var countriesArray = $.map(countries, function (value, key) { return { value: value, data: key }; });// Setup jQuery ajax mock:$.mockjax({    url: '*',    responseTime: 2000,    response: function (settings) {        var query = settings.data.query,            queryLowerCase = query.toLowerCase(),            re = new RegExp('\\b' + $.Autocomplete.utils.escapeRegExChars(queryLowerCase), 'gi'),            suggestions = $.grep(countriesArray, function (country) {                 // return country.value.toLowerCase().indexOf(queryLowerCase) === 0;                return re.test(country.value);            }),            response = {                query: query,                suggestions: suggestions            };        this.responseText = JSON.stringify(response);    }});$('#country').autocomplete({    lookup: countriesArray,    minChars: 1,    onSelect: function (suggestion) {        $('#selection-country').html('You selected: ' + suggestion.value);    },    showNoSuggestionNotice: true,    noSuggestionNotice: 'Sorry, no matching results',    groupBy: 'category'});