Contact Enhanced Math Captcha

Contact Enhanced Math Captcha

jQuery(document).ready(function($){
    var mathenticate = {
        bounds: {
            lower: 5,
            upper: 50
        },
        first: 0,
        second: 0,
        generate: function () {
            this.first = Math.floor(Math.random() * this.bounds.lower) + 1;
            this.second = Math.floor(Math.random() * this.bounds.upper) + 1;
        },
        show: function () {
            return this.first + ' + ' + this.second;
        },
        solve: function () {
            return this.first + this.second;
        }
    };
    mathenticate.generate();
    var $auth = $('<input type="text" name="auth" />');
    $auth.attr('placeholder', mathenticate.show())
        .insertAfter('textarea[name="message"]');

    $('form[name="emailForm"]').on('submit', function (e) {
        
        if ($auth.val() != mathenticate.solve()) {
			e.preventDefault();
            alert('wrong answer!');
        }
    });

});