数组去重

                        //数组去重
                        function arrayOnly(array) {
                            var tmp = new Array();

                            for (var m in array) {
                                tmp[array[m]] = 1;
                            }
                            //再把键和值的位置再次调换
                            var tmparr = [];

                            for (var n in tmp) {
                                tmparr.push(n);
                            }
                            return tmparr;
                        }