z-index: 102;    color: #FFAA00;    position: absolute;    font-size: 12px;    top: 4px;  }  .verification-code-back{    width: 100%;    position: absolute;    height: 46px;  }  .arrow div:nth-of-type(1){    position: relative;  }  .arrow-mess{    margin-top: 52px;  }