Calculation/app/public/js/captcha.js

/**
 * 验证码相关js
 *
 * @author CaiAoLin
 * @date 2017/10/13
 * @version
 */
$(document).ready(function() {

    // 载入时先获取相关参数
    $.ajax({
        url: '/captcha',
        type: 'get',
        data: '',
        timeout: 5000,
        error: function() {
            $("#captcha-box").html('验证码加载失败');
        },
        beforeSend: function() {
            $("#captcha-box").html('正在加载验证码');
        },
        success: function(response) {
            $("#captcha-box").html('');
            if (response.success === 0) {
                alert('验证码初始化失败!');
                return false;
            }

            initGeetest({
                // 以下配置参数来自服务端 SDK
                gt: response.gt,
                challenge: response.challenge,
                offline: !response.success,
                new_captcha: response.new_captcha,
                width: '100%'
            }, function (captchaObj) {
                captchaObj.appendTo('#captcha-box');
                captchaObj.onSuccess(function () {
                    $(".btn-area").slideDown("fast");
                });
            })
        }
    });

});