openproject/app/assets/javascripts/danger_zone_validation.js

//-- copyright
// OpenProject is a project management system.
// Copyright (C) 2012-2015 the OpenProject Foundation (OPF)
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License version 3.
//
// OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
// Copyright (C) 2006-2013 Jean-Philippe Lang
// Copyright (C) 2010-2013 the ChiliProject Team
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
//
// See doc/COPYRIGHT.rdoc for more details.
//++

(function($) {
    $(function() {
        // This will only work iff there is a single danger zone on the page
        var dangerZoneVerification = $('.danger-zone--verification');
        var expectedValue = $('.danger-zone--expected-value').text();

        dangerZoneVerification.find('input').on('input', function(){
            var actualValue = dangerZoneVerification.find('input').val();
            if (expectedValue === actualValue) {
                dangerZoneVerification.find('button').prop('disabled', false);
            } else {
                dangerZoneVerification.find('button').prop('disabled', true);
            }
        });
    });
}(jQuery));