Utils class, that need to be saved

Utils.js

'use strict';

/* globals window, jQuery */
(function ($) {

    window.Utils = {
        getOptionsFromDom: function (pluginName, element) {
            element = $(element);
            var pn = pluginName.toLowerCase(),
                pnRe = new RegExp('^' + pn),
                data = $(element).data() || {},
                options = {},
                _this = this,
                optionsList = [pn, pn + 'Options'];
            // check data-pluginname and data-pluginname-options
            $.each(optionsList, function (i, name) {
                if (data.hasOwnProperty(name)) {
                    $.extend(true, options, _this._parseJSON(data[name]));
                }
            });
            // check other data-pluginname-attributeXXX
            $.each(data, function (i, obj) {
                if (optionsList.indexOf(i) === -1) {
                    // set options[fooBar] = data[FooBar]; (transform FooBar into fooBar)
                    obj = _this._parseObject(obj);
                    if (obj !== '' && typeof(obj) !== 'undefined') {
                        options[_this._firstLetterLowerCase(i.replace(pnRe, ''))] = obj;
                    }
                }
            });
            return options;
        },

        _firstLetterLowerCase: function (a) {
            return a.toLowerCase();
        },

        _parseObject: function (obj) {
            return typeof obj === 'string' && /^\{.*\}$/.test($.trim(obj)) ? this._parseJSON(obj) : obj;
        },

        _parseJSON: function (str) {
            try {
                return (new Function('return ' + str))(); //jshint ignore:line
            } catch (e) {
                console.log(e);
                return {};
            }
        },

        substitute: function (string, object, regexp) {
            return string.replace(regexp || (/\\?\{([^{}]+)\}/g), function (match, name) {
                if (match.charAt(0) === '\\') {
                    return match.slice(1);
                }
                name = name.split('.');
                var tmpObj = object;
                while (name.length) {
                    tmpObj = tmpObj[name.splice(0, 1)[0]];
                }
                return (tmpObj !== null) ? (tmpObj || '') : '';
            });
        },

        getPositionInViewPort: function (elOrSelector) {
            var el = $(elOrSelector);
            var offset = el.offset();
            var $window = $(window);
            var posX = offset.left - $window.scrollLeft();
            var posY = offset.top - $window.scrollTop();
            return {
                left: posX,
                top: posY,
                height: el.outerHeight(),
                width: el.outerWidth()
            };
        },

        addSuffix: function (obj, suffix) {
            for (var name in obj) {
                if (obj.hasOwnProperty(name)) {
                    obj[name] = obj[name] + suffix;
                }
            }
            return obj;
        }
    };
})(jQuery);