路径参数替换

        function updateQueryStringParameter(uri, key, value) {
            var re = new RegExp("([?&])" + key + "=.*?(&|$)", "i");
            var separator = uri.indexOf(‘?‘) !== -1 ? "&" : "?";
            if (uri.match(re)) {
                return uri.replace(re, ‘$1‘ + key + "=" + value + ‘$2‘);
            }
            else {
                return uri + separator + key + "=" + value;
            }
        }