function matcher (params, data) { // Always return the object if there is nothing to compare if ($.trim(params.term) === '') { return data; } // Do a recursive check for options with children if (data.children && data.children.length > 0) { // Clone the data object if there are children // This is required as we modify the object to remove any non-matches var match = $.extend(true, {}, data); // Check each child of the option for (var c = data.children.length - 1; c >= 0; c--) { var child = data.children[c]; var matches = matcher(params, child); // If there wasn't a match, remove the object in the array if (matches == null) { match.children.splice(c, 1); } } // If any children matched, return the new object if (match.children.length > 0) { return match; } // If there were no matching children, check just the plain object return matcher(params, match); } var original = stripDiacritics(data.text).toUpperCase(); var term = stripDiacritics(params.term).toUpperCase(); // Check if the text contains the term if (original.indexOf(term) > -1) { return data; } // If it doesn't contain the term, don't return anything return null; }