simpleLocalization.js

  var termDictionay = {"first":'text goes here'};

var localization = (function(terms) {
    var _terms = terms;
    

    var retVal = {
        stampValues : function (template, replacements) {
            /// <summary>Replaes tokens in a template string</summary>
            /// <param name="template">string that is to have values replaced in</param>            
            /// <param name="replacements" optional="true"> Values to be replaced in a string template. In json formate {term:value}</param>
            /// <returns>string with all changes made to it.</returns>            
            for (var tag in replacements) {
                var reg = new RegExp('\{' + tag + '\}', 'g');
                template = template.replace(reg, replacements[tag]);
            }
            return template;
        }, 
        getString : function(key, replacemetns) {
            /// <summary>Gets a localized string value.</summary>
            /// <param name="key">Key of the value to retrieve.</param>            
            /// <param name="replacements" optional="true"> Values to be replaced in a string template.</param>
            /// <returns>Value if found; otherwise empty string.</returns>            
            var value = '';
    
            // Verify data store exists.
            if (_terms) {
                value = _terms[key];
            }
    
            // Default to key if not found.
            if (!value || value.length === 0) {
                value = key;                
            }
            if (replacements) {
                value = instance.stampValues(value, replacements);
            }
            return value;
        }
    }
    return retVal;
};)(termDictionay)

String.prototype.stampValues = function (replacements) {
    return localization.stampValues(this, replacements);
};