JS 对象，数组去重

var obj = ['110', '120', '110', '114', '115', '115'];

        var arr = [

            { date: '2016-05-01', name: '王小虎', address: '上海市普陀区金沙江路 1518 弄' },

            { date: '2016-05-02', name: '里斯', address: '上海市普陀区金沙江路142弄' },

            { date: '2016-05-02', name: '里斯', address: '上海市普陀区金沙江路142弄' },

            { date: '2016-05-01', name: '王小虎', address: '上海市普陀区金沙江路 1518 弄' },

            { date: '2016-05-04', name: '王小虎', address: '上海市普陀区金沙江路 1517 弄' },

            { date: '2016-05-01', name: '王小虎', address: '上海市普陀区金沙江路 1519 弄' },

            { date: '2016-05-03', name: '王小虎', address: '上海市普陀区金沙江路 1516 弄' }

        ]

        function removalObj(obj) {

            var unique = {};

            obj.forEach(function (item) {

                unique[JSON.stringify(item)] = item;

            });

            return Object.values(unique);

        }

        console.log(removalObj(obj));

        console.log(removalObj(arr));