当服务器端验证失败时,AJAX将错误返回到屏幕并尝试使用grecaptcha.reset()重置recaptcha.

重置recaptcha似乎工作正常,客户能够重新调用“我不是一个机器人”框并继续,但重新重新调用后,页面上的滚动操作导致大量的TypeError：a是recaptcha_en.js中的null javascript错误.

TypeError: a is null
https://www.gstatic.com/recaptcha/api2/r20151104115408/recaptcha__en.js
Line 50

代码(简化)：

var recaptcha1;
var onRecaptchaLoad = function () {
    recaptcha1 = grecaptcha.render('gRecaptcha',{
        'sitekey': 'my site key','callback': CaptchaResponse
    });
};

$.ajax({
type: "POST",url: "SaveDetails",contentType: "application/json; charset=utf-8",dataType: "json",data: data,cache: false,success: function (result) {
    if (result != null) {
        if (result.d.Success) {
            //success
        }else{             
            grecaptcha.reset(recaptcha1);
        }
     }
}
});